使用ZipArchive压缩目录

PHP
// increase script timeout value
ini_set('max_execution_time', 300);

// create object
$zip = new ZipArchive();

// open archive 
if ($zip-open('my-archive.zip', ZIPARCHIVE::CREATE) !== TRUE) {
    die ("Could not open archive");
}

// initialize an iterator
// pass it the directory to be processed
$iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator("app/"));

// iterate over the directory
// add each file found to the archive
foreach ($iterator as $key=>$value) {
    $zip->addFile(realpath($key), $key) or die ("ERROR: Could not add file: $key");        
}

// close and save archive
$zip->close();
echo "Archive created successfully.";    
?>