public static function checkTextDataFields($textData) { $i = 0; $field_names = array(); foreach ($textData as $data) { if ($i == 0) { $field_names = SpatialFileMethods::checkTextDataFieldNames($data); } else { $field_names = SpatialFileMethods::checkTextDataEachRowType($data, $field_names); } $i = $i + 1; } return $field_names; }