The dynamic portion of the hook name, $hook_suffix, refers to the hook suffix for the admin page.
To use admin_head-hook_suffix action, you first need to register it using add_action. You can place this code into the functions.php of your activated theme or in a custom WordPress Plugin.
We at WePlugins always prefer to create a custom WordPress Plugin while using hooks so nothing breaks when you update your WordPress Theme in the future.
In the below live example, we have defined a function weplugins_execute_on_admin_head_hook_suffix_event and registered it using add_action. The first parameter admin_head-hook_suffix is the name of the hook, the second parameter weplugins_execute_on_admin_head_hook_suffix_event is the name of the function which needs to be called, the third parameter is the priority of calling the hook if the same hook is used multiple times, and the last parameter is the number of arguments (if any) to be passed to the registered function.
Sometimes, you have to remove a registered hook, so you can use remove_action to remove admin_head-hook_suffix action.
This example demonstrates how to add custom styles to the admin head.
add_action('admin_head-tools_page_myplugin/myplugin', 'weplugins_myplugin_adminhead');
function weplugins_myplugin_adminhead() {
// Output <head> content here, e.g.:
echo '<style type="text/css">'
.'/* Custom Styles */'
.'</style>';
}
Below is an example of how you can use this hook to execute custom code.
function weplugins_execute_on_admin_head_hook_suffix_event() {
// Your custom code here
}
// add the action
add_action("admin_head-hook_suffix", "weplugins_execute_on_admin_head_hook_suffix_event");
To remove a hook callback, use the example below.
remove_action("admin_head-hook_suffix", "weplugins_execute_on_admin_head_hook_suffix_event");
Please make sure to provide the same callback function name, priority, and number of arguments while removing the hook callback.
If you’re having any trouble using this hook, please contact our WordPress Development Team and we’d be happy to assist you.
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