php实现打包下载

$files   = [
    'https://farm6.staticflickr.com/5584/14985868676_b51baa4071_h.jpg',
    'https://farm6.staticflickr.com/5591/15008867125_68a8ed88cc_m.jpg'
];
$zipname = time(); 

$tmpFile = tempnam(storage_path(), ''); // 临时文件目录

$zip = new ZipArchive();
$zip->open($tmpFile, ZipArchive::CREATE);

foreach ($files as $file) {
    $fileContent = file_get_contents($file);
    $zip->addFromString(basename($file), $fileContent);
}
$zip->close();

header('Content-Type: application/zip');
header('Content-disposition: attachment; filename=' . $zipname . '.zip');
header('Content-Length: ' . filesize($tmpFile));
readfile($tmpFile);

unlink($tmpFile); // 删除临时文件