Okay, new solution. First off, I’d recommend making the link a submit button and making the name something unique:
<submit name 'del_gallery' />
Then in the code of your admin page:
include 'ga-functions.php';
//checks to see if certain button was pressed
if(isset($_REQUEST['del_gallery'] && isset($_GET['gallery_id']) ) {
$gallery_id = $_GET['gallery_id'];
delete_gallery($gallery_id);
wp_redirect( $_SERVER['HTTP_REFERER'] );
exit();
}
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