drop_index

函数


drop_index ( $table, $index )
参数
  • (string)
    $table
    Database table name.
    Required:
  • (string)
    $index
    Index name to drop.
    Required:
返回值
  • (true) True, when finished.
定义位置
  • wp-admin/includes/upgrade.php
    , line 2490
引入
1.0.1
弃用

Drops a specified index from a table.

function drop_index( $table, $index ) {
	global $wpdb;

	$wpdb->hide_errors();

	$wpdb->query( "ALTER TABLE `$table` DROP INDEX `$index`" );

	// Now we need to take out all the extra ones we may have created.
	for ( $i = 0; $i query( "ALTER TABLE `$table` DROP INDEX `{$index}_$i`" );
	}

	$wpdb->show_errors();

	return true;
}