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

Question

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"}

Answer 1

{"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.