drop_index( string $table, string $index )

Drops a specified index from a table.

Parameters Parameters


(string) (Required) Database table name.


(string) (Required) Index name to drop.

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Return Return

(true) True, when finished.

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Source Source

File: wp-admin/includes/upgrade.php

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


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

	// Now we need to take out all the extra ones we may have created.
	for ( $i = 0; $i < 25; $i++ ) {
		$wpdb->query( "ALTER TABLE `$table` DROP INDEX `{$index}_$i`" );


	return true;

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Changelog Changelog

Version Description
1.0.1 Introduced.

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