​php中file_get_contents和curl两个函数用法

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Release: 2016-06-20 13:02:18
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​php中file_get_contents和curl两个函数用法

文章简单的介绍了php中file_get_contents和curl两个函数用法,在不能使用file_get_contents时可以尝试一下curl函数,下面是file_get_contents和curl两个函数同样功能的不同写法.

file_get_contents函数的使用示例,代码如下:

$file_contents = file_get_contents('http://www.scutephp.com/'); 
echo $file_contents; 
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换成curl函数的使用示例,代码如下:

$ch = curl_init(); 
$timeout = 5; 
curl_setopt ($ch, CURLOPT_URL, 'http://www.scutephp.com'); 
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); 
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout); 
$file_contents = curl_exec($ch); 
curl_close($ch); 
echo $file_contents; 
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利用function_exists函数来判断php是否支持一个函数可以轻松写出下面函数,代码如下:

function vita_get_url_content($url) { 
 
if(function_exists('file_get_contents')) { 
 
$file_contents = file_get_contents($url); 
 
} else { 
 
$ch = curl_init(); 
 
$timeout = 5; 
 
curl_setopt ($ch, CURLOPT_URL, $url); 
 
curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); 
 
curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout); 
 
$file_contents = curl_exec($ch); 
 
curl_close($ch); 
 
} 
 
return $file_contents; 
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其实上面的这个函数还有待商议,如果你的主机服务商把file_get_contents和curl都关闭了,上面的函数就会出现错误.


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