delete_option( string $option )
按名称删除选项。防止删除受保护的WordPress选项。
Removes option by name. Prevents removal of protected WordPress options.
目录锚点:#参数#返回#源码#笔记
参数 | 类型 | 必填 | 说明 |
$option |
(string) |
必需 |
要删除的选项的名称。应为非SQL转义。 |
(bool)如果成功删除选项,则为True。失败时为False。
/**
* Removes option by name. Prevents removal of protected WordPress options.
*
* @since 1.2.0
*
* @global wpdb $wpdb
*
* @param string $option Name of option to remove. Expected to not be SQL-escaped.
* @return bool True, if option is successfully deleted. False on failure.
*/
function delete_option( $option ) {
global $wpdb;
$option = trim( $option );
if ( empty( $option ) )
return false;
wp_protect_special_option( $option );
// Get the ID, if no ID then return
$row = $wpdb->get_row( $wpdb->prepare( "SELECT autoload FROM $wpdb->options WHERE option_name = %s", $option ) );
if ( is_null( $row ) )
return false;
/**
* Fires immediately before an option is deleted.
*
* @since 2.9.0
*
* @param string $option Name of the option to delete.
*/
do_action( 'delete_option', $option );
$result = $wpdb->delete( $wpdb->options, array( 'option_name' => $option ) );
if ( ! defined( 'WP_INSTALLING' ) ) {
if ( 'yes' == $row->autoload ) {
$alloptions = wp_load_alloptions();
if ( is_array( $alloptions ) && isset( $alloptions[$option] ) ) {
unset( $alloptions[$option] );
wp_cache_set( 'alloptions', $alloptions, 'options' );
}
} else {
wp_cache_delete( $option, 'options' );
}
}
if ( $result ) {
/**
* Fires after a specific option has been deleted.
*
* The dynamic portion of the hook name, `$option`, refers to the option name.
*
* @since 3.0.0
*
* @param string $option Name of the deleted option.
*/
do_action( "delete_option_$option", $option );
/**
* Fires after an option has been deleted.
*
* @since 2.9.0
*
* @param string $option Name of the deleted option.
*/
do_action( 'deleted_option', $option );
return true;
}
return false;
}
更新版本 |
源码位置 |
使用 |
被使用 |
1.2.0 |
wp-includes/option.php:561 |
23 |
12 |
删除单个选项
如果要删除所有设置,请关闭插件。
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