PHP下载远程文件到指定目录

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<?php class Download {    public static function get($url, $file)    {       return file_put_contents($file, file_get_contents($url));    }        public static function curlGet($url, $file)    {       $ch = curl_init();       curl_setopt($ch, CURLOPT_POST, 0);        curl_setopt($ch,CURLOPT_URL,$url);        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);        $file_content = curl_exec($ch);       curl_close($ch);       $downloaded_file = fopen($file, 'w');       fwrite($downloaded_file, $file_content);       fclose($downloaded_file);    }        public static function openGet($url, $file)    {       $in = fopen($url, "rb");       $out = fopen($file, "wb");       while ($chunk = fread($in,8192))       {          fwrite($out, $chunk, 8192);       }       fclose($in);       fclose($out);    }        /**    *    * 创建目录，支持递归创建目录    * @param String $dirName 要创建的目录    * @param int $mode 目录权限    */    public static function smkdir($dirName , $mode = 0777) {      $dirs = explode('/' , str_replace('\\' , '/' , $dirName));      $dir = '';      foreach ($dirs as $part) {         $dir.=$part . '/';         if ( ! is_dir($dir) && strlen($dir) > 0) {            if ( ! mkdir($dir , $mode)) {               return false;            }            if ( ! chmod($dir , $mode)) {               return false;            }         }      }      return true;    } }

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