<?php function getFile($url, $save_dir = '', $filename = '', $type = 0) { if (trim($url) == '') { return false; } if (trim($save_dir) == '') { $save_dir = './'; } if (0 !== strrpos($save_dir, '/')) { $save_dir.= '/'; } //创建保存目录 if (!file_exists($save_dir) && !mkdir($save_dir, 0777, true)) { return false; } //获取远程文件所采用的方法 if ($type) { $ch = curl_init(); $timeout = 5; curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, $timeout); $content = curl_exec($ch); curl_close($ch); } else { ob_start(); readfile($url); $content = ob_get_contents(); ob_end_clean(); } $size = strlen($content); //文件大小 $fp2 = @fopen($save_dir . $filename, 'a'); fwrite($fp2, $content); fclose($fp2); unset($content, $url); return array( 'file_name' => $filename, 'save_path' => $save_dir . $filename ); } $url = "http://www.baidu.com/img/baidu_jgylogo3.gif"; $save_dir = "down/"; $filename = "test.gif"; $res = getFile($url, $save_dir, $filename, 1); var_dump($res); ?>