connect_error ) { die_500( "Connection failed: " . $mysql -> connect_error ); } function mysql_run_query($query) { global $mysql; if ( ! $result = $mysql -> query($query) ) die_500( "Query failed: " . $mysql -> error ); return $result; } function show_warning_on_offline_slave() { $result = mysql_run_query("SHOW STATUS LIKE \"Slave_running\""); if (($result -> num_rows == 0) || ($result -> fetch_assoc() ["Value"] != "ON")) { print "

The replication slave is currently not running. The database might be outdated.

"; } }