register_activation_hook does NOTHING!

  • How hard can it be? If I activate my plugin called testing.php OR deactivate my plugin it should print “DO SOMETHING!!!”. It does nothing. Why not? What did I miss?

    <?php
/*
Plugin Name: My test
Plugin URI: https://www.jenst.se
Description: My little test
Version: 1
Author: Jens T&ouml;rnell
Author URI: https://www.jenst.se
*/

register_activation_hook(__FILE__, 'testing_activate' );
register_deactivation_hook(__FILE__, 'testing_activate');

function testing_activate()
{
	echo 'DO SOMETHING!!!';
}
?>
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