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深入php函数file_get_contents超时处理的方法详解_PHP

Jun 01, 2016 pm 12:07 PM
file_get_contents php

一.增加超时的时间限制
这里需要注意:set_time_limit只是设置你的PHP程序的超时时间,而不是file_get_contents函数读取URL的超时时间。真正的修改 file_get_contents延时可以用resource $context的timeout参数:
复制代码 代码如下:
$opts = array( 
    'http'=>array( 
        'method'=>"GET", 
        'timeout'=>60, 
    )  ); 
$context = stream_context_create($opts);       $html =file_get_contents('http://www.example.com', false, $context);

二、一次有延时的话那就多试几次
有时候失败是因为网络等因素造成,没有解决办法,但是可以修改程序,失败时重试几次,仍然失败就放弃,因为file_get_contents()如果失败将返回 FALSE,所以可以下面这样编写代码:
$cnt=0;
while($cnt 以上方法对付超时已经OK了。
有人发现了'method'=>”GET”,GET也可以设置成post,函数如下
复制代码 代码如下:
   function Post($url, $post = null)
   {
       $context = array();

      if (is_array($post)) {
          ksort($post);

           $context['http'] = array (
              'timeout'=>60,
              'method' => 'POST',
              'content' => http_build_query($post, '', '&'),
            );
      }

      return file_get_contents($url, false, stream_context_create($context));
   }

   $data = array (
       'name' => 'test',
       'email' => 'test@gmail.com',
       'submit' => 'submit',
   );

   echo Post('http://www.example.com', $data);

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