.

From ada3beb0a6c649bd9bfc6a87b2fe69ee8ae563f7 Mon Sep 17 00:00:00 2001 From: Andreas Baumann Date: Sat, 1 Feb 2020 08:57:06 +0100 Subject: initial checkin --- include/dblayer/common_db.php | 48 +++ include/dblayer/index.html | 1 + include/dblayer/mysql.php | 378 ++++++++++++++++++++++++ include/dblayer/mysql_innodb.php | 392 +++++++++++++++++++++++++ include/dblayer/mysqli.php | 385 ++++++++++++++++++++++++ include/dblayer/mysqli_innodb.php | 398 +++++++++++++++++++++++++ include/dblayer/pgsql.php | 442 ++++++++++++++++++++++++++++ include/dblayer/sqlite.php | 601 ++++++++++++++++++++++++++++++++++++++ 8 files changed, 2645 insertions(+) create mode 100644 include/dblayer/common_db.php create mode 100644 include/dblayer/index.html create mode 100644 include/dblayer/mysql.php create mode 100644 include/dblayer/mysql_innodb.php create mode 100644 include/dblayer/mysqli.php create mode 100644 include/dblayer/mysqli_innodb.php create mode 100644 include/dblayer/pgsql.php create mode 100644 include/dblayer/sqlite.php (limited to 'include/dblayer') diff --git a/include/dblayer/common_db.php b/include/dblayer/common_db.php new file mode 100644 index 0000000..5b9e67e --- /dev/null +++ b/include/dblayer/common_db.php @@ -0,0 +1,48 @@ +.. diff --git a/include/dblayer/mysql.php b/include/dblayer/mysql.php new file mode 100644 index 0000000..1b36648 --- /dev/null +++ b/include/dblayer/mysql.php @@ -0,0 +1,378 @@ + 'INT(10) UNSIGNED AUTO_INCREMENT' + ); + + + function __construct($db_host, $db_username, $db_password, $db_name, $db_prefix, $p_connect) + { + $this->prefix = $db_prefix; + + if ($p_connect) + $this->link_id = @mysql_pconnect($db_host, $db_username, $db_password); + else + $this->link_id = @mysql_connect($db_host, $db_username, $db_password); + + if ($this->link_id) + { + if (!@mysql_select_db($db_name, $this->link_id)) + error('Unable to select database. MySQL reported: '.mysql_error(), __FILE__, __LINE__); + } + else + error('Unable to connect to MySQL server. MySQL reported: '.mysql_error(), __FILE__, __LINE__); + + // Setup the client-server character set (UTF-8) + if (!defined('FORUM_NO_SET_NAMES')) + $this->set_names('utf8'); + + return $this->link_id; + } + + + function DBLayer($db_host, $db_username, $db_password, $db_name, $db_prefix, $p_connect) + { + $this->__construct($db_host, $db_username, $db_password, $db_name, $db_prefix, $p_connect); + } + + + function start_transaction() + { + return; + } + + + function end_transaction() + { + return; + } + + + function query($sql, $unbuffered = false) + { + if (defined('PUN_SHOW_QUERIES')) + $q_start = get_microtime(); + + if ($unbuffered) + $this->query_result = @mysql_unbuffered_query($sql, $this->link_id); + else + $this->query_result = @mysql_query($sql, $this->link_id); + + if ($this->query_result) + { + if (defined('PUN_SHOW_QUERIES')) + $this->saved_queries[] = array($sql, sprintf('%.5F', get_microtime() - $q_start)); + + ++$this->num_queries; + + return $this->query_result; + } + else + { + if (defined('PUN_SHOW_QUERIES')) + $this->saved_queries[] = array($sql, 0); + + $this->error_no = @mysql_errno($this->link_id); + $this->error_msg = @mysql_error($this->link_id); + + return false; + } + } + + + function result($query_id = 0, $row = 0, $col = 0) + { + return ($query_id) ? @mysql_result($query_id, $row, $col) : false; + } + + + function fetch_assoc($query_id = 0) + { + return ($query_id) ? @mysql_fetch_assoc($query_id) : false; + } + + + function fetch_row($query_id = 0) + { + return ($query_id) ? @mysql_fetch_row($query_id) : false; + } + + + function num_rows($query_id = 0) + { + return ($query_id) ? @mysql_num_rows($query_id) : false; + } + + + function affected_rows() + { + return ($this->link_id) ? @mysql_affected_rows($this->link_id) : false; + } + + + function insert_id() + { + return ($this->link_id) ? @mysql_insert_id($this->link_id) : false; + } + + + function get_num_queries() + { + return $this->num_queries; + } + + + function get_saved_queries() + { + return $this->saved_queries; + } + + + function free_result($query_id = false) + { + return ($query_id) ? @mysql_free_result($query_id) : false; + } + + + function escape($str) + { + if (is_array($str)) + return ''; + else if (function_exists('mysql_real_escape_string')) + return mysql_real_escape_string($str, $this->link_id); + else + return mysql_escape_string($str); + } + + + function error() + { + $result['error_sql'] = @current(@end($this->saved_queries)); + $result['error_no'] = $this->error_no; + $result['error_msg'] = $this->error_msg; + + return $result; + } + + + function close() + { + if ($this->link_id) + { + if (is_resource($this->query_result)) + @mysql_free_result($this->query_result); + + return @mysql_close($this->link_id); + } + else + return false; + } + + function get_names() + { + $result = $this->query('SHOW VARIABLES LIKE \'character_set_connection\''); + return $this->result($result, 0, 1); + } + + + function set_names($names) + { + return $this->query('SET NAMES \''.$this->escape($names).'\''); + } + + + function get_version() + { + $result = $this->query('SELECT VERSION()'); + + return array( + 'name' => 'MySQL Standard', + 'version' => preg_replace('%^([^-]+).*$%', '\\1', $this->result($result)) + ); + } + + + function table_exists($table_name, $no_prefix = false) + { + $result = $this->query('SHOW TABLES LIKE \''.($no_prefix ? '' : $this->prefix).$this->escape($table_name).'\''); + return $this->num_rows($result) > 0; + } + + + function field_exists($table_name, $field_name, $no_prefix = false) + { + $result = $this->query('SHOW COLUMNS FROM '.($no_prefix ? '' : $this->prefix).$table_name.' LIKE \''.$this->escape($field_name).'\''); + return $this->num_rows($result) > 0; + } + + + function index_exists($table_name, $index_name, $no_prefix = false) + { + $exists = false; + + $result = $this->query('SHOW INDEX FROM '.($no_prefix ? '' : $this->prefix).$table_name); + while ($cur_index = $this->fetch_assoc($result)) + { + if (strtolower($cur_index['Key_name']) == strtolower(($no_prefix ? '' : $this->prefix).$table_name.'_'.$index_name)) + { + $exists = true; + break; + } + } + + return $exists; + } + + + function create_table($table_name, $schema, $no_prefix = false) + { + if ($this->table_exists($table_name, $no_prefix)) + return true; + + $query = 'CREATE TABLE '.($no_prefix ? '' : $this->prefix).$table_name." (\n"; + + // Go through every schema element and add it to the query + foreach ($schema['FIELDS'] as $field_name => $field_data) + { + $field_data['datatype'] = preg_replace(array_keys($this->datatype_transformations), array_values($this->datatype_transformations), $field_data['datatype']); + + $query .= $field_name.' '.$field_data['datatype']; + + if (isset($field_data['collation'])) + $query .= 'CHARACTER SET utf8 COLLATE utf8_'.$field_data['collation']; + + if (!$field_data['allow_null']) + $query .= ' NOT NULL'; + + if (isset($field_data['default'])) + $query .= ' DEFAULT '.$field_data['default']; + + $query .= ",\n"; + } + + // If we have a primary key, add it + if (isset($schema['PRIMARY KEY'])) + $query .= 'PRIMARY KEY ('.implode(',', $schema['PRIMARY KEY']).'),'."\n"; + + // Add unique keys + if (isset($schema['UNIQUE KEYS'])) + { + foreach ($schema['UNIQUE KEYS'] as $key_name => $key_fields) + $query .= 'UNIQUE KEY '.($no_prefix ? '' : $this->prefix).$table_name.'_'.$key_name.'('.implode(',', $key_fields).'),'."\n"; + } + + // Add indexes + if (isset($schema['INDEXES'])) + { + foreach ($schema['INDEXES'] as $index_name => $index_fields) + $query .= 'KEY '.($no_prefix ? '' : $this->prefix).$table_name.'_'.$index_name.'('.implode(',', $index_fields).'),'."\n"; + } + + // We remove the last two characters (a newline and a comma) and add on the ending + $query = substr($query, 0, strlen($query) - 2)."\n".') ENGINE = '.(isset($schema['ENGINE']) ? $schema['ENGINE'] : 'MyISAM').' CHARACTER SET utf8'; + + return $this->query($query) ? true : false; + } + + + function drop_table($table_name, $no_prefix = false) + { + if (!$this->table_exists($table_name, $no_prefix)) + return true; + + return $this->query('DROP TABLE '.($no_prefix ? '' : $this->prefix).$table_name) ? true : false; + } + + + function rename_table($old_table, $new_table, $no_prefix = false) + { + // If the new table exists and the old one doesn't, then we're happy + if ($this->table_exists($new_table, $no_prefix) && !$this->table_exists($old_table, $no_prefix)) + return true; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$old_table.' RENAME TO '.($no_prefix ? '' : $this->prefix).$new_table) ? true : false; + } + + + function add_field($table_name, $field_name, $field_type, $allow_null, $default_value = null, $after_field = null, $no_prefix = false) + { + if ($this->field_exists($table_name, $field_name, $no_prefix)) + return true; + + $field_type = preg_replace(array_keys($this->datatype_transformations), array_values($this->datatype_transformations), $field_type); + + if (!is_null($default_value) && !is_int($default_value) && !is_float($default_value)) + $default_value = '\''.