fixed get get params

utils.php

 
 function get_post($key, $is_error = true)
 {
-  get_param($_POST, $key, $is_error);
+  return get_param($_POST, $key, $is_error);
 }
 
 function get_get($key, $is_error = true)
 {
-  get_param($_GET, $key, $is_error);
+  return get_param($_GET, $key, $is_error);
 }
 
 function check_table_field($header, $table, $field)