php4的json类库及示例
json一种轻量级的数据格式，这个格式的数据可以很容易的被转换为javascript对象的格式，用于服务器端和客户端的数据传递，用于解决xml的过多冗余标签造成数据传输量过大的问题。然而php4没有直接处理json的方法。
JSON-PHP是一个自动完成JSON编码和解码的php开源代码工具。
下载：http://www.eb163.com/code/json.rar
其中的TEST_JSON.php中包含了PHPUnit.php，是PEAR自带的单元测试工具，实际开发中可以不用。
示例代码:
<?
//create a new instance of Services_JSON
require_once('JSON.php');
$json = new Services_JSON();
// convert a complex value to JSON notation
$value = array('name'=>'luoch','age'=> 25,'data'=>'foo');
$output = $json->encode($value);
print($output);
//采用post方式发送数据： json={"name":'luoch',"age":25,"data":"foo"}
print($_REQUEST['json']);
$value= $json->decode(str_replace('\\','',$_REQUEST["json"]));
var_dump( $value);
echo "<br>".$value->data;
?>
注意:如果中文无法显示,请将编码改为UTF-8
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