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