php 根据URL下载远程图片、压缩包、pdf等文件到本地

 //远程路径，名称，文件后缀 function downImgRar($url,$rename,$ext){ switch ($ext) { case 'jpg':    //下载图片 $file_path = 'uploads/images/'; break; case 'png':    //下载图片 $file_path = 'uploads/images/'; break; case 'pdf':    //下载PDF $file_path = 'uploads/pdf/'; break; case 'rar':    //下载压缩包 $file_path = 'uploads/rar/'; break; case 'zip':    //下载压缩包 $file_path = 'uploads/rar/'; break; default: $file_path = 'uploads/files/'; break; } $ch = curl_init($url); curl_setopt($ch, CURLOPT_HEADER, 0); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_BINARYTRANSFER,1); $rawdata=curl_exec ($ch); curl_close ($ch); // 使用中文文件名需要转码 $fp = fopen($file_path.iconv('UTF-8', 'GBK', $rename).".".$ext,'w'); fwrite($fp, $rawdata); fclose($fp); // 返回路径 return $_SERVER['DOCUMENT_ROOT'].$file_path.$rename.".".$ext; }

 // 下载压缩包 function downRar($file_path) { $file_name = '/uploads/rar/2009323162920-维C银翘片说明书.rar'; $file_name = iconv("utf-8","gbk//IGNORE",$file_name); // 特别注意！特别注意！特别注意这里，windows下必须开转码,不然直接文件不存 $file_path = $_SERVER['DOCUMENT_ROOT'] . $file_name;// 比如windows下这里我的是 "D:/web/public/uploads/rar/2009323162920-维C银翘片说明书.rar" //判断如果文件存在,则跳转到下载路径 if (!file_exists($file_path)) { die("文件不存在!"); } $fp<a style="color:transparent">来源gao($daima.com搞@代@#码网</a> = fopen($file_path, "r+") or die('打开文件错误');  //下载文件必须要将文件先打开。写入内存 $file_size = filesize($file_path); //返回的文件流 Header("Content-type:application/octet-stream"); //按照字节格式返回 Header("Accept-Ranges:bytes"); //返回文件大小 Header("Accept-Length:" . $file_size); //弹出客户端对话框，对应的文件名 Header("Content-Disposition:attachment;filename=" . substr($file_name, strrpos($file_name, '/') + 1)); //防止服务器瞬间压力增大，分段读取 $buffer = 1024; while (!feof($fp)) { $file_data = fread($fp, $buffer); echo $file_data; } fclose($fp); die("下载成功!"); }