有没有办法返回PHP`json_encode`编码UTF-8而不是Unicode？

Any way to return PHP json_encode with encode UTF-8 and not Unicode?

$arr=array('a'=>'á');
echo json_encode($arr);

mb_internal_encoding('UTF-8');and $arr=array_map('utf8_encode',$arr); does not fix it.

Result: {"a":"\u00e1"}

Expected result: {"a":"á"}

{"a":"\u00e1"} and {"a":"á"} are different ways to write the same JSON document; The JSON decoder will decode the unicode escape.

In php 5.4+, php's json_encode does have the JSON_UNESCAPED_UNICODE option for plain output. On older php versions, you can roll out your own JSON encoder that does not encode non-ASCII characters, or use Pear's JSON encoder and remove line 349 to 433.

I resolved my problem doing this:

• The .php file is encoded to ANSI. In this file is the function to create the .json file.
• I use json_encode($array, JSON_UNESCAPED_UNICODE) to encode the data;

The result is a .json file encoded to ANSI as UTF-8.

This function found here, works fine for me

function jsonRemoveUnicodeSequences($struct) {
   return preg_replace("/\\\\u([a-f0-9]{4})/e", "iconv('UCS-4LE','UTF-8',pack('V', hexdec('U$1')))", json_encode($struct));
}

just use this,

utf8_encode($string);

you've to replace your $arr with $string.

I think it will work...try this.

Use JSON_UNESCAPED_UNICODE inside json_encode() if your php version >=5.4.