php zip archive functions

gistfile1.aw

<?php

function zip($sourceDir, $targetZipFileName)
{
    $zip = new ZipArchive();
    $zip->open($targetZipFileName, ZipArchive::CREATE);

    $iterator = new RecursiveIteratorIterator(new RecursiveDirectoryIterator($sourceDir));

    foreach ($iterator as $key => $value) {
        $zip->addFile(realpath($key), $key);
    }

    $zip->close();

    return $targetZipFileName;
}