Activate / Deactivate Hooks in WordPress

Step 3

There are 3 Core Hooks in WordPress Plugin

• Register_activation_hook ();
• Register_deactivation_hook ();
• Register_uninstall_hook ();

But we can’t use Register_uninstall_hook () instead of this we create a new file with name uninstall. php within same folder

And write the below code to delete the plugin

<?php

Defined(‘ABSPATH’) || die Plugin deleted successfully “);

?>

Above 3 hooks has 2 parameter first is file name and second one is callback or anonymous function, while passing these parameters now plugin work smoothly as given below

<?php

/**

* Plugin Name: Shairy Plugin

* Author: Er. Shairy Kalra

* Author uri: https://ershairykalra.com/

* Version:1.0.0

* Description: This is the basic plugin to understand the functionality how a plugin is created

*/

if(!defined(‘ABSPATH’)):

die(“You can’t access this file directly”);

endif;

register_activation_hook(__FILE__,function(){

            add_option(‘updateTitle’,’This is Mine Title !’);

});

register_deactivation_hook(__FILE__,’deactivate_option’);

function deactivate_option(){

            delete_option(‘updateTitle’,’This is Mine Title !’);

}

?>

Now you can check from this URL; a new title is added on activation of plugin

http://localhost/shairy_portfolio/wp-admin/options.php