PHP下载远程文件到指定目录

PHP用curl可以轻松实现下载远程文件到指定目录：

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<?phpclass 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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