download-zip.php

<?php

// imagine $imageIds is a get parameter with a comma seperated string of ID's
// Eample:  http://localhost/download-zip?images=1,2,3,4

Route::get("/download-zip", function ($images) {

    $imageIds = explode(",", $images);

    // This is an eloquent model
    $images = Images::find($imageIds);
    
    if (!$images) {
        return Response::make("No images found", 404);
    }
    
    
    $zipFileName = tempnam("tmp", "zip");


    // Open zip file
    $zip = (new ZipArchive())->open($zipFileName;, ZipArchive::OVERWRITE); 

    // Add each file
    foreach ($images as $image) {
        $zip->addFromString(image->filename, base64_decode($$image->base64_string));   
    }

    // Close the file
    $zip->close();

    // Return the file response
    return response()->file($zipFileName);
});