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; }}