$this->escape($default_value).'\''; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' ADD '.$field_name.' '.$field_type.($allow_null ? '' : ' NOT NULL').(!is_null($default_value) ? ' DEFAULT '.$default_value : '').(!is_null($after_field) ? ' AFTER '.$after_field : '')) ? true : false; + } + + + function alter_field($table_name, $field_name, $field_type, $allow_null, $default_value = null, $after_field = null, $no_prefix = false) + { + if (!$this->field_exists($table_name, $field_name, $no_prefix)) + return true; + + $field_type = preg_replace(array_keys($this->datatype_transformations), array_values($this->datatype_transformations), $field_type); + + if (!is_null($default_value) && !is_int($default_value) && !is_float($default_value)) + $default_value = '\''.$this->escape($default_value).'\''; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' MODIFY '.$field_name.' '.$field_type.($allow_null ? '' : ' NOT NULL').(!is_null($default_value) ? ' DEFAULT '.$default_value : '').(!is_null($after_field) ? ' AFTER '.$after_field : '')) ? true : false; + } + + + function drop_field($table_name, $field_name, $no_prefix = false) + { + if (!$this->field_exists($table_name, $field_name, $no_prefix)) + return true; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' DROP '.$field_name) ? true : false; + } + + + function add_index($table_name, $index_name, $index_fields, $unique = false, $no_prefix = false) + { + if ($this->index_exists($table_name, $index_name, $no_prefix)) + return true; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' ADD '.($unique ? 'UNIQUE ' : '').'INDEX '.($no_prefix ? '' : $this->prefix).$table_name.'_'.$index_name.' ('.implode(',', $index_fields).')') ? true : false; + } + + + function drop_index($table_name, $index_name, $no_prefix = false) + { + if (!$this->index_exists($table_name, $index_name, $no_prefix)) + return true; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' DROP INDEX '.($no_prefix ? '' : $this->prefix).$table_name.'_'.$index_name) ? true : false; + } + + function truncate_table($table_name, $no_prefix = false) + { + return $this->query('TRUNCATE TABLE '.($no_prefix ? '' : $this->prefix).$table_name) ? true : false; + } +} diff --git a/include/dblayer/mysql_innodb.php b/include/dblayer/mysql_innodb.php new file mode 100644 index 0000000..d284f67 --- /dev/null +++ b/include/dblayer/mysql_innodb.php @@ -0,0 +1,392 @@ + 'INT(10) UNSIGNED AUTO_INCREMENT' + ); + + + function __construct($db_host, $db_username, $db_password, $db_name, $db_prefix, $p_connect) + { + $this->prefix = $db_prefix; + + if ($p_connect) + $this->link_id = @mysql_pconnect($db_host, $db_username, $db_password); + else + $this->link_id = @mysql_connect($db_host, $db_username, $db_password); + + if ($this->link_id) + { + if (!@mysql_select_db($db_name, $this->link_id)) + error('Unable to select database. MySQL reported: '.mysql_error(), __FILE__, __LINE__); + } + else + error('Unable to connect to MySQL server. MySQL reported: '.mysql_error(), __FILE__, __LINE__); + + // Setup the client-server character set (UTF-8) + if (!defined('FORUM_NO_SET_NAMES')) + $this->set_names('utf8'); + + return $this->link_id; + } + + + function DBLayer($db_host, $db_username, $db_password, $db_name, $db_prefix, $p_connect) + { + $this->__construct($db_host, $db_username, $db_password, $db_name, $db_prefix, $p_connect); + } + + + function start_transaction() + { + ++$this->in_transaction; + + mysql_query('START TRANSACTION', $this->link_id); + return; + } + + + function end_transaction() + { + --$this->in_transaction; + + mysql_query('COMMIT', $this->link_id); + return; + } + + + function query($sql, $unbuffered = false) + { + if (defined('PUN_SHOW_QUERIES')) + $q_start = get_microtime(); + + if ($unbuffered) + $this->query_result = @mysql_unbuffered_query($sql, $this->link_id); + else + $this->query_result = @mysql_query($sql, $this->link_id); + + if ($this->query_result) + { + if (defined('PUN_SHOW_QUERIES')) + $this->saved_queries[] = array($sql, sprintf('%.5F', get_microtime() - $q_start)); + + ++$this->num_queries; + + return $this->query_result; + } + else + { + if (defined('PUN_SHOW_QUERIES')) + $this->saved_queries[] = array($sql, 0); + + $this->error_no = @mysql_errno($this->link_id); + $this->error_msg = @mysql_error($this->link_id); + + // Rollback transaction + if ($this->in_transaction) + mysql_query('ROLLBACK', $this->link_id); + + --$this->in_transaction; + + return false; + } + } + + + function result($query_id = 0, $row = 0, $col = 0) + { + return ($query_id) ? @mysql_result($query_id, $row, $col) : false; + } + + + function fetch_assoc($query_id = 0) + { + return ($query_id) ? @mysql_fetch_assoc($query_id) : false; + } + + + function fetch_row($query_id = 0) + { + return ($query_id) ? @mysql_fetch_row($query_id) : false; + } + + + function num_rows($query_id = 0) + { + return ($query_id) ? @mysql_num_rows($query_id) : false; + } + + + function affected_rows() + { + return ($this->link_id) ? @mysql_affected_rows($this->link_id) : false; + } + + + function insert_id() + { + return ($this->link_id) ? @mysql_insert_id($this->link_id) : false; + } + + + function get_num_queries() + { + return $this->num_queries; + } + + + function get_saved_queries() + { + return $this->saved_queries; + } + + + function free_result($query_id = false) + { + return ($query_id) ? @mysql_free_result($query_id) : false; + } + + + function escape($str) + { + if (is_array($str)) + return ''; + else if (function_exists('mysql_real_escape_string')) + return mysql_real_escape_string($str, $this->link_id); + else + return mysql_escape_string($str); + } + + + function error() + { + $result['error_sql'] = @current(@end($this->saved_queries)); + $result['error_no'] = $this->error_no; + $result['error_msg'] = $this->error_msg; + + return $result; + } + + + function close() + { + if ($this->link_id) + { + if (is_resource($this->query_result)) + @mysql_free_result($this->query_result); + + return @mysql_close($this->link_id); + } + else + return false; + } + + + function get_names() + { + $result = $this->query('SHOW VARIABLES LIKE \'character_set_connection\''); + return $this->result($result, 0, 1); + } + + + function set_names($names) + { + return $this->query('SET NAMES \''.$this->escape($names).'\''); + } + + + function get_version() + { + $result = $this->query('SELECT VERSION()'); + + return array( + 'name' => 'MySQL Standard (InnoDB)', + 'version' => preg_replace('%^([^-]+).*$%', '\\1', $this->result($result)) + ); + } + + + function table_exists($table_name, $no_prefix = false) + { + $result = $this->query('SHOW TABLES LIKE \''.($no_prefix ? '' : $this->prefix).$this->escape($table_name).'\''); + return $this->num_rows($result) > 0; + } + + + function field_exists($table_name, $field_name, $no_prefix = false) + { + $result = $this->query('SHOW COLUMNS FROM '.($no_prefix ? '' : $this->prefix).$table_name.' LIKE \''.$this->escape($field_name).'\''); + return $this->num_rows($result) > 0; + } + + + function index_exists($table_name, $index_name, $no_prefix = false) + { + $exists = false; + + $result = $this->query('SHOW INDEX FROM '.($no_prefix ? '' : $this->prefix).$table_name); + while ($cur_index = $this->fetch_assoc($result)) + { + if (strtolower($cur_index['Key_name']) == strtolower(($no_prefix ? '' : $this->prefix).$table_name.'_'.$index_name)) + { + $exists = true; + break; + } + } + + return $exists; + } + + + function create_table($table_name, $schema, $no_prefix = false) + { + if ($this->table_exists($table_name, $no_prefix)) + return true; + + $query = 'CREATE TABLE '.($no_prefix ? '' : $this->prefix).$table_name." (\n"; + + // Go through every schema element and add it to the query + foreach ($schema['FIELDS'] as $field_name => $field_data) + { + $field_data['datatype'] = preg_replace(array_keys($this->datatype_transformations), array_values($this->datatype_transformations), $field_data['datatype']); + + $query .= $field_name.' '.$field_data['datatype']; + + if (isset($field_data['collation'])) + $query .= 'CHARACTER SET utf8 COLLATE utf8_'.$field_data['collation']; + + if (!$field_data['allow_null']) + $query .= ' NOT NULL'; + + if (isset($field_data['default'])) + $query .= ' DEFAULT '.$field_data['default']; + + $query .= ",\n"; + } + + // If we have a primary key, add it + if (isset($schema['PRIMARY KEY'])) + $query .= 'PRIMARY KEY ('.implode(',', $schema['PRIMARY KEY']).'),'."\n"; + + // Add unique keys + if (isset($schema['UNIQUE KEYS'])) + { + foreach ($schema['UNIQUE KEYS'] as $key_name => $key_fields) + $query .= 'UNIQUE KEY '.($no_prefix ? '' : $this->prefix).$table_name.'_'.$key_name.'('.implode(',', $key_fields).'),'."\n"; + } + + // Add indexes + if (isset($schema['INDEXES'])) + { + foreach ($schema['INDEXES'] as $index_name => $index_fields) + $query .