将多个图像下载到zip中

Question

I am trying to add functionality to my website where users can download multiple image files via a single .zip folder. Currently I have this code executing but when i open the downloaded zip file it extracts another zip file my-archive (3) 2.zip.cpgz and every time I try to open it, it extracts yet another zip file.

Here is my basic code using php native zip feature.

$image1 = "http://cdn.screenrant.com/wp-content/uploads/Darth-Vader-voiced-by-Arnold-Schwarzenegger.jpg";
$image2 = "http://cdn.screenrant.com/wp-content/uploads/Star-Wars-Logo-Art.jpg";

$files = array($image1, $image2);
$zipname = 'file.zip';
$zip = new ZipArchive;
$zip->open($zipname, ZipArchive::CREATE);
foreach ($files as $file) {
    $zip->addFile($file);
}
$zip->close();

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

EDIT

I am trying hard to get the provided answer to work. I just tried the most recent edit and got this error

]

Answer 1

You should download external files and then archive them.

$image1 = "http://cdn.screenrant.com/wp-content/uploads/Darth-Vader-voiced-by-Arnold-Schwarzenegger.jpg";
$image2 = "http://cdn.screenrant.com/wp-content/uploads/Star-Wars-Logo-Art.jpg";

$files = array($image1, $image2);

$tmpFile = tempnam('/tmp', '');

$zip = new ZipArchive;
$zip->open($tmpFile, ZipArchive::CREATE);
foreach ($files as $file) {
    // download file
    $fileContent = file_get_contents($file);

    $zip->addFromString(basename($file), $fileContent);
}
$zip->close();

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

unlink($tmpFile);

In example above I used file_get_contents function, so please enable allow_url_fopen or use curl to download the files.