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:
<?php// create a new curl resource$ch = curl_init();
// set URL and other appropriate optionscurl_setopt($ch, CURLOPT_URL, 'http://www.example.com/');curl_setopt($ch, CURLOPT_HEADER, 0);
// grab URL and pass it to the browsercurl_exec($ch);
// close curl resource, and free up system resourcescurl_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;