PHP实现打包下载文件的方法示例

本文实例讲述了PHP实现打包下载文件的方法。分享给大家供大家参考，具体如下：/***下载

本文实例讲述了PHP实现打包下载文件的方法。分享给大家供大家参考，具体如下：

/**
* 下载文件
* @param $img
* @return string
*/
public function Download($img)
{
 $items = [];
 $names = [];
 if($img)
 {
 //用于前端跳转zip链接拼接
 $path_redirect = '/zip/'.date('Ymd');
 //临时文件存储地址
 $path = '/tmp'.$path_redirect;
 if(!is_dir($path))
 {
 mkdir($path, 0777,true);
 }
 foreach ($img as $key => $value) {
 $fileContent = '';
 $fileContent = $this->CurlDownload($value['url']);
 if( $fileContent )
 {
 $__tmp = $this->SaveFile( $value['url'] , $path , $fileContent );
 $items[] = $__tmp[0];
 $names[] = $value['name'].'_'.($key+1).'.'.$__tmp[1];
 }
 }
 if( $items )
 {
 $zip = new ZipArchive();
 $filename = time().'download.zip';
 $zipname = $path.'/'.$filename;
 if (!file_exists($zipname)) {
 $res = $zip->open($zipname, ZipArchive::CREATE | ZipArchive::OVERWRITE);
 if ($res) {
 foreach ($items as $k => $v) {
 $value = explode("/", $v);
 $end = end($value);
 $zip->addFile($v, $end);
 $zip->renameName($end, $names[$k]);
 }
 $zip->close();
 } else {
 return '';
 }
 //通过前端js跳转zip地址下载,让不使用php代码下载zip文件
 //if (file_exists($zipname)) {
 //拼接附件地址
 //$redirect = 域名.$path_redirect.'/'.$filename;
 //return $redirect;
 //header("Location:".$redirect);
 //}
 //直接写文件的方式下载到客户端
 if (file_exists($zipname)) {
 header("Cache-Control: public");
 header("Content-Description: File Transfer");
 header('Content-disposition: attachment; filename=附件.zip'); //文件名
 header("Content-Type: application/zip"); //zip格式的
 header("Content-Transfer-Encoding: binary"); //告诉浏览器，这是二进制文件
 header('Content-Length: ' . filesize($zipname)); //告诉浏览器，文件大小
 @readfile($zipname);
 }
 //删除临时文件
 @unlink($zipname);
 }
 }
 return '';
 }
}
/**
* curl获取链接内容
* @param $url
* @return mixed|string
*/
public function CurlDownload($url) {
 $ch = curl_init($url);
 curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4);
 curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
 curl_setopt($ch, CURLOPT_HEADER, 0);
 curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 20);
 curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
 curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
 $errno = curl_errno($ch);
 $error = curl_error($ch);
 $res=curl_exec($ch);
 curl_close($ch);
 if($errno>0){
 return '';
 }
 return $res;
}
/**
* 保存临时文件
* @param $url
* @param $dir
* @param $content
* @return array
*/
public function SaveFile( $url ,$dir , $content)
{
 $fname = basename($url); //返回路径中的文件名部分
 $str_name = pathinfo($fname); //以数组的形式返回文件路径的信息
 $extname = strtolower($str_name['extension']); //把扩展名转换成小写
 $path = $dir.'/'.md5($url).$extname;
 $fp = fopen( $path ,'w+' );
 fwrite( $fp , $content );
 fclose($fp);
 return array( $path , $extname) ;
}

引用：

$img = [['url'=>'地址url/1.jpg','name'=>'名字']];
Download($img);