: Should be set to application/zip or application/octet-stream .
Implementing a allows you to bundle multiple files—such as images, documents, or logs—into a single compressed archive for easier user access. This process involves two main phases: creating the archive using the ZipArchive class and forcing the browser to download it using specific HTTP headers. 1. Creating the ZIP Archive
: Set to attachment with a specified filename to force the download. php zip file download
$zip = new ZipArchive(); $zipName = "my_archive.zip"; if ($zip->open($zipName, ZipArchive::CREATE | ZipArchive::OVERWRITE) === TRUE) // Add files: addFile($sourcePath, $localNameInZip) $zip->addFile('path/to/image.jpg', 'image.jpg'); $zip->addFile('path/to/report.pdf', 'report.pdf'); // You can also add content directly from a string $zip->addFromString('readme.txt', 'This archive was generated by PHP.'); $zip->close(); // Always close the archive to save it else exit("Failed to create the ZIP file."); Use code with caution. 2. Forcing the Download with HTTP Headers
PHP’s built-in ZipArchive class is the standard tool for creating archives. You must first instantiate the class and open a new file with the ZipArchive::CREATE flag. filename="' . basename($zipName) . '"')
if (file_exists($zipName)) header('Content-Type: application/zip'); header('Content-Disposition: attachment; filename="' . basename($zipName) . '"'); header('Content-Length: ' . filesize($zipName)); header('Pragma: no-cache'); header('Expires: 0'); // Clear the output buffer to avoid corrupting the zip with whitespace flush(); readfile($zipName); // Optional: Delete the file from the server after download unlink($zipName); exit; Use code with caution. 3. Advanced Use Cases Add remote file to zip - php - DaniWeb
Once the file exists on the server, you must send headers to the browser to prevent it from trying to "read" the file as text and instead trigger a "Save As" dialogue. The critical headers include: header('Content-Length: ' .
: Informs the browser of the file size for accurate progress bars.