= 'KEY '.($no_prefix ? '' : $this->prefix).$table_name.'_'.$index_name.'('.implode(',', $index_fields).'),'."\n"; + } + + // We remove the last two characters (a newline and a comma) and add on the ending + $query = substr($query, 0, strlen($query) - 2)."\n".') ENGINE = '.(isset($schema['ENGINE']) ? $schema['ENGINE'] : 'InnoDB').' CHARACTER SET utf8'; + + return $this->query($query) ? true : false; + } + + + function drop_table($table_name, $no_prefix = false) + { + if (!$this->table_exists($table_name, $no_prefix)) + return true; + + return $this->query('DROP TABLE '.($no_prefix ? '' : $this->prefix).$table_name) ? true : false; + } + + + function rename_table($old_table, $new_table, $no_prefix = false) + { + // If the new table exists and the old one doesn't, then we're happy + if ($this->table_exists($new_table, $no_prefix) && !$this->table_exists($old_table, $no_prefix)) + return true; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$old_table.' RENAME TO '.($no_prefix ? '' : $this->prefix).$new_table) ? true : false; + } + + + function add_field($table_name, $field_name, $field_type, $allow_null, $default_value = null, $after_field = null, $no_prefix = false) + { + if ($this->field_exists($table_name, $field_name, $no_prefix)) + return true; + + $field_type = preg_replace(array_keys($this->datatype_transformations), array_values($this->datatype_transformations), $field_type); + + if (!is_null($default_value) && !is_int($default_value) && !is_float($default_value)) + $default_value = '\''.$this->escape($default_value).'\''; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' ADD '.$field_name.' '.$field_type.($allow_null ? '' : ' NOT NULL').(!is_null($default_value) ? ' DEFAULT '.$default_value : '').(!is_null($after_field) ? ' AFTER '.$after_field : '')) ? true : false; + } + + + function alter_field($table_name, $field_name, $field_type, $allow_null, $default_value = null, $after_field = null, $no_prefix = false) + { + if (!$this->field_exists($table_name, $field_name, $no_prefix)) + return true; + + $field_type = preg_replace(array_keys($this->datatype_transformations), array_values($this->datatype_transformations), $field_type); + + if (!is_null($default_value) && !is_int($default_value) && !is_float($default_value)) + $default_value = '\''.$this->escape($default_value).'\''; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' MODIFY '.$field_name.' '.$field_type.($allow_null ? '' : ' NOT NULL').(!is_null($default_value) ? ' DEFAULT '.$default_value : '').(!is_null($after_field) ? ' AFTER '.$after_field : '')) ? true : false; + } + + + function drop_field($table_name, $field_name, $no_prefix = false) + { + if (!$this->field_exists($table_name, $field_name, $no_prefix)) + return true; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' DROP '.$field_name) ? true : false; + } + + + function add_index($table_name, $index_name, $index_fields, $unique = false, $no_prefix = false) + { + if ($this->index_exists($table_name, $index_name, $no_prefix)) + return true; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' ADD '.($unique ? 'UNIQUE ' : '').'INDEX '.($no_prefix ? '' : $this->prefix).$table_name.'_'.$index_name.' ('.implode(',', $index_fields).')') ? true : false; + } + + + function drop_index($table_name, $index_name, $no_prefix = false) + { + if (!$this->index_exists($table_name, $index_name, $no_prefix)) + return true; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' DROP INDEX '.($no_prefix ? '' : $this->prefix).$table_name.'_'.$index_name) ? true : false; + } + + function truncate_table($table_name, $no_prefix = false) + { + return $this->query('TRUNCATE TABLE '.($no_prefix ? '' : $this->prefix).$table_name) ? true : false; + } +} diff --git a/include/dblayer/mysqli.php b/include/dblayer/mysqli.php new file mode 100644 index 0000000..05ae599 --- /dev/null +++ b/include/dblayer/mysqli.php @@ -0,0 +1,385 @@ + 'INT(10) UNSIGNED AUTO_INCREMENT' + ); + + + function __construct($db_host, $db_username, $db_password, $db_name, $db_prefix, $p_connect) + { + $this->prefix = $db_prefix; + + // Was a custom port supplied with $db_host? + if (strpos($db_host, ':') !== false) + list($db_host, $db_port) = explode(':', $db_host); + + // Persistent connection in MySQLi are only available in PHP 5.3 and later releases + $p_connect = $p_connect && version_compare(PHP_VERSION, '5.3.0', '>=') ? 'p:' : ''; + + if (isset($db_port)) + $this->link_id = @mysqli_connect($p_connect.$db_host, $db_username, $db_password, $db_name, $db_port); + else + $this->link_id = @mysqli_connect($p_connect.$db_host, $db_username, $db_password, $db_name); + + if (!$this->link_id) + error('Unable to connect to MySQL and select database. MySQL reported: '.mysqli_connect_error(), __FILE__, __LINE__); + + // Setup the client-server character set (UTF-8) + if (!defined('FORUM_NO_SET_NAMES')) + $this->set_names('utf8'); + + return $this->link_id; + } + + + function DBLayer($db_host, $db_username, $db_password, $db_name, $db_prefix, $p_connect) + { + $this->__construct($db_host, $db_username, $db_password, $db_name, $db_prefix, $p_connect); + } + + + function start_transaction() + { + return; + } + + + function end_transaction() + { + return; + } + + + function query($sql, $unbuffered = false) + { + if (defined('PUN_SHOW_QUERIES')) + $q_start = get_microtime(); + + $this->query_result = @mysqli_query($this->link_id, $sql); + + if ($this->query_result) + { + if (defined('PUN_SHOW_QUERIES')) + $this->saved_queries[] = array($sql, sprintf('%.5F', get_microtime() - $q_start)); + + ++$this->num_queries; + + return $this->query_result; + } + else + { + if (defined('PUN_SHOW_QUERIES')) + $this->saved_queries[] = array($sql, 0); + + $this->error_no = @mysqli_errno($this->link_id); + $this->error_msg = @mysqli_error($this->link_id); + + return false; + } + } + + + function result($query_id = 0, $row = 0, $col = 0) + { + if ($query_id) + { + if ($row !== 0 && @mysqli_data_seek($query_id, $row) === false) + return false; + + $cur_row = @mysqli_fetch_row($query_id); + if ($cur_row === false) + return false; + + return $cur_row[$col]; + } + else + return false; + } + + + function fetch_assoc($query_id = 0) + { + return ($query_id) ? @mysqli_fetch_assoc($query_id) : false; + } + + + function fetch_row($query_id = 0) + { + return ($query_id) ? @mysqli_fetch_row($query_id) : false; + } + + + function num_rows($query_id = 0) + { + return ($query_id) ? @mysqli_num_rows($query_id) : false; + } + + + function affected_rows() + { + return ($this->link_id) ? @mysqli_affected_rows($this->link_id) : false; + } + + + function insert_id() + { + return ($this->link_id) ? @mysqli_insert_id($this->link_id) : false; + } + + + function get_num_queries() + { + return $this->num_queries; + } + + + function get_saved_queries() + { + return $this->saved_queries; + } + + + function free_result($query_id = false) + { + return ($query_id) ? @mysqli_free_result($query_id) : false; + } + + + function escape($str) + { + return is_array($str) ? '' : mysqli_real_escape_string($this->link_id, $str); + } + + + function error() + { + $result['error_sql'] = @current(@end($this->saved_queries)); + $result['error_no'] = $this->error_no; + $result['error_msg'] = $this->error_msg; + + return $result; + } + + + function close() + { + if ($this->link_id) + { + if ($this->query_result instanceof mysqli_result) + @mysqli_free_result($this->query_result); + + return @mysqli_close($this->link_id); + } + else + return false; + } + + + function get_names() + { + $result = $this->query('SHOW VARIABLES LIKE \'character_set_connection\''); + return $this->result($result, 0, 1); + } + + + function set_names($names) + { + return $this->query('SET NAMES \''.$this->escape($names).'\''); + } + + + function get_version() + { + $result = $this->query('SELECT VERSION()'); + + return array( + 'name' => 'MySQL Improved', + 'version' => preg_replace('%^([^-]+).*$%', '\\1', $this->result($result)) + ); + } + + + function table_exists($table_name, $no_prefix = false) + { + $result = $this->query('SHOW TABLES LIKE \''.($no_prefix ? '' : $this->prefix).$this->escape($table_name).'\''); + return $this->num_rows($result) > 0; + } + + + function field_exists($table_name, $field_name, $no_prefix = false) + { + $result = $this->query('SHOW COLUMNS FROM '.($no_prefix ? '' : $this->prefix).$table_name.' LIKE \''.$this->escape($field_name).'\''); + return $this->num_rows($result) > 0; + } + + + function index_exists($table_name, $index_name, $no_prefix = false) + { + $exists = false; + + $result = $this->query('SHOW INDEX FROM '.($no_prefix ? '' : $this->prefix).$table_name); + while ($cur_index = $this->fetch_assoc($result)) + { + if (strtolower($cur_index['Key_name']) == strtolower(($no_prefix ? '' : $this->prefix).$table_name.'_'.