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Homephp教程php手册file_get_contents和curl函数用法

file_get_contents和curl函数用法

Jun 13, 2016 am 10:36 AM
curlfilegetbutfunctionandapplicationusageSimple

file_get_contents ()应用很简单,但是有的服务器php.ini设置如果关闭allow_url_fopen,这个函数就失效了,一般个人服务器可以设置,但是如果是虚拟主机就不在自己掌控范围内了。但是curl 是另外一个打开远程页面的内容的函数用法如下:

// create a new curl resource
$ch = curl_init();

// set URL and other appropriate options
curl_setopt($ch, CURLOPT_URL, "http://www.example.com/");
curl_setopt($ch, CURLOPT_HEADER, 0);

// grab URL and pass it to the browser
curl_exec($ch);

// close curl resource, and free up system resources
curl_close($ch);
?>

当然此功能也有被关闭的可能。

使用以上2个方法可以使用function_exists()判断使用

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;
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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