wordpress did_action()函数

did_action()函数用来检索一个动作触发的次数。

使用方法

<?php did_action( $tag ); ?>

$tag

(string) (required) 动作名称，如：wp_head，wp_footer。Default: None

返回动作执行的次数。

例子：

使用did_action()函数,以确保添加的自定义元字段只在第一次运行,因为它可以运行很多次。

function my_sticky_option() 
{
	global $post;

	// if the post is a custom post type and only during the first execution of the action quick_edit_custom_box
	if ( $post->post_type == 'custom_post_type' && did_action( 'quick_edit_custom_box' ) === 1 ) 
	{ 
?>

	<fieldset class="inline-edit-col-right">
		<div class="inline-edit-col">
			<label class="alignleft">
				<input type="checkbox" name="sticky" value="sticky" />
				<span class="checkbox-title">
					<?php _e( 'Featured (sticky)', 'textdomain_string' ); ?>
				</span>
			</label>
		</div>
	</fieldset>
<?php
	} // endif;
}
// add the sticky option to the quick edit area
add_action( 'quick_edit_custom_box', 'my_sticky_option' );

Notes

• Uses global: (unknown type) $wp_actions

Change Log

Since: 2.1

Source File

did_action() is located in wp-includes/plugin.php.

文章参考翻译：https://codex.wordpress.org/Function_Reference/did_action