json_encode 不转义中文
json_encode($data, JSON_UNESCAPED_UNICODE)
Example:
$data = array('name'=>'小强');
var_dump(json_encode($data));
//string(23) "{"name":"\u5c0f\u5f3a"}"
var_dump(json_encode($data, JSON_UNESCAPED_UNICODE));
//string(17) "{"name":"小强"}"