PHP generated JSON problem

How PHP generates JSON does not do unioncode encoding conversion

For example in json $a = [' name ' = ' Zhang San ', ' age ' =>20]; after Json_encode ' Zhang San ' will become
'/u97asfddd/' Such a code, how can the ' Zhang San ' not be converted to '/u/' such a code?

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How PHP generates JSON does not do unioncode encoding conversion

For example in json $a = [' name ' = ' Zhang San ', ' age ' =>20]; after Json_encode ' Zhang San ' will become
'/u97asfddd/' Such a code, how can the ' Zhang San ' not be converted to '/u/' such a code?

Json_unescaped_unicode requires more than php5.4 version to be used

PHPfunction json_encode_wrapper ($result){    if(defined('JSON_UNESCAPED_UNICODE')){        return json_encode($result,JSON_UNESCAPED_UNICODE|JSON_NUMERIC_CHECK);    }else {        return preg_replace(            array("#\\\u([0-9a-f][0-9a-f][0-9a-f][0-9a-f])#ie", "/\"(\d+)\"/",),            array("iconv('UCS-2', 'UTF-8', pack('H4', '\\1'))", "\\1"),            json_encode($result)        );    }}

Http://php.net/json_encode

echo json_encode($arr, JSON_UNESCAPED_UNICODE);

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