wordpress函数delete_transient()用法示例

delete_transient( string $transient )

Delete a transient.

描述

参数

$transient

(string)
(Required)
Transient name. Expected to not be SQL-escaped.

返回值

(bool) true if successful, false otherwise

源代码

File: wp-includes/option.php

function delete_transient( $transient ) {

	/**
	 * Fires immediately before a specific transient is deleted.
	 *
	 * The dynamic portion of the hook name, `$transient`, refers to the transient name.
	 *
	 * @since 3.0.0
	 *
	 * @param string $transient Transient name.
	 */
	do_action( "delete_transient_{$transient}", $transient );

	if ( wp_using_ext_object_cache() ) {
		$result = wp_cache_delete( $transient, 'transient' );
	} else {
		$option_timeout = '_transient_timeout_' . $transient;
		$option = '_transient_' . $transient;
		$result = delete_option( $option );
		if ( $result )
			delete_option( $option_timeout );
	}

	if ( $result ) {

		/**
		 * Fires after a transient is deleted.
		 *
		 * @since 3.0.0
		 *
		 * @param string $transient Deleted transient name.
		 */
		do_action( 'deleted_transient', $transient );
	}

	return $result;
}

更新日志

相关函数

Uses

• wp-includes/cache.php:
  wp_cache_delete()
• wp-includes/load.php:
  wp_using_ext_object_cache()
• wp-includes/plugin.php:
  do_action()
• wp-includes/option.php:
  deleted_transient
• wp-includes/option.php:
  delete_option()
• wp-includes/option.php:
  delete_transient_{$transient}

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Used By

• wp-admin/includes/file.php:
  _wp_handle_upload()
• wp-admin/includes/dashboard.php:
  wp_dashboard_rss_control()
• wp-admin/includes/template.php:
  get_settings_errors()
• wp-includes/class-wp-feed-cache-transient.php:
  WP_Feed_Cache_Transient::unlink()
• wp-includes/media.php:
  wp_maybe_generate_attachment_metadata()
• wp-includes/post.php:
  wp_delete_attachment()
• wp-includes/author-template.php:
  __clear_multi_author_cache()

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User Contributed Notes

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   Contributed by Codex

   Clearing our transient via the edit_term hook

   
   // Create a simple function to delete our transient
   function wpdocs_edit_term_delete_transient() {
        delete_transient( 'special_query_results' );
   }
   // Add the function to the edit_term hook so it runs when categories/tags are edited
   add_action( 'edit_term', 'wpdocs_edit_term_delete_transient' );