Home Backend Development PHP Tutorial PHP file_get_contents 函数超时的几种解决办法

PHP file_get_contents 函数超时的几种解决办法

Jun 13, 2016 pm 01:25 PM
context false file get

PHP file_get_contents 函数超时的几种解决方法

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在使用file_get_contents函数的时候,经常会出现超时的情况,在这里要通过查看一下错误提示,看看是哪种错误,比较常见的是读取超时,这种情况大家可以通过一些方法来尽量的避免或者解决。
这里就简单介绍两种:?
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: ?
$opts = array( 
‘http'=>array( 
‘method'=>”GET”, 
‘timeout'=>60, 
) 
); 
$context = stream_context_create($opts); 
$html =file_get_contents('http://www.example.com', false, $context); 
fpassthru($fp); 
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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 < 3 && ($str=@file_get_contents('http…'))===FALSE) $cnt++; 
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