//正确的
var_dump(json_last_error());//错误检查 返回 int
echo json_encode(array('error' => '0', 'message' => '没有错误')); 返回int
//这里也可以是json_decode
//错误码对照
0 JSON_ERROR_NONE
1 JSON_ERROR_DEPTH
2 JSON_ERROR_STATE_MISMATCH
3 JSON_ERROR_CTRL_CHAR
4 JSON_ERROR_SYNTAX
5 JSON_ERROR_UTF8   下面还是处理此 错误
6 JSON_ERROR_RECURSION
7 JSON_ERROR_INF_OR_NAN
8 JSON_ERROR_UNSUPPORTED_TYPE
<?php

$json = $json; //json 是一个有UTF-8 错误编码的array
echo JSONS($json);
function JSONS($array)
{
    arrayRecursive($array, 'urlencode', true);
    $json = json_encode($array);
    return urldecode($json);
}


function arrayRecursive(&$array, $function, $apply_to_keys_also = false)
{
    static $recursive_counter = 0;
    if (++$recursive_counter >1000 ) {
        die('possible deep recursion attack');
    }
    foreach ($array as $key => $value) {
        if (is_array($value)) {
            arrayRecursive($array[$key], $function, $apply_to_keys_also);
        } else {
            $array[$key] = $function($value);
        }
        if ($apply_to_keys_also && is_string($key)) {
            $new_key = $function($key);
            if ($new_key != $key) {
                $array[$new_key] = $array[$key];
                unset($array[$key]);
            }
        }
    }
    $recursive_counter--;
}

// $infos = json_decode($json);