$zipname = ‘./file.zip‘;

$fileArr[0] = array(‘file_path‘ => ‘./index.php‘, ‘down_path‘ => ‘test/index.php‘);
$fileArr[1] = array(‘file_path‘ => ‘./index.html‘, ‘down_path‘ => ‘test/index.html‘);

//要使用该类，需要先启用 extension=php_zip.dll
$zip = new \ZipArchive ();
$res = $zip->open ( $zipname, \ZipArchive::CREATE );
if ($res === TRUE) {
    foreach ( $fileArr as $file ) {

        //这里将服务器上的文件添加到下载内容中，并重新赋值下载zip文件内该文件的路径
        $zip->addFile ( $file [‘file_path‘], $file [‘down_path‘] );
    }
}

$zip->close ();

header ( "Content-Type: application/zip" );
header ( "Content-Transfer-Encoding: Binary" );
header ( "Content-Length: " . filesize ( $zipname ) );
header ( "Content-Disposition: attachment; filename=\"" . basename ( $zipname ) . "\"" );

readfile ( $zipname );

//如不删除，则在服务器上会有 $zipname 这个zip文件
@unlink ( $zipname );