maybe_drop_column( string $table_name, string $column_name, string $drop_ddl )

Drops column from database table, if it exists.


Parameters Parameters

$table_name

(string) (Required) Database table name.

$column_name

(string) (Required) Table column name.

$drop_ddl

(string) (Required) SQL statement to drop column.


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Return Return

(bool) True on success or if the column doesn't exist. False on failure.


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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

Changelog
Version Description
1.0.0 Introduced.

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