#json_encode_unicode php < 5.4 # function json_encode_unicode($data) { if (defined('JSON_UNESCAPED_UNICODE')) { return json_encode($data, JSON_UNESCAPED_UNICODE); } return preg_replace_callback('/(?<!\\\\)\\\\u([0-9a-f]{4})/i', function ($m) { $d = pack("H*", $m[1]); $r = mb_convert_encoding($d, "UTF8", "UTF-16BE"); return $r!=="?" && $r!=="" ? $r : $m[0]; }, json_encode($data) ); }