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HomeBackend DevelopmentPHP TutorialPHP中json_encode 支持中文解决方法

在 php 中使用 json_encode() 内置函数(php > 5.2)可以使用得 php 中数据可以与其它语言很好的传递并且使用它。

这个函数的功能是将数值转换成json数据存储格式。

$arr= array
       (
          'Name'=>'悟空',
          'Age'=>5000
       );
  
$jsonencode= json_encode($arr);
echo$jsonencode;

程序运行结果如下:

{"Name":null,"Age":5000}

json_encode 函数中中文被编码成 null 了,Google 了一下,很简单,为了与前端紧密结合,Json 只支持utf-8 编码,我认为是前端的 Javascript 也是 utf-8 的原因。

$array= array
    (
        'title'=>iconv('gb2312','utf-8','这里是中文标题'),
        'body'=>'abcd...'
    );
  
echojson_encode($array);

这个程序的运行结果为:

{"title":"\u8fd9\u91cc\u662f\u4e2d\u6587\u6807\u9898","body":"abcd..."} 

数组中所有中文在json_encode之后都不见了或者出现\u2353等。

解决方法是用urlencode()函数处理以下,在json_encode之前,把所有数组内所有内容都用urlencode()处理一下,然用json_encode()转换成json字符串,最后再用urldecode()将编码过的中文转回来。

    /**************************************************************
     *
     *  使用特定function对数组中所有元素做处理
     *  @param  string  &$array     要处理的字符串
     *  @param  string  $function   要执行的函数
     *  @return   boolean $apply_to_keys_also     是否也应用到key上
     *  @access  public
     *
     *************************************************************/
    function arrayRecursive(&$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--;
    }
       
    /**************************************************************
     *
     *  将数组转换为JSON字符串(兼容中文)
     *  @param  array   $array      要转换的数组
     *  @return string      转换得到的json字符串
     *  @access public
     *
     *************************************************************/
    function JSON($array) {
        arrayRecursive($array, 'urlencode', true);
        $json = json_encode($array);
        return urldecode($json);
    }
     
    $array = array
           (
              'Name'=>'悟空,
              'Age'=>5000
           );
     
     
    echo JSON($array);

这次成功了,运行结果如下:

{"Name":"悟空","Age":"5000"}


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