下载文件到本地.php

/**
 *$url = 'http://wx.qlogo.cn/mmopen/xu0fLo9waqKSTDO7j0kSO41O5Luq3LB6ozUvY4O7OsXUWNicB49fBs8nGYzoqcwGDARQZHpVuic4JSDngEVjVo10BoiaPd0iciaOb/0';
 *$a = curl_file_get_contents($url);
 *file_put_contents('uploads/2.jpg', $a);
 */
function curl_file_get_contents($durl){
   $ch = curl_init();
   curl_setopt($ch, CURLOPT_URL, $durl);
   curl_setopt($ch, CURLOPT_TIMEOUT, 2);
   curl_setopt($ch, CURLOPT_USERAGENT, _USERAGENT_);
   curl_setopt($ch, CURLOPT_REFERER,_REFERER_);
   curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
   $r = curl_exec($ch);
   curl_close($ch);
   return $r;
 }