/**

 * 发送post请求

 * @param string $url 请求地址

 * @param array $post_data post键值对数据

 * @return string

 */

function send_post($url, $post_data) { 

  $postdata = http_build_query($post_data);

  $options = array(

    ‘http’ => array(

      ‘method’ => ‘POST’,

     ‘header’ => ‘Content-type:application/x-www-form-urlencoded’,

     ‘content’ => $postdata,

      ‘timeout’ => 15 * 60 // 超时时间(单位:s)

    )

  );

  $context = stream_context_create($options);

  $result = file_get_contents($url, false, $context);

  return $result;

}  

 

//使用方法

$post_data = array(

  ‘username’ => ‘stclair2201’,

  ‘password’ => ‘handan’

);

send_post(‘http://www.jb51.net’, $post_data);