_doing_it_wrong()

💡 云策文档标注

概述

_doing_it_wrong() 是 WordPress 中用于标记函数被错误调用的内部函数，主要用于开发调试。当 WP_DEBUG 启用时，它会触发用户错误，并可通过钩子进行自定义处理。

关键要点

函数用于标识不正确调用，触发错误消息以辅助调试。
接受三个参数：$function_name（函数名）、$message（错误信息）、$version（WordPress 版本）。
提供 doing_it_wrong_run 钩子用于获取调用回溯，doing_it_wrong_trigger_error 过滤器控制是否触发错误。
错误触发条件为 WP_DEBUG 为 true 且过滤器返回 true，默认情况下会生成包含版本和文档链接的本地化消息。

代码示例

_doing_it_wrong( 'my_function', 'This function should not be called directly.', '6.0' );

注意事项

从 5.4.0 版本起，该函数不再标记为“私有”，可在开发中更广泛使用。
若 $version 参数设为 false，可省略版本号，适用于无版本号的私有项目。

📄 原文内容

Marks something as being incorrectly called.

Description

There is a ‘doing_it_wrong_run’ hook that will be called that can be used to get the backtrace up to what file and function called the deprecated function.

The current behavior is to trigger a user error if WP_DEBUG is true.

Parameters

$function_namestringrequired: The function that was called.
$messagestringrequired: A message explaining what has been done incorrectly.
$versionstringrequired: The version of WordPress where the message was added.

Source

function _doing_it_wrong( $function_name, $message, $version ) {

	/**
	 * Fires when the given function is being used incorrectly.
	 *
	 * @since 3.1.0
	 *
	 * @param string $function_name The function that was called.
	 * @param string $message       A message explaining what has been done incorrectly.
	 * @param string $version       The version of WordPress where the message was added.
	 */
	do_action( 'doing_it_wrong_run', $function_name, $message, $version );

	/**
	 * Filters whether to trigger an error for _doing_it_wrong() calls.
	 *
	 * @since 3.1.0
	 * @since 5.1.0 Added the $function_name, $message and $version parameters.
	 *
	 * @param bool   $trigger       Whether to trigger the error for _doing_it_wrong() calls. Default true.
	 * @param string $function_name The function that was called.
	 * @param string $message       A message explaining what has been done incorrectly.
	 * @param string $version       The version of WordPress where the message was added.
	 */
	if ( WP_DEBUG && apply_filters( 'doing_it_wrong_trigger_error', true, $function_name, $message, $version ) ) {
		if ( function_exists( '__' ) ) {
			if ( $version ) {
				/* translators: %s: Version number. */
				$version = sprintf( __( '(This message was added in version %s.)' ), $version );
			}

			$message .= ' ' . sprintf(
				/* translators: %s: Documentation URL. */
				__( 'Please see <a href="%s">Debugging in WordPress</a> for more information.' ),
				__( 'https://developer.wordpress.org/advanced-administration/debug/debug-wordpress/' )
			);

			$message = sprintf(
				/* translators: Developer debugging message. 1: PHP function name, 2: Explanatory message, 3: WordPress version number. */
				__( 'Function %1$s was called <strong>incorrectly</strong>. %2$s %3$s' ),
				$function_name,
				$message,
				$version
			);
		} else {
			if ( $version ) {
				$version = sprintf( '(This message was added in version %s.)', $version );
			}

			$message .= sprintf(
				' Please see <a href="%s">Debugging in WordPress</a> for more information.',
				'https://developer.wordpress.org/advanced-administration/debug/debug-wordpress/'
			);

			$message = sprintf(
				'Function %1$s was called <strong>incorrectly</strong>. %2$s %3$s',
				$function_name,
				$message,
				$version
			);
		}

		wp_trigger_error( '', $message );
	}
}

View all references View on Trac View on GitHub

Hooks

do_action( ‘doing_it_wrong_run’, string $function_name, string $message, string $version ): Fires when the given function is being used incorrectly.
apply_filters( ‘doing_it_wrong_trigger_error’, bool $trigger, string $function_name, string $message, string $version ): Filters whether to trigger an error for _doing_it_wrong() calls.

Uses	Description
wp_trigger_error()`wp-includes/functions.php`	Generates a user-level error/warning/notice/deprecation message.
__()`wp-includes/l10n.php`	Retrieves the translation of $text.
do_action()`wp-includes/plugin.php`	Calls the callback functions that have been added to an action hook.
apply_filters()`wp-includes/plugin.php`	Calls the callback functions that have been added to a filter hook.

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wp_delete_post()`wp-includes/post.php`	Trashes or deletes a post or page.
register_post_type()`wp-includes/post.php`	Registers a post type.
get_user_count()`wp-includes/user.php`	Returns the number of active users in your installation.
WP_Scripts::localize()`wp-includes/class-wp-scripts.php`	Localizes a script, only if the script has already been added.
register_nav_menus()`wp-includes/nav-menu.php`	Registers navigation menu locations for a theme.
wpdb::_real_escape()`wp-includes/class-wpdb.php`	Real escape using mysqli_real_escape_string().
wpdb::prepare()`wp-includes/class-wpdb.php`	Prepares a SQL query for safe execution.
the_widget()`wp-includes/widgets.php`	Outputs an arbitrary widget as a template tag.
register_sidebar()`wp-includes/widgets.php`	Builds the definition for a single sidebar and returns the ID.
register_meta()`wp-includes/meta.php`	Registers a meta key.

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Changelog

Version	Description
5.4.0	This function is no longer marked as “private”.
3.1.0	Introduced.

User Contributed Notes

Skip to note 2 content

Jamie Blomerus

12 months ago

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To omit the version number from the notice, set the parameter $version to false. Useful for private or internal projects, which may lack version numbers.

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_doing_it_wrong()

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关键要点

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函数文档

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