$index_name)) + { + $exists = true; + break; + } + } + + return $exists; + } + + + function create_table($table_name, $schema, $no_prefix = false) + { + if ($this->table_exists($table_name, $no_prefix)) + return true; + + $query = 'CREATE TABLE '.($no_prefix ? '' : $this->prefix).$table_name." (\n"; + + // Go through every schema element and add it to the query + foreach ($schema['FIELDS'] as $field_name => $field_data) + { + $field_data['datatype'] = preg_replace(array_keys($this->datatype_transformations), array_values($this->datatype_transformations), $field_data['datatype']); + + $query .= $field_name.' '.$field_data['datatype']; + + if (isset($field_data['collation'])) + $query .= 'CHARACTER SET utf8 COLLATE utf8_'.$field_data['collation']; + + if (!$field_data['allow_null']) + $query .= ' NOT NULL'; + + if (isset($field_data['default'])) + $query .= ' DEFAULT '.$field_data['default']; + + $query .= ",\n"; + } + + // If we have a primary key, add it + if (isset($schema['PRIMARY KEY'])) + $query .= 'PRIMARY KEY ('.implode(',', $schema['PRIMARY KEY']).'),'."\n"; + + // Add unique keys + if (isset($schema['UNIQUE KEYS'])) + { + foreach ($schema['UNIQUE KEYS'] as $key_name => $key_fields) + $query .= 'UNIQUE KEY '.($no_prefix ? '' : $this->prefix).$table_name.'_'.$key_name.'('.implode(',', $key_fields).'),'."\n"; + } + + // Add indexes + if (isset($schema['INDEXES'])) + { + foreach ($schema['INDEXES'] as $index_name => $index_fields) + $query .= 'KEY '.($no_prefix ? '' : $this->prefix).$table_name.'_'.$index_name.'('.implode(',', $index_fields).'),'."\n"; + } + + // We remove the last two characters (a newline and a comma) and add on the ending + $query = substr($query, 0, strlen($query) - 2)."\n".') ENGINE = '.(isset($schema['ENGINE']) ? $schema['ENGINE'] : 'MyISAM').' CHARACTER SET utf8'; + + return $this->query($query) ? true : false; + } + + + function drop_table($table_name, $no_prefix = false) + { + if (!$this->table_exists($table_name, $no_prefix)) + return true; + + return $this->query('DROP TABLE '.($no_prefix ? '' : $this->prefix).$table_name) ? true : false; + } + + + function rename_table($old_table, $new_table, $no_prefix = false) + { + // If the new table exists and the old one doesn't, then we're happy + if ($this->table_exists($new_table, $no_prefix) && !$this->table_exists($old_table, $no_prefix)) + return true; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$old_table.' RENAME TO '.($no_prefix ? '' : $this->prefix).$new_table) ? true : false; + } + + + function add_field($table_name, $field_name, $field_type, $allow_null, $default_value = null, $after_field = null, $no_prefix = false) + { + if ($this->field_exists($table_name, $field_name, $no_prefix)) + return true; + + $field_type = preg_replace(array_keys($this->datatype_transformations), array_values($this->datatype_transformations), $field_type); + + if (!is_null($default_value) && !is_int($default_value) && !is_float($default_value)) + $default_value = '\''.$this->escape($default_value).'\''; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' ADD '.$field_name.' '.$field_type.($allow_null ? '' : ' NOT NULL').(!is_null($default_value) ? ' DEFAULT '.$default_value : '').(!is_null($after_field) ? ' AFTER '.$after_field : '')) ? true : false; + } + + + function alter_field($table_name, $field_name, $field_type, $allow_null, $default_value = null, $after_field = null, $no_prefix = false) + { + if (!$this->field_exists($table_name, $field_name, $no_prefix)) + return true; + + $field_type = preg_replace(array_keys($this->datatype_transformations), array_values($this->datatype_transformations), $field_type); + + if (!is_null($default_value) && !is_int($default_value) && !is_float($default_value)) + $default_value = '\''.$this->escape($default_value).'\''; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' MODIFY '.$field_name.' '.$field_type.($allow_null ? '' : ' NOT NULL').(!is_null($default_value) ? ' DEFAULT '.$default_value : '').(!is_null($after_field) ? ' AFTER '.$after_field : '')) ? true : false; + } + + + function drop_field($table_name, $field_name, $no_prefix = false) + { + if (!$this->field_exists($table_name, $field_name, $no_prefix)) + return true; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' DROP '.$field_name) ? true : false; + } + + + function add_index($table_name, $index_name, $index_fields, $unique = false, $no_prefix = false) + { + if ($this->index_exists($table_name, $index_name, $no_prefix)) + return true; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' ADD '.($unique ? 'UNIQUE ' : '').'INDEX '.($no_prefix ? '' : $this->prefix).$table_name.'_'.$index_name.' ('.implode(',', $index_fields).')') ? true : false; + } + + + function drop_index($table_name, $index_name, $no_prefix = false) + { + if (!$this->index_exists($table_name, $index_name, $no_prefix)) + return true; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' DROP INDEX '.($no_prefix ? '' : $this->prefix).$table_name.'_'.$index_name) ? true : false; + } + + function truncate_table($table_name, $no_prefix = false) + { + return $this->query('TRUNCATE TABLE '.($no_prefix ? '' : $this->prefix).$table_name) ? true : false; + } +} diff --git a/include/dblayer/mysqli_innodb.php b/include/dblayer/mysqli_innodb.php new file mode 100644 index 0000000..f132276 --- /dev/null +++ b/include/dblayer/mysqli_innodb.php @@ -0,0 +1,398 @@ + 'INT(10) UNSIGNED AUTO_INCREMENT' + ); + + + function __construct($db_host, $db_username, $db_password, $db_name, $db_prefix, $p_connect) + { + $this->prefix = $db_prefix; + + // Was a custom port supplied with $db_host? + if (strpos($db_host, ':') !== false) + list($db_host, $db_port) = explode(':', $db_host); + + // Persistent connection in MySQLi are only available in PHP 5.3 and later releases + $p_connect = $p_connect && version_compare(PHP_VERSION, '5.3.0', '>=') ? 'p:' : ''; + + if (isset($db_port)) + $this->link_id = @mysqli_connect($p_connect.$db_host, $db_username, $db_password, $db_name, $db_port); + else + $this->link_id = @mysqli_connect($p_connect.$db_host, $db_username, $db_password, $db_name); + + if (!$this->link_id) + error('Unable to connect to MySQL and select database. MySQL reported: '.mysqli_connect_error(), __FILE__, __LINE__); + + // Setup the client-server character set (UTF-8) + if (!defined('FORUM_NO_SET_NAMES')) + $this->set_names('utf8'); + + return $this->link_id; + } + + + function DBLayer($db_host, $db_username, $db_password, $db_name, $db_prefix, $p_connect) + { + $this->__construct($db_host, $db_username, $db_password, $db_name, $db_prefix, $p_connect); + } + + + function start_transaction() + { + ++$this->in_transaction; + + mysqli_query($this->link_id, 'START TRANSACTION'); + return; + } + + + function end_transaction() + { + --$this->in_transaction; + + mysqli_query($this->link_id, 'COMMIT'); + return; + } + + + function query($sql, $unbuffered = false) + { + if (defined('PUN_SHOW_QUERIES')) + $q_start = get_microtime(); + + $this->query_result = @mysqli_query($this->link_id, $sql); + + if ($this->query_result) + { + if (defined('PUN_SHOW_QUERIES')) + $this->saved_queries[] = array($sql, sprintf('%.5F', get_microtime() - $q_start)); + + ++$this->num_queries; + + return $this->query_result; + } + else + { + if (defined('PUN_SHOW_QUERIES')) + $this->saved_queries[] = array($sql, 0); + + $this->error_no = @mysqli_errno($this->link_id); + $this->error_msg = @mysqli_error($this->link_id); + + // Rollback transaction + if ($this->in_transaction) + mysqli_query($this->link_id, 'ROLLBACK'); + + --$this->in_transaction; + + return false; + } + } + + + function result($query_id = 0, $row = 0, $col = 0) + { + if ($query_id) + { + if ($row !== 0 && @mysqli_data_seek($query_id, $row) === false) + return false; + + $cur_row = @mysqli_fetch_row($query_id); + if ($cur_row === false) + return false; + + return $cur_row[$col]; + } + else + return false; + } + + + function fetch_assoc($query_id = 0) + { + return ($query_id) ? @mysqli_fetch_assoc($query_id) : false; + } + + + function fetch_row($query_id = 0) + { + return ($query_id) ? @mysqli_fetch_row($query_id) : false; + } + + + function num_rows($query_id = 0) + { + return ($query_id) ? @mysqli_num_rows($query_id) : false; + } + + + function affected_rows() + { + return ($this->link_id) ? @mysqli_affected_rows($this->link_id) : false; + } + + + function insert_id() + { + return ($this->link_id) ? @mysqli_insert_id($this->link_id) : false; + } + + + function get_num_queries() + { + return $this->num_queries; + } + + + function get_saved_queries() + { + return $this->saved_queries; + } + + + function free_result($query_id = false) + { + return ($query_id) ? @mysqli_free_result($query_id) : false; + } + + + function escape($str) + { + return is_array($str) ? '' : mysqli_real_escape_string($this->link_id, $str); + } + + + function error() + { + $result['error_sql'] = @current(@end($this->saved_queries)); + $result['error_no'] = $this->error_no; + $result['error_msg'] = $this->error_msg; + + return $result; + } + + + function close() + { + if ($this->link_id) + { + if ($this->query_result instanceof mysqli_result) + @mysqli_free_result($this->query_result); + + return @mysqli_close($this->link_id); + } + else + return false; + } + + + function get_names() + { + $result = $this->query('SHOW VARIABLES LIKE \'character_set_connection\''); + return $this->result($result, 0, 1); + } + + + function set_names($names) + { + return $this->query('SET NAMES \''.