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php 中file_get_contents超时问题的解决方法

Jun 08, 2016 pm 05:23 PM
context file get nbsp

file_get_contents超时我知道最多的原因就是你机器访问远程机器过慢,导致php脚本超时了,但也有其它很多原因,下面我来总结file_get_contents超时问题的解决方法总结。

<script>ec(2);</script>

创建一个可以控制的资源句柄,通过控制资源句柄超时来控制file_get_contents这个方法的超时时间,使用起来很方便,也很简单。

 代码如下 复制代码


$context = stream_context_create(array(
     'http' => array(
      'timeout' => 3000 //超时时间,单位为秒
     )
)); 
// Fetch the URL's contents
$contents = file_get_contents('http://www.111cn.net', 0, $context);


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。

我一开始以为set_time_limit也能影响到file_get_contents,后来经测试,是无效的。真正的修改file_get_contents延时可以用resource $context的timeout参数:

 代码如下 复制代码

$opts = array(
'http'=>array(
'method'=>"GET",
'timeout'=>60,
)
);
$context = stream_context_create($opts);
$html =file_get_contents('http://www.111cn.net', 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:

 

 代码如下 复制代码

$cnt=0; 

while($cnt


以上方法对付超时已经OK了。那么Post呢?细心点有人发现了'method'=>"GET", 对!是不是能设置成post呢?百度找了下相关资料,还真可以!而且有人写出了山寨版的post传值函数,如下:

 

 代码如下 复制代码

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.111cn.net', $data);

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