Runs when an administration menu page is loaded. This action is not usually added directly -- see Administration Menus for more details of how to add admin menus. If you do want to use it directly, the return value from add_options_page and similar functions gives you the (page) part of the action name.
Example:
add_action( 'admin_menu', 'test_load');
function test_load() {
$hook = add_management_page( 'Test', 'Test', 8, 'testload');
print('load-'.$hook);exit;
/*
Result: load-tools_page_testload
*/
}
Example:
add_action( 'load-edit.php', 'post_listing_page' );
function post_listing_page() {
//this is the wp admin edit.php post listing page!
}
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