I've read this on codex and seem some themes use it but never understood how it worked.
(string) $hooknameused internally to track menu page callbacks for outputting the page inside theglobal $menuarray
I can't seem to understand the codex's explanation. Can some one enlighten me on how can we use the return value and what are the uses of it?
One important use is enqueue script / style only on specific plugin/admin pages.
<?php
add_action('init', 'my_plugin_admin_page');
function my_plugin_admin_page()
{
//create the menu page
$hook = add_menu_page(....);
//use the hook for this page for enqueuing
add_action('admin_print_styles-' . $hook, 'my_plugin_admin_styles');
}
function my_plugin_admin_styles()
{
//enqueue the style/script here
}
?>
This is one use I know.
admin_init.
Hope code is self-explanatory.
// Add a new submenu page and also add a load handler for it to process POSTs
($hook_name = add_submenu_page(
'plugins.php', // Under plugins menu
'Title',
'Menu',
'activate_plugins', // Administrators
'slug',
function(){ // Visual is here ?>
<div class="wrap">
<h2>Sub-Page Title</h2>
<!-- Subpage visual output comes here -->
</div>
<?php })) and (add_action("load-{$hook_name}", function(){ // Hook the load here
if(!strcasecmp($_SERVER['REQUEST_METHOD'], 'POST')){
$_POST = stripslashes_deep($_POST); // Fix this WP BS security joke
// Handle a POST request
// ... Do stuff with $_POST
}elseif(!strcasecmp($_SERVER['REQUEST_METHOD'], 'GET')){
// Handle a GET (normal) request
// ... Usually not needed
}
}));
Have fun!
version_compare() before the statement and in case switch to lambda functions. Anyway, there are much easier ways to do this (including readability & debugging/backtracing). +1 for the effort anyway :)
preg_match or similar and attach what you need again. Lots of effort which is IMHO often not worth it.