$this->escape($names).'\''); + } + + + function get_version() + { + $result = $this->query('SELECT VERSION()'); + + return array( + 'name' => 'MySQL Improved (InnoDB)', + 'version' => preg_replace('%^([^-]+).*$%', '\\1', $this->result($result)) + ); + } + + + function table_exists($table_name, $no_prefix = false) + { + $result = $this->query('SHOW TABLES LIKE \''.($no_prefix ? '' : $this->prefix).$this->escape($table_name).'\''); + return $this->num_rows($result) > 0; + } + + + function field_exists($table_name, $field_name, $no_prefix = false) + { + $result = $this->query('SHOW COLUMNS FROM '.($no_prefix ? '' : $this->prefix).$table_name.' LIKE \''.$this->escape($field_name).'\''); + return $this->num_rows($result) > 0; + } + + + function index_exists($table_name, $index_name, $no_prefix = false) + { + $exists = false; + + $result = $this->query('SHOW INDEX FROM '.($no_prefix ? '' : $this->prefix).$table_name); + while ($cur_index = $this->fetch_assoc($result)) + { + if (strtolower($cur_index['Key_name']) == strtolower(($no_prefix ? '' : $this->prefix).$table_name.'_'.$index_name)) + { + $exists = true; + break; + } + } + + return $exists; + } + + + function create_table($table_name, $schema, $no_prefix = false) + { + if ($this->table_exists($table_name, $no_prefix)) + return true; + + $query = 'CREATE TABLE '.($no_prefix ? '' : $this->prefix).$table_name." (\n"; + + // Go through every schema element and add it to the query + foreach ($schema['FIELDS'] as $field_name => $field_data) + { + $field_data['datatype'] = preg_replace(array_keys($this->datatype_transformations), array_values($this->datatype_transformations), $field_data['datatype']); + + $query .= $field_name.' '.$field_data['datatype']; + + if (isset($field_data['collation'])) + $query .= 'CHARACTER SET utf8 COLLATE utf8_'.$field_data['collation']; + + if (!$field_data['allow_null']) + $query .= ' NOT NULL'; + + if (isset($field_data['default'])) + $query .= ' DEFAULT '.$field_data['default']; + + $query .= ",\n"; + } + + // If we have a primary key, add it + if (isset($schema['PRIMARY KEY'])) + $query .= 'PRIMARY KEY ('.implode(',', $schema['PRIMARY KEY']).'),'."\n"; + + // Add unique keys + if (isset($schema['UNIQUE KEYS'])) + { + foreach ($schema['UNIQUE KEYS'] as $key_name => $key_fields) + $query .= 'UNIQUE KEY '.($no_prefix ? '' : $this->prefix).$table_name.'_'.$key_name.'('.implode(',', $key_fields).'),'."\n"; + } + + // Add indexes + if (isset($schema['INDEXES'])) + { + foreach ($schema['INDEXES'] as $index_name => $index_fields) + $query .= 'KEY '.($no_prefix ? '' : $this->prefix).$table_name.'_'.$index_name.'('.implode(',', $index_fields).'),'."\n"; + } + + // We remove the last two characters (a newline and a comma) and add on the ending + $query = substr($query, 0, strlen($query) - 2)."\n".') ENGINE = '.(isset($schema['ENGINE']) ? $schema['ENGINE'] : 'InnoDB').' CHARACTER SET utf8'; + + return $this->query($query) ? true : false; + } + + + function drop_table($table_name, $no_prefix = false) + { + if (!$this->table_exists($table_name, $no_prefix)) + return true; + + return $this->query('DROP TABLE '.($no_prefix ? '' : $this->prefix).$table_name) ? true : false; + } + + + function rename_table($old_table, $new_table, $no_prefix = false) + { + // If the new table exists and the old one doesn't, then we're happy + if ($this->table_exists($new_table, $no_prefix) && !$this->table_exists($old_table, $no_prefix)) + return true; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$old_table.' RENAME TO '.($no_prefix ? '' : $this->prefix).$new_table) ? true : false; + } + + + function add_field($table_name, $field_name, $field_type, $allow_null, $default_value = null, $after_field = null, $no_prefix = false) + { + if ($this->field_exists($table_name, $field_name, $no_prefix)) + return true; + + $field_type = preg_replace(array_keys($this->datatype_transformations), array_values($this->datatype_transformations), $field_type); + + if (!is_null($default_value) && !is_int($default_value) && !is_float($default_value)) + $default_value = '\''.$this->escape($default_value).'\''; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' ADD '.$field_name.' '.$field_type.($allow_null ? '' : ' NOT NULL').(!is_null($default_value) ? ' DEFAULT '.$default_value : '').(!is_null($after_field) ? ' AFTER '.$after_field : '')) ? true : false; + } + + + function alter_field($table_name, $field_name, $field_type, $allow_null, $default_value = null, $after_field = null, $no_prefix = false) + { + if (!$this->field_exists($table_name, $field_name, $no_prefix)) + return true; + + $field_type = preg_replace(array_keys($this->datatype_transformations), array_values($this->datatype_transformations), $field_type); + + if (!is_null($default_value) && !is_int($default_value) && !is_float($default_value)) + $default_value = '\''.$this->escape($default_value).'\''; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' MODIFY '.$field_name.' '.$field_type.($allow_null ? '' : ' NOT NULL').(!is_null($default_value) ? ' DEFAULT '.$default_value : '').(!is_null($after_field) ? ' AFTER '.$after_field : '')) ? true : false; + } + + + function drop_field($table_name, $field_name, $no_prefix = false) + { + if (!$this->field_exists($table_name, $field_name, $no_prefix)) + return true; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' DROP '.$field_name) ? true : false; + } + + + function add_index($table_name, $index_name, $index_fields, $unique = false, $no_prefix = false) + { + if ($this->index_exists($table_name, $index_name, $no_prefix)) + return true; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' ADD '.($unique ? 'UNIQUE ' : '').'INDEX '.($no_prefix ? '' : $this->prefix).$table_name.'_'.$index_name.' ('.implode(',', $index_fields).')') ? true : false; + } + + + function drop_index($table_name, $index_name, $no_prefix = false) + { + if (!$this->index_exists($table_name, $index_name, $no_prefix)) + return true; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' DROP INDEX '.($no_prefix ? '' : $this->prefix).$table_name.'_'.$index_name) ? true : false; + } + + function truncate_table($table_name, $no_prefix = false) + { + return $this->query('TRUNCATE TABLE '.($no_prefix ? '' : $this->prefix).$table_name) ? true : false; + } +} diff --git a/include/dblayer/pgsql.php b/include/dblayer/pgsql.php new file mode 100644 index 0000000..8d13ad9 --- /dev/null +++ b/include/dblayer/pgsql.php @@ -0,0 +1,442 @@ + 'SMALLINT', + '%^(MEDIUM)?INT( )?(\$[0-9]+\$)?( )?(UNSIGNED)?$%i' => 'INTEGER', + '%^BIGINT( )?(\$[0-9]+\$)?( )?(UNSIGNED)?$%i' => 'BIGINT', + '%^(TINY|MEDIUM|LONG)?TEXT$%i' => 'TEXT', + '%^DOUBLE( )?(\$[0-9,]+\$)?( )?(UNSIGNED)?$%i' => 'DOUBLE PRECISION', + '%^FLOAT( )?(\$[0-9]+\$)?( )?(UNSIGNED)?$%i' => 'REAL' + ); + + + function __construct($db_host, $db_username, $db_password, $db_name, $db_prefix, $p_connect) + { + $this->prefix = $db_prefix; + + if ($db_host) + { + if (strpos($db_host, ':') !== false) + { + list($db_host, $dbport) = explode(':', $db_host); + $connect_str[] = 'host='.$db_host.' port='.$dbport; + } + else + $connect_str[] = 'host='.$db_host; + } + + if ($db_name) + $connect_str[] = 'dbname='.$db_name; + + if ($db_username) + $connect_str[] = 'user='.$db_username; + + if ($db_password) + $connect_str[] = 'password='.$db_password; + + if ($p_connect) + $this->link_id = @pg_pconnect(implode(' ', $connect_str)); + else + $this->link_id = @pg_connect(implode(' ', $connect_str)); + + if (!$this->link_id) + error('Unable to connect to PostgreSQL server', __FILE__, __LINE__); + + // Setup the client-server character set (UTF-8) + if (!defined('FORUM_NO_SET_NAMES')) + $this->set_names('utf8'); + + return $this->link_id; + } + + + function DBLayer($db_host, $db_username, $db_password, $db_name, $db_prefix, $p_connect) + { + $this->__construct($db_host, $db_username, $db_password, $db_name, $db_prefix, $p_connect); + } + + + function start_transaction() + { + ++$this->in_transaction; + + return (@pg_query($this->link_id, 'BEGIN')) ? true : false; + } + + + function end_transaction() + { + --$this->in_transaction; + + if (@pg_query($this->link_id, 'COMMIT')) + return true; + else + { + @pg_query($this->link_id, 'ROLLBACK'); + return false; + } + } + + + function query($sql, $unbuffered = false) // $unbuffered is ignored since there is no pgsql_unbuffered_query() + { + if (strrpos($sql, 'LIMIT') !