php http_build_query stream_context_create post请求

 1 <?php
 2 function send_post($url, $post_data)
 3 {
 4     $postdata = http_build_query($post_data);
 5     $options = array(
 6         'http' => array(
 7             'method' => 'POST',
 8             'header' => 'Content-type:application/x-www-form-urlencoded',
 9             'content' => $postdata,
10             'timeout' => 15 * 60 // 超时时间（单位:s）
11         )
12     );
13     $context = stream_context_create($options);
14     $result = file_get_contents($url, false, $context);
15 
16     echo $result;
17 }
18 
19 //使用方法
20 $post_data = array(
21     'a' => '11',
22     'b' => '22'
23 );
24 send_post('http://localhost/b.php', $post_data);