searchjson

/**
 * @param $obj
 * @param $field
 * @param $value
 *
 * @return bool|null
 */
function searchJson($obj, $field, $value) {
  $item=NULL;
  foreach($obj as $struct) {
    if ($value == $struct->$field) {
      $item = $struct;
      return $item;
      break;
    }
  }
  return false;
}