== false) + $sql = preg_replace('%LIMIT ([0-9]+),([ 0-9]+)%', 'LIMIT \\2 OFFSET \\1', $sql); + + if (defined('PUN_SHOW_QUERIES')) + $q_start = get_microtime(); + + @pg_send_query($this->link_id, $sql); + $this->query_result = @pg_get_result($this->link_id); + + if (pg_result_status($this->query_result) != PGSQL_FATAL_ERROR) + { + if (defined('PUN_SHOW_QUERIES')) + $this->saved_queries[] = array($sql, sprintf('%.5F', get_microtime() - $q_start)); + + ++$this->num_queries; + + $this->last_query_text[intval($this->query_result)] = $sql; + + return $this->query_result; + } + else + { + if (defined('PUN_SHOW_QUERIES')) + $this->saved_queries[] = array($sql, 0); + + $this->error_no = false; + $this->error_msg = @pg_result_error($this->query_result); + + if ($this->in_transaction) + @pg_query($this->link_id, 'ROLLBACK'); + + --$this->in_transaction; + + return false; + } + } + + + function result($query_id = 0, $row = 0, $col = 0) + { + return ($query_id) ? @pg_fetch_result($query_id, $row, $col) : false; + } + + + function fetch_assoc($query_id = 0) + { + return ($query_id) ? @pg_fetch_assoc($query_id) : false; + } + + + function fetch_row($query_id = 0) + { + return ($query_id) ? @pg_fetch_row($query_id) : false; + } + + + function num_rows($query_id = 0) + { + return ($query_id) ? @pg_num_rows($query_id) : false; + } + + + function affected_rows() + { + return ($this->query_result) ? @pg_affected_rows($this->query_result) : false; + } + + + function insert_id() + { + $query_id = $this->query_result; + + if ($query_id && $this->last_query_text[intval($query_id)] != '') + { + if (preg_match('%^INSERT INTO ([a-z0-9\_\-]+)%is', $this->last_query_text[intval($query_id)], $table_name)) + { + // Hack (don't ask) + if (substr($table_name[1], -6) == 'groups') + $table_name[1] .= '_g'; + + $temp_q_id = @pg_query($this->link_id, 'SELECT currval(\''.$table_name[1].'_id_seq\')'); + return ($temp_q_id) ? intval(@pg_fetch_result($temp_q_id, 0)) : false; + } + } + + return false; + } + + + function get_num_queries() + { + return $this->num_queries; + } + + + function get_saved_queries() + { + return $this->saved_queries; + } + + + function free_result($query_id = false) + { + if (!$query_id) + $query_id = $this->query_result; + + return ($query_id) ? @pg_free_result($query_id) : false; + } + + + function escape($str) + { + return is_array($str) ? '' : pg_escape_string($str); + } + + + function error() + { + $result['error_sql'] = @current(@end($this->saved_queries)); + $result['error_no'] = $this->error_no; + $result['error_msg'] = $this->error_msg; + + return $result; + } + + + function close() + { + if ($this->link_id) + { + if ($this->in_transaction) + { + if (defined('PUN_SHOW_QUERIES')) + $this->saved_queries[] = array('COMMIT', 0); + + @pg_query($this->link_id, 'COMMIT'); + } + + if ($this->query_result) + @pg_free_result($this->query_result); + + return @pg_close($this->link_id); + } + else + return false; + } + + + function get_names() + { + $result = $this->query('SHOW client_encoding'); + return strtolower($this->result($result)); // MySQL returns lowercase so lets be consistent + } + + + function set_names($names) + { + return $this->query('SET NAMES \''.$this->escape($names).'\''); + } + + + function get_version() + { + $result = $this->query('SELECT VERSION()'); + + return array( + 'name' => 'PostgreSQL', + 'version' => preg_replace('%^[^0-9]+([^\s,-]+).*$%', '\\1', $this->result($result)) + ); + } + + + function table_exists($table_name, $no_prefix = false) + { + $result = $this->query('SELECT 1 FROM pg_class WHERE relname = \''.($no_prefix ? '' : $this->prefix).$this->escape($table_name).'\''); + return $this->num_rows($result) > 0; + } + + + function field_exists($table_name, $field_name, $no_prefix = false) + { + $result = $this->query('SELECT 1 FROM pg_class c INNER JOIN pg_attribute a ON a.attrelid = c.oid WHERE c.relname = \''.($no_prefix ? '' : $this->prefix).$this->escape($table_name).'\' AND a.attname = \''.$this->escape($field_name).'\''); + return $this->num_rows($result) > 0; + } + + + function index_exists($table_name, $index_name, $no_prefix = false) + { + $result = $this->query('SELECT 1 FROM pg_index i INNER JOIN pg_class c1 ON c1.oid = i.indrelid INNER JOIN pg_class c2 ON c2.oid = i.indexrelid WHERE c1.relname = \''.($no_prefix ? '' : $this->prefix).$this->escape($table_name).'\' AND c2.relname = \''.($no_prefix ? '' : $this->prefix).$this->escape($table_name).'_'.$this->escape($index_name).'\''); + return $this->num_rows($result) > 0; + } + + + function create_table($table_name, $schema, $no_prefix = false) + { + if ($this->table_exists($table_name, $no_prefix)) + return true; + + $query = 'CREATE TABLE '.($no_prefix ? '' : $this->prefix).$table_name." (\n"; + + // Go through every schema element and add it to the query + foreach ($schema['FIELDS'] as $field_name => $field_data) + { + $field_data['datatype'] = preg_replace(array_keys($this->datatype_transformations), array_values($this->datatype_transformations), $field_data['datatype']); + + $query .= $field_name.' '.$field_data['datatype']; + + // The SERIAL datatype is a special case where we don't need to say not null + if (!$field_data['allow_null'] && $field_data['datatype'] != 'SERIAL') + $query .= ' NOT NULL'; + + if (isset($field_data['default'])) + $query .= ' DEFAULT '.$field_data['default']; + + $query .= ",\n"; + } + + // If we have a primary key, add it + if (isset($schema['PRIMARY KEY'])) + $query .= 'PRIMARY KEY ('.implode(',', $schema['PRIMARY KEY']).'),'."\n"; + + // Add unique keys + if (isset($schema['UNIQUE KEYS'])) + { + foreach ($schema['UNIQUE KEYS'] as $key_name => $key_fields) + $query .= 'UNIQUE ('.implode(',', $key_fields).'),'."\n"; + } + + // We remove the last two characters (a newline and a comma) and add on the ending + $query = substr($query, 0, strlen($query) - 2)."\n".')'; + + $result = $this->query($query) ? true : false; + + // Add indexes + if (isset($schema['INDEXES'])) + { + foreach ($schema['INDEXES'] as $index_name => $index_fields) + $result &= $this->add_index($table_name, $index_name, $index_fields, false, $no_prefix); + } + + return $result; + } + + + function drop_table($table_name, $no_prefix = false) + { + if (!$this->table_exists($table_name, $no_prefix)) + return true; + + return $this->query('DROP TABLE '.($no_prefix ? '' : $this->prefix).$table_name) ? true : false; + } + + + function rename_table($old_table, $new_table, $no_prefix = false) + { + // If the new table exists and the old one doesn't, then we're happy + if ($this->table_exists($new_table, $no_prefix) && !$this->table_exists($old_table, $no_prefix)) + return true; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$old_table.' RENAME TO '.($no_prefix ? '' : $this->prefix).$new_table) ? true : false; + } + + + function add_field($table_name, $field_name, $field_type, $allow_null, $default_value = null, $after_field = null, $no_prefix = false) + { + if ($this->field_exists($table_name, $field_name, $no_prefix)) + return true; + + $field_type = preg_replace(array_keys($this->datatype_transformations), array_values($this->datatype_transformations), $field_type); + + $result = $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' ADD '.$field_name.' '.$field_type) ? true : false; + + if (!is_null($default_value)) + { + if (!is_int($default_value) && !is_float($default_value)) + $default_value = '\''.$this->escape($default_value).'\''; + + $result &= $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' ALTER '.$field_name.' SET DEFAULT '.$default_value) ? true : false; + $result &= $this->query('UPDATE '.($no_prefix ? '' : $this->prefix).$table_name.' SET '.$field_name.'='.$default_value) ? true : false; + } + + if (!$allow_null) + $result &= $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' ALTER '.$field_name.' SET NOT NULL') ? true : false; + + return $result; + } + + + function alter_field($table_name, $field_name, $field_type, $allow_null, $default_value = null, $after_field = null, $no_prefix = false) + { + if (!$this->field_exists($table_name, $field_name, $no_prefix)) + return true; + + $field_type = preg_replace(array_keys($this->datatype_transformations), array_values($this->datatype_transformations), $field_type); + + $result = $this->add_field($table_name, 'tmp_'.$field_name, $field_type, $allow_null, $default_value, $after_field, $no_prefix); + $result &= $this->query('UPDATE '.($no_prefix ? '' : $this->prefix).$table_name.' SET tmp_'.$field_name.' = '.$field_name) ? true : false; + $result &= $this->drop_field($table_name, $field_name, $no_prefix); + $result &= $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' RENAME COLUMN tmp_'.$field_name.' TO '.$field_name) ? true : false; + + return $result; + } + + + function drop_field($table_name, $field_name, $no_prefix = false) + { + if (!$this->field_exists($table_name, $field_name, $no_prefix)) + return true; + + return $this->query('ALTER TABLE '.($no_prefix ? '' : $this->prefix).$table_name.' DROP '.