PHP实现批量生成App各种尺寸Logo

使用PHP GD，使用良好，一键剪裁各种尺寸，打包下载。经常换icon的懂的，美工给你一个1024的logo，你得ps出各种尺寸，于是有了这个东西。

核心代码

代码如下:
<?php
class image {
    /**
     * source image
     *
     * @var string|array
     */
    private $source;
    /**
     * temporay image
     *
     * @var file
     */
    private $image;
    private $ext;
    /**
     * erros
     *
     * @var array
     */
    private $error;
    /**
     * construct
     *
     * @param string|array $source
     */
    public function __construct($source = NULL) {
        if($source != NULL) {
            $this->source($source);
        }
    }
    /**
     * set the source image
     *
     * @param string|array $source
     */
    public function source($source) {
        if(!is_array($source)) {
            $this->source["name"] = $source;
            $this->source["tmp_name"] = $source;
            $type = NULL;
            $ext = strtolower(end(