这是从wp-admin/admin.php 文件并在admin_init 行动

以下是核心屏幕部分的内联文档：

/**
 * Fires before a particular screen is loaded.
 *
 * The load-* hook fires in a number of contexts. This hook is for core screens.
 *
 * The dynamic portion of the hook name, `$pagenow`, is a global variable
 * referring to the filename of the current page, such as \'admin.php\',
 * \'post-new.php\' etc. A complete hook for the latter would be
 * \'load-post-new.php\'.
 *
 * @since 2.1.0
 */
 do_action( "load-{$pagenow}" );

然后，我们可以检查是否已使用以下工具启动：

did_action( \'load-customize.php\' );

检查code reference 有关的详细信息did_action().

另一个例子是wp-admin/edit.php 以及相应的load-edit.php 行动