一个php curl 的例子

http://apistore.baidu.com/apiworks/servicedetail/632.html

<?php

$ch = curl_init();

$url = 'http://apis.baidu.com/txapi/weixin/wxhot?num=10&rand=1&word=%E7%9B%97%E5%A2%93%E7%AC%94%E8%AE%B0';

$header = array(

'apikey: 您自己的apikey',

);

// 添加apikey到header

curl_setopt($ch, CURLOPT_HTTPHEADER , $header);

curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);

// 执行HTTP请求

curl_setopt($ch , CURLOPT_URL , $url);

$res = curl_exec($ch);

var_dump(json_decode($res));

?>