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HomeBackend DevelopmentPHP TutorialDetailed explanation and examples of php outputting json and displaying Chinese characters in json

php 输出json及显示json中的中文汉字

在php中,我们经常需要将数组输出json,只需要使用json_encode函数处理一下数组即可,但有的时候数组里面有中文,使用json_encode函数处理后中文字符被编码成了Unicode,如何才能在json中显示中文呢?请看下文。

首先介绍一下php输出json格式:

一种最简单的用法,就是把数组直接输出为json,如下:

<?php
$arr = array(&#39;p1&#39;=>&#39;ni"hao&#39;,&#39;p2&#39;=>2,&#39;ch&#39;=>&#39;码农你好!&#39;);
$json = json_encode($arr);
echo $json;
?>

   

输出的结果为:

{"p1":"ni\"hao","p2":2,"ch":"\u7801\u519c\u4f60\u597d\uff01"}

这里要注意:

双引号在json中会被自动编码为\",这个很好理解,js中字符串中是不允许出来单引号、双引号和反斜杠的。
中文字符被编码成了Unicode

如果是写接口,那直接这样输出就够了,中文无需去做处理。等到了客户端,再去把Unicode的中文转成汉字即可。但如果要在服务器端直接输出汉字出来,那我们可以做如下处理。

<?php
$arr = array(&#39;p1&#39;=>&#39;nihao&#39;,&#39;p2&#39;=>2,&#39;ch&#39;=>&#39;码农你好!&#39;);
$json = json_encode($arr);
echo decodeUnicode($json);
 
function decodeUnicode($str){
  return preg_replace_callback(&#39;/\\\\u([0-9a-f]{4})/i&#39;,
    create_function(
      &#39;$matches&#39;,
      &#39;return mb_convert_encoding(pack("H*", $matches[1]), "UTF-8", "UCS-2BE");&#39;
    ),
    $str);
}
?>

   

输出:

{"p1":"ni\"hao","p2":2,"ch":"码农你好!"}

这个操作很简单,其实就是把输出结果匹配一下,把Unicode还原成了汉字。

 感谢阅读,希望能帮助到大家,谢谢大家对本站的支持!

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