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);

希望本文所述对大家PHP程序设计有所帮助。