<?php 
$op = isset($_GET['op']) && trim($_GET['op']) ? trim($_GET['op']) : exit('Operation can not be empty');
if (!preg_match('/([^a-z_]+)/i',$op) && file_exists('api/'.$op.'.php')) {
	include 'api/'.$op.'.php';
} else {
	exit('API handler does not exist');
}




?>