blog_tp6/app/common/service/FileService.php

<?php
declare(strict_types=1);

/**
 * 文件 service
 *
 * @version      0.0.1
 * @author      by huwhois
 * @time        2021/12/28
 */

namespace app\common\service;

use think\Image;
use think\facade\Filesystem;
use think\Exception;
use think\File;

class FileService
{
    /**
     * 生成缩略图
     * @param string $filename 必须参数, 图片路径名(相对or绝对)(/public/uploads/...)
     * @param int $width 缩略图宽值, 默认 384px;
     * @param int $height 缩略图高值, 默认 224px;
     * @param int $type 缩略图裁剪方式, 默认值 1, 固定尺寸缩放; 其他: 1, 等比例缩放;
     * 2, 缩放后填充; 3, 居中裁剪; 4, 左上角裁剪; 5, 右下角裁剪
     * @return string $thumbname 缩略图文件名
     */
    public static function makeThumb($filename, $width = 384, $height = 224, $type = 1, $t_suffix = "thumb")
    {
        $file = './storage/' . str_replace('\\', '/', $filename);

        $ext = pathinfo($file, PATHINFO_EXTENSION);

        $thumbname = str_replace('.' . $ext, '', str_replace('\\', '/', $filename)) . $t_suffix . '.' . $ext;

        $image = Image::open($file);

        $result = $image->thumb($width, $height, $type)->save('./storage/' . $thumbname);

        return $result ? $thumbname : '';
    }

    public function urlImg($url)
    {
        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_HEADER, 0);
        curl_setopt($ch, CURLOPT_NOBODY, 0); // 只取body头
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
        $package = curl_exec($ch);
        $httpinfo = curl_getinfo($ch);

        curl_close($ch);
        $imageAll = array_merge(array(
            'imgBody' => $package
        ), $httpinfo);

        if ($httpinfo['download_content_length'] > 4 * 1024 * 1024) {
            throw new Exception("文件太大", 1);
        }

        $type = null;

        switch ($imageAll['content_type']) {
            case 'image/gif':
                $type = "gif";
                break;
            case 'image/webp':
                $type = "webp";
                break;
            case 'image/jpeg':
                $type = "jpg";
                break;
            case 'image/png':
                $type = "png";
                break;
            default:
                $type = null;
                break;
        }

        if (!$type) {
            throw new Exception("不支持的文件后缀", 1);
        }

        $temp = app()->getRuntimePath() . 'temp';

        if (!file_exists($temp)) {
            mkdir($temp, 0755);
        }

        $tempname = $temp . '/php.' . $type;

        file_put_contents($tempname, $imageAll["imgBody"]);

        return new File($tempname);
    }

    /**
     * 遍历获取目录下的指定类型的文件
     * @param $path
     * @param $allowFiles  png|jpg|jpeg|gif|bmp|webp
     * @param array $files
     * @return array
     */
    public static function getFiles($path, $allowFiles = 'png|jpg|jpeg|gif|bmp|webp', &$files = array())
    {
        if (!is_dir($path)) return null;
        if (substr($path, strlen($path) - 1) != '/') $path .= '/';
        $handle = opendir($path);
        while (false !== ($file = readdir($handle))) {
            if ($file != '.' && $file != '..') {
                $path2 = $path . $file;
                if (is_dir($path2)) {
                    self::getFiles($path2, $allowFiles, $files);
                } else {
                    if (preg_match("/\.(" . $allowFiles . ")$/i", $file)) {
                        $files[] = array(
                            'url' => substr($path2, strlen(app()->getRootPath().'/public') - 1),
                            'mtime' => filemtime($path2)
                        );
                    }
                }
            }
        }
        return $files;
    }
}