maybe_drop_column( string $table_name, string $column_name, string $drop_ddl )
Drop column from database table, if it exists.
Description Description
Parameters Parameters
- $table_name
-
(string) (Required) Table name
- $column_name
-
(string) (Required) Column name
- $drop_ddl
-
(string) (Required) SQL statement to drop column.
Return Return
(bool) False on failure, true on success or doesn't exist.
Source Source
File: wp-admin/install-helper.php
function maybe_drop_column( $table_name, $column_name, $drop_ddl ) { global $wpdb; foreach ( $wpdb->get_col( "DESC $table_name", 0 ) as $column ) { if ( $column == $column_name ) { // Found it, so try to drop it. $wpdb->query( $drop_ddl ); // We cannot directly tell that whether this succeeded! foreach ( $wpdb->get_col( "DESC $table_name", 0 ) as $column ) { if ( $column == $column_name ) { return false; } } } } // Else didn't find it. return true; }
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Changelog Changelog
Version | Description |
---|---|
1.0.0 | Introduced. |