PHP json 类型
有时候需要用json的格式返回数据，json是一个很常用的数据传输方式。下面是一个最简单的例子。就是说只需要设置一下文档类型是 json 的就可以了。
<?phpheader ('Content-Type: application/json; charset=UTF-8');$s = array('1'=>'hello world','2'=>'linux world');$show = json_encode($s);echo $show;?>用浏览器访问的效果就会像上面这样子。当然，需要浏览器安装jsonviewr插件。由于chrome 商店老是上不了，所以能不能装上这个插件还需要看脸。如果碰巧上去了，那就好办了，在商店里搜jsonview就可以了。不好意思，我又上去了。
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