<?php 
$editId 
$_GET['deleteExtra'];
echo(
$editId);

        
$statement $LINK->prepare("DELETE FROM CineExtra WHERE pk_extra = ?");
        
$statement->bind_param('i'$editId);
        
$statement->execute();
        
$result $statement->get_result();
        
header('Location:?extra');
        exit();
?>