Do WordPress Core Filenames Work as Hooks?

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This is in reference to another answer here on wordpress.stackexchange. The answerer used the filename as the hook to enqueue scripts and styles to certain pages.

add_action( 'admin_print_scripts-post-new.php', 'portfolio_admin_script', 11 );
add_action( 'admin_print_scripts-post.php', 'portfolio_admin_script', 11 );

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The short answer is ‘yes’.

Taken from this article the suffix of those ‘screen specific hooks’ is given by:

  • For custom admin pages added via add_menu_page() – including settings pages – (and related functions) it is the screen ID (the value returned by add_menu_page())
  • For the admin page listing posts of any post type, it is edit.php
  • On the ‘add new’ page of any post type, it is post-new.php
  • On the edit page of any post type, it is post.php
  • For taxonomy pages it is edit-tags.php

You may find this plug-in useful, developed by @Kaiser, based on the article linked to above.

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