153 lines
4.9 KiB
PHP
153 lines
4.9 KiB
PHP
<?php
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namespace App\Console\Commands;
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use Illuminate\Console\Command;
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use Illuminate\Support\Facades\Storage;
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use App\Service\ImageService;
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class OptimizeImageCompression extends Command
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{
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protected $signature = 'images:optimize-compression
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{--max-size=1024 : 目标最大文件大小 (KB)}
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{--quality=85 : 初始压缩质量}
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{--min-quality=40 : 最低压缩质量}
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{--max-iterations=10 : 最大压缩次数}';
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protected $description = '优化压缩目录下的图片，压缩到指定大小以下';
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public function handle()
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{
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// 不限制内存
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ini_set('memory_limit', -1);
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$disk = Storage::disk('public');
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$directory = 'images/compressed';
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$maxSizeKB = (int)$this->option('max-size');
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$maxSizeBytes = $maxSizeKB * 1024;
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$this->info("正在优化 {$directory} 目录下的图片...");
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$this->info("目标文件大小: {$maxSizeKB}KB");
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$images = $disk->allFiles($directory);
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$total = count($images);
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$count = 0;
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$progressBar = $this->output->createProgressBar($total);
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$progressBar->start();
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foreach ($images as $imagePath) {
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$originalSize = $disk->size($imagePath);
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$fileExtension = pathinfo($imagePath, PATHINFO_EXTENSION);
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// 只处理WEBP格式文件
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if (strtolower($fileExtension) !== 'webp') {
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$this->warn("跳过非WEBP文件: $imagePath");
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$progressBar->advance();
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continue;
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}
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// 如果已经小于目标大小，则跳过
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if ($originalSize <= $maxSizeBytes) {
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$progressBar->advance();
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continue;
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}
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// 获取文件的绝对路径
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$filePath = $disk->path($imagePath);
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// 创建压缩实例
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$imageService = app(ImageService::class);
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$tempPath = storage_path('app/temp/'.basename($imagePath));
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// 创建目标目录
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if (!file_exists(dirname($tempPath))) {
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mkdir(dirname($tempPath), 0755, true);
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}
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// 多轮压缩策略
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$currentSize = $originalSize;
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$iterations = 0;
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$currentQuality = (int)$this->option('quality');
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$minQuality = (int)$this->option('min-quality');
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$maxIterations = (int)$this->option('max-iterations');
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while ($currentSize > $maxSizeBytes && $iterations < $maxIterations && $currentQuality >= $minQuality) {
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// 使用服务类进行压缩
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$optimizedContent = $this->recompressImage(
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$filePath,
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$currentQuality
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);
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file_put_contents($tempPath, $optimizedContent);
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$newSize = filesize($tempPath);
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// 如果新文件大小没有减小，则停止优化
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if ($newSize >= $currentSize) {
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$this->warn("无法进一步压缩: $imagePath (质量: $currentQuality)");
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break;
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}
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$currentSize = $newSize;
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$iterations++;
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// 降低质量进行下一轮尝试
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if ($currentSize > $maxSizeBytes) {
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$currentQuality -= 5;
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}
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}
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// 替换原始文件
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if ($currentSize < $originalSize) {
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rename($tempPath, $filePath);
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$this->info("优化成功: $imagePath 从 {$this->formatBytes($originalSize)} 压缩到 {$this->formatBytes($currentSize)}");
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} else {
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@unlink($tempPath);
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$this->warn("压缩失败: $imagePath 无法达到目标大小");
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}
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$progressBar->advance();
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$count++;
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}
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$progressBar->finish();
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$this->info("\n{$count}/{$total} 个图片已优化完成");
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}
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/**
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* 重新压缩图片
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*/
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protected function recompressImage($filePath, $quality)
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{
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// 读取原始图片
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$image = imagecreatefromwebp($filePath);
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// 捕捉错误
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if (!$image) {
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throw new \Exception("无法读取图片: $filePath");
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}
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// 捕捉输出
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ob_start();
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$success = imagewebp($image, null, $quality);
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if (!$success) {
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throw new \Exception("压缩失败: $filePath");
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}
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$compressedContent = ob_get_clean();
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imagedestroy($image);
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return $compressedContent;
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}
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/**
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* 格式化字节大小
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*/
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protected function formatBytes($bytes)
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{
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if ($bytes < 1024) return $bytes . 'B';
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if ($bytes < 1048576) return round($bytes / 1024, 1) . 'KB';
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return round($bytes / 1048576, 1) . 'MB';
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}
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}
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