分享片段用Intervention\Image处理图片，批量循环改变成webp格式。

<?php

// include composer autoload
require 'vendor/autoload.php';

use Intervention\Image\ImageManager;

$manager = new ImageManager();
/**
 * 根据指定的目录循环遍历里面的图片文件转换成webp格式并删除原始文件
 * @param $path
 * @param $manager
 * @return void
 * @throws Exception
 * */

function convertToWebP($path, $manager)
{
    try {
        $files = scandir($path . '/');
        foreach ($files as $file) {
            if ($file === '.' || $file === '..') {
                continue;
            }
            $filePath = $path . '/' . $file;
            if (is_file($filePath)) {
                $extension = strtolower(pathinfo($filePath, PATHINFO_EXTENSION));
                if (in_array($extension, ['jpg', 'jpeg', 'png'])) {
                    $webpPath = $path . '/' . pathinfo($filePath, PATHINFO_FILENAME) . '.webp';
                    $manager->make($filePath)->encode('webp')->save($webpPath);
                    if (unlink($filePath)) {
                        echo "已删除文件" . $filePath . "\n";
                    } else {
                        echo $filePath . "文件删除失败\n";
                    }
                    echo $webpPath . "\n";
                }
            } elseif (is_dir($filePath)) {
                convertToWebP($filePath, $manager);
            }
        }
    } catch (Exception $e) {
        echo $e->getMessage();
    }
}

$dir = 'd:/web/img';
convertToWebP($dir, $manager);