$field_name) ? true : false; + } + + + function add_index($table_name, $index_name, $index_fields, $unique = false, $no_prefix = false) + { + if ($this->index_exists($table_name, $index_name, $no_prefix)) + return true; + + return $this->query('CREATE '.($unique ? 'UNIQUE ' : '').'INDEX '.($no_prefix ? '' : $this->prefix).$table_name.'_'.$index_name.' ON '.($no_prefix ? '' : $this->prefix).$table_name.'('.implode(',', $index_fields).')') ? true : false; + } + + + function drop_index($table_name, $index_name, $no_prefix = false) + { + if (!$this->index_exists($table_name, $index_name, $no_prefix)) + return true; + + return $this->query('DROP INDEX '.($no_prefix ? '' : $this->prefix).$table_name.'_'.$index_name) ? true : false; + } + + function truncate_table($table_name, $no_prefix = false) + { + return $this->query('DELETE FROM '.($no_prefix ? '' : $this->prefix).$table_name) ? true : false; + } +} diff --git a/include/dblayer/sqlite.php b/include/dblayer/sqlite.php new file mode 100644 index 0000000..f9164fa --- /dev/null +++ b/include/dblayer/sqlite.php @@ -0,0 +1,601 @@ + 'INTEGER', + '%^(TINY|SMALL|MEDIUM|BIG)?INT( )?(\$[0-9]+\$)?( )?(UNSIGNED)?$%i' => 'INTEGER', + '%^(TINY|MEDIUM|LONG)?TEXT$%i' => 'TEXT' + ); + + + function __construct($db_host, $db_username, $db_password, $db_name, $db_prefix, $p_connect) + { + // Prepend $db_name with the path to the forum root directory + $db_name = PUN_ROOT.$db_name; + + $this->prefix = $db_prefix; + + if (!file_exists($db_name)) + { + @touch($db_name); + @chmod($db_name, 0666); + if (!file_exists($db_name)) + error('Unable to create new database \''.$db_name.'\'. Permission denied', __FILE__, __LINE__); + } + + if (!is_readable($db_name)) + error('Unable to open database \''.$db_name.'\' for reading. Permission denied', __FILE__, __LINE__); + + if (!forum_is_writable($db_name)) + error('Unable to open database \''.$db_name.'\' for writing. Permission denied', __FILE__, __LINE__); + + if ($p_connect) + $this->link_id = @sqlite_popen($db_name, 0666, $sqlite_error); + else + $this->link_id = @sqlite_open($db_name, 0666, $sqlite_error); + + if (!$this->link_id) + error('Unable to open database \''.$db_name.'\'. SQLite reported: '.$sqlite_error, __FILE__, __LINE__); + else + return $this->link_id; + } + + + function DBLayer($db_host, $db_username, $db_password, $db_name, $db_prefix, $p_connect) + { + $this->__construct($db_host, $db_username, $db_password, $db_name, $db_prefix, $p_connect); + } + + + function start_transaction() + { + ++$this->in_transaction; + + return (@sqlite_query($this->link_id, 'BEGIN')) ? true : false; + } + + + function end_transaction() + { + --$this->in_transaction; + + if (@sqlite_query($this->link_id, 'COMMIT')) + return true; + else + { + @sqlite_query($this->link_id, 'ROLLBACK'); + return false; + } + } + + + function query($sql, $unbuffered = false) + { + if (defined('PUN_SHOW_QUERIES')) + $q_start = get_microtime(); + + if ($unbuffered) + $this->query_result = @sqlite_unbuffered_query($this->link_id, $sql); + else + $this->query_result = @sqlite_query($this->link_id, $sql); + + if ($this->query_result) + { + if (defined('PUN_SHOW_QUERIES')) + $this->saved_queries[] = array($sql, sprintf('%.5F', get_microtime() - $q_start)); + + ++$this->num_queries; + + return $this->query_result; + } + else + { + if (defined('PUN_SHOW_QUERIES')) + $this->saved_queries[] = array($sql, 0); + + $this->error_no = @sqlite_last_error($this->link_id); + $this->error_msg = @sqlite_error_string($this->error_no); + + if ($this->in_transaction) + @sqlite_query($this->link_id, 'ROLLBACK'); + + --$this->in_transaction; + + return false; + } + } + + + function result($query_id = 0, $row = 0, $col = 0) + { + if ($query_id) + { + if ($row !== 0 && @sqlite_seek($query_id, $row) === false) + return false; + + $cur_row = @sqlite_current($query_id); + if ($cur_row === false) + return false; + + return $cur_row[$col]; + } + else + return false; + } + + + function fetch_assoc($query_id = 0) + { + if ($query_id) + { + $cur_row = @sqlite_fetch_array($query_id, SQLITE_ASSOC); + if ($cur_row) + { + // Horrible hack to get rid of table names and table aliases from the array keys + foreach ($cur_row as $key => $value) + { + $dot_spot = strpos($key, '.'); + if ($dot_spot !== false) + { + unset($cur_row[$key]); + $key = substr($key, $dot_spot+1); + $cur_row[$key] = $value; + } + } + } + + return $cur_row; + } + else + return false; + } + + + function fetch_row($query_id = 0) + { + return ($query_id) ? @sqlite_fetch_array($query_id, SQLITE_NUM) : false; + } + + + function num_rows($query_id = 0) + { + return ($query_id) ? @sqlite_num_rows($query_id) : false; + } + + + function affected_rows() + { + return ($this->link_id) ? @sqlite_changes($this->link_id) : false; + } + + + function insert_id() + { + return ($this->link_id) ? @sqlite_last_insert_rowid($this->link_id) : false; + } + + + function get_num_queries() + { + return $this->num_queries; + } + + + function get_saved_queries() + { + return $this->saved_queries; + } + + + function free_result($query_id = false) + { + return true; + } + + + function escape($str) + { + return is_array($str) ? '' : sqlite_escape_string($str); + } + + + function error() + { + $result['error_sql'] = @current(@end($this->saved_queries)); + $result['error_no'] = $this->error_no; + $result['error_msg'] = $this->error_msg; + + return $result; + } + + + function close() + { + if ($this->link_id) + { + if ($this->in_transaction) + { + if (defined('PUN_SHOW_QUERIES')) + $this->saved_queries[] = array('COMMIT', 0); + + @sqlite_query($this->link_id, 'COMMIT'); + } + + return @sqlite_close($this->link_id); + } + else + return false; + } + + + function get_names() + { + return ''; + } + + + function set_names($names) + { + return true; + } + + + function get_version() + { + return array( + 'name' => 'SQLite', + 'version' => sqlite_libversion() + ); + } + + + function table_exists($table_name, $no_prefix = false) + { + $result = $this->query('SELECT 1 FROM sqlite_master WHERE name = \''.($no_prefix ? '' : $this->prefix).$this->escape($table_name).'\' AND type=\'table\''); + return $this->num_rows($result) > 0; + } + + + function field_exists($table_name, $field_name, $no_prefix = false) + { + $result = $this->query('SELECT sql FROM sqlite_master WHERE name = \''.($no_prefix ? '' : $this->prefix).$this->escape($table_name).'\' AND type=\'table\''); + if (!$this->num_rows($result)) + return false; + + return preg_match('%[\r\n]'.preg_quote($field_name, '%').' %', $this->result($result)); + } + + + function index_exists($table_name, $index_name, $no_prefix = false) + { + $result = $this->query('SELECT 1 FROM sqlite_master WHERE tbl_name = \''.($no_prefix ? '' : $this->prefix).$this->escape($table_name).'\' AND name = \''.($no_prefix ? '' : $this->prefix).$this->escape($table_name).'_'.$this->escape($index_name).'\' AND type=\'index\''); + return $this->num_rows($result) > 0; + } + + + function create_table($table_name, $schema, $no_prefix = false) + { + if ($this->table_exists($table_name, $no_prefix)) + return true; + + $query = 'CREATE TABLE '.($no_prefix ? '' : $this->prefix).$table_name." (\n"; + + // Go through every schema element and add it to the query + foreach ($schema['FIELDS'] as $field_name => $field_data) + { + $field_data['datatype'] = preg_replace(array_keys($this->datatype_transformations), array_values($this->datatype_transformations), $field_data['datatype']); + + $query .= $field_name.' '.$field_data['datatype']; + + if (!$field_data['allow_null']) + $query .= ' NOT NULL'; + + if (isset($field_data['default'])) + $query .= ' DEFAULT '.$field_data['default']; + + $query .= ",\n"; + } + + // If we have a primary key, add it + if (isset($schema['PRIMARY KEY'])) + $query .= 'PRIMARY KEY ('.implode(',', $schema['PRIMARY KEY']).'),'."\n"; + + // Add unique keys + if (isset($schema['UNIQUE KEYS'])) + { + foreach ($schema['UNIQUE KEYS'] as $key_name => $key_fields) + $query .= 'UNIQUE ('.implode(',', $key_fields).'),'."\n"; + } + + // We remove the last two characters (a newline and a comma) and add on the ending + $query = substr($query, 0, strlen($query) - 2)."\n".')'; + + $result = $this->query($query) ? true : false; + + // Add indexes + if (isset($schema['INDEXES'])) + { + foreach ($schema['INDEXES'] as $index_name => $index_fields) + $result &= $this->add_index($table_name, $index_name, $index_fields, false, $no_prefix); + } + + return $result; + } + + + function drop_table($table_name, $no_prefix = false) + { + if (!$this->table_exists($table_name, $no_prefix)) + return true; + + return $this->query('DROP TABLE '.($no_prefix ? '' : $this->prefix).$this->escape($table_name)) ? true : false; + } + + + function rename_table($old_table, $new_table, $no_prefix = false) + { + // If the old table does not exist + if (!