如何从文件夹创建zip文件- php

<?php
function createZipFromFolder($folderPath, $zipPath) {
    $zip = new ZipArchive();
    if ($zip->open($zipPath, ZipArchive::CREATE | ZipArchive::OVERWRITE) === true) {
        $files = scandir($folderPath);
        foreach ($files as $file) {
            if ($file != '.' && $file != '..') {
                $filePath = $folderPath . '/' . $file;
                if (is_dir($filePath)) {
                    addFolderToZip($zip, $filePath, $file);
                } else {
                    $zip->addFile($filePath, $file);
                }
            }
        }
        $zip->close();
        echo 'Zip file created successfully.';
    } else {
        echo 'Failed to create zip file.';
    }
}

function addFolderToZip($zip, $folderPath, $folderName) {
    $zip->addEmptyDir($folderName);
    $files = scandir($folderPath);
    foreach ($files as $file) {
        if ($file != '.' && $file != '..') {
            $filePath = $folderPath . '/' . $file;
            if (is_dir($filePath)) {
                addFolderToZip($zip, $filePath, $folderName . '/' . $file);
            } else {
                $zip->addFile($filePath, $folderName . '/' . $file);
            }
        }
    }
}

$folderPath = '/path/to/folder';
$zipPath = '/path/to/zipfile.zip';
createZipFromFolder($folderPath, $zipPath);
?>