$this->table_exists($old_table, $no_prefix)) + return false; + // If the table names are the same + else if ($old_table == $new_table) + return true; + // If the new table already exists + else if ($this->table_exists($new_table, $no_prefix)) + return false; + + $table = $this->get_table_info($old_table, $no_prefix); + + // Create new table + $query = str_replace('CREATE TABLE '.($no_prefix ? '' : $this->prefix).$this->escape($old_table).' (', 'CREATE TABLE '.($no_prefix ? '' : $this->prefix).$this->escape($new_table).' (', $table['sql']); + $result = $this->query($query) ? true : false; + + // Recreate indexes + if (!empty($table['indices'])) + { + foreach ($table['indices'] as $cur_index) + { + $query = str_replace('CREATE INDEX '.($no_prefix ? '' : $this->prefix).$this->escape($old_table), 'CREATE INDEX '.($no_prefix ? '' : $this->prefix).$this->escape($new_table), $cur_index); + $query = str_replace('ON '.($no_prefix ? '' : $this->prefix).$this->escape($old_table), 'ON '.($no_prefix ? '' : $this->prefix).$this->escape($new_table), $query); + $result &= $this->query($query) ? true : false; + } + } + + // Copy content across + $result &= $this->query('INSERT INTO '.($no_prefix ? '' : $this->prefix).$this->escape($new_table).' SELECT * FROM '.($no_prefix ? '' : $this->prefix).$this->escape($old_table)) ? true : false; + + // Drop the old table if the new one exists + if ($this->table_exists($new_table, $no_prefix)) + $result &= $this->drop_table($old_table, $no_prefix); + + return $result; + } + + + function get_table_info($table_name, $no_prefix = false) + { + // Grab table info + $result = $this->query('SELECT sql FROM sqlite_master WHERE tbl_name = \''.($no_prefix ? '' : $this->prefix).$this->escape($table_name).'\' ORDER BY type DESC') or error('Unable to fetch table information', __FILE__, __LINE__, $this->error()); + $num_rows = $this->num_rows($result); + + if ($num_rows == 0) + return; + + $table = array(); + $table['indices'] = array(); + while ($cur_index = $this->fetch_assoc($result)) + { + if (empty($cur_index['sql'])) + continue; + + if (!isset($table['sql'])) + $table['sql'] = $cur_index['sql']; + else + $table['indices'][] = $cur_index['sql']; + } + + // Work out the columns in the table currently + $table_lines = explode("\n", $table['sql']); + $table['columns'] = array(); + foreach ($table_lines as $table_line) + { + $table_line = trim($table_line, " \t\n\r,"); // trim spaces, tabs, newlines, and commas + if (substr($table_line, 0, 12) == 'CREATE TABLE') + continue; + else if (substr($table_line, 0, 11) == 'PRIMARY KEY') + $table['primary_key'] = $table_line; + else if (substr($table_line, 0, 6) == 'UNIQUE') + $table['unique'] = $table_line; + else if (substr($table_line, 0, strpos($table_line, ' ')) != '') + $table['columns'][substr($table_line, 0, strpos($table_line, ' '))] = trim(substr($table_line, strpos($table_line, ' '))); + } + + return $table; + } + + + function add_field($table_name, $field_name, $field_type, $allow_null, $default_value = null, $after_field = null, $no_prefix = false) + { + if ($this->field_exists($table_name, $field_name, $no_prefix)) + return true; + + $table = $this->get_table_info($table_name, $no_prefix); + + // Create temp table + $now = time(); + $tmptable = str_replace('CREATE TABLE '.($no_prefix ? '' : $this->prefix).$this->escape($table_name).' (', 'CREATE TABLE '.($no_prefix ? '' : $this->prefix).$this->escape($table_name).'_t'.$now.' (', $table['sql']); + $result = $this->query($tmptable) ? true : false; + $result &= $this->query('INSERT INTO '.($no_prefix ? '' : $this->prefix).$this->escape($table_name).'_t'.$now.' SELECT * FROM '.($no_prefix ? '' : $this->prefix).$this->escape($table_name)) ? true : false; + + // Create new table sql + $field_type = preg_replace(array_keys($this->datatype_transformations), array_values($this->datatype_transformations), $field_type); + $query = $field_type; + + if (!$allow_null) + $query .= ' NOT NULL'; + + if (is_string($default_value)) + $default_value = '\''.$this->escape($default_value).'\''; + + if (!is_null($default_value)) + $query .= ' DEFAULT '.$default_value; + + $old_columns = array_keys($table['columns']); + + // Determine the proper offset + if (!is_null($after_field)) + $offset = array_search($after_field, array_keys($table['columns']), true) + 1; + else + $offset = count($table['columns']); + + // Out of bounds checks + if ($offset > count($table['columns'])) + $offset = count($table['columns']); + else if ($offset < 0) + $offset = 0; + + if (!is_null($field_name) && $field_name !== '') + $table['columns'] = array_merge(array_slice($table['columns'], 0, $offset), array($field_name => $query), array_slice($table['columns'], $offset)); + + $new_table = 'CREATE TABLE '.($no_prefix ? '' : $this->prefix).$this->escape($table_name).' ('; + + foreach ($table['columns'] as $cur_column => $column_details) + $new_table .= "\n".$cur_column.' '.$column_details.','; + + if (isset($table['unique'])) + $new_table .= "\n".$table['unique'].','; + + if (isset($table['primary_key'])) + $new_table .= "\n".$table['primary_key'].','; + + $new_table = trim($new_table, ',')."\n".');'; + + // Drop old table + $result &= $this->drop_table($table_name, $no_prefix); + + // Create new table + $result &= $this->query($new_table) ? true : false; + + // Recreate indexes + if (!empty($table['indices'])) + { + foreach ($table['indices'] as $cur_index) + $result &= $this->query($cur_index) ? true : false; + } + + // Copy content back + $result &= $this->query('INSERT INTO '.($no_prefix ? '' : $this->prefix).$this->escape($table_name).' ('.implode(', ', $old_columns).') SELECT * FROM '.($no_prefix ? '' : $this->prefix).$this->escape($table_name).'_t'.$now) ? true : false; + + // Drop temp table + $result &= $this->drop_table($table_name.'_t'.$now, $no_prefix); + + return $result; + } + + + function alter_field($table_name, $field_name, $field_type, $allow_null, $default_value = null, $after_field = null, $no_prefix = false) + { + // Unneeded for SQLite + return true; + } + + + function drop_field($table_name, $field_name, $no_prefix = false) + { + if (!$this->field_exists($table_name, $field_name, $no_prefix)) + return true; + + $table = $this->get_table_info($table_name, $no_prefix); + + // Create temp table + $now = time(); + $tmptable = str_replace('CREATE TABLE '.($no_prefix ? '' : $this->prefix).$this->escape($table_name).' (', 'CREATE TABLE '.($no_prefix ? '' : $this->prefix).$this->escape($table_name).'_t'.$now.' (', $table['sql']); + $result = $this->query($tmptable) ? true : false; + $result &= $this->query('INSERT INTO '.($no_prefix ? '' : $this->prefix).$this->escape($table_name).'_t'.$now.' SELECT * FROM '.($no_prefix ? '' : $this->prefix).$this->escape($table_name)) ? true : false; + + // Work out the columns we need to keep and the sql for the new table + unset($table['columns'][$field_name]); + $new_columns = array_keys($table['columns']); + + $new_table = 'CREATE TABLE '.($no_prefix ? '' : $this->prefix).$this->escape($table_name).' ('; + + foreach ($table['columns'] as $cur_column => $column_details) + $new_table .= "\n".$cur_column.' '.$column_details.','; + + if (isset($table['unique'])) + $new_table .= "\n".$table['unique'].','; + + if (isset($table['primary_key'])) + $new_table .= "\n".$table['primary_key'].','; + + $new_table = trim($new_table, ',')."\n".');'; + + // Drop old table + $result &= $this->drop_table($table_name, $no_prefix); + + // Create new table + $result &= $this->query($new_table) ? true : false; + + // Recreate indexes + if (!empty($table['indices'])) + { + foreach ($table['indices'] as $cur_index) + if (!preg_match('%$'.preg_quote($field_name, '%').'$%', $cur_index)) + $result &= $this->query($cur_index) ? true : false; + } + + // Copy content back + $result &= $this->query('INSERT INTO '.($no_prefix ? '' : $this->prefix).$this->escape($table_name).' SELECT '.implode(', ', $new_columns).' FROM '.($no_prefix ? '' : $this->prefix).$this->escape($table_name).'_t'.$now) ? true : false; + + // Drop temp table + $result &= $this->drop_table($table_name.'_t'.$now, $no_prefix); + + return $result; + } + + + function add_index($table_name, $index_name, $index_fields, $unique = false, $no_prefix = false) + { + if ($this->index_exists($table_name, $index_name, $no_prefix)) + return true; + + return $this->query('CREATE '.($unique ? 'UNIQUE ' : '').'INDEX '.($no_prefix ? '' : $this->prefix).$table_name.'_'.$index_name.' ON '.($no_prefix ? '' : $this->prefix).$table_name.'('.implode(',', $index_fields).')') ? true : false; + } + + + function drop_index($table_name, $index_name, $no_prefix = false) + { + if (!$this->index_exists($table_name, $index_name, $no_prefix)) + return true; + + return $this->query('DROP INDEX '.($no_prefix ? '' : $this->prefix).$table_name.'_'.$index_name) ? true : false; + } + + function truncate_table($table_name, $no_prefix = false) + { + return $this->query('DELETE FROM '.($no_prefix ? '' : $this->prefix).$table_name) ? true : false; + } +} -- cgit v1.2.3-54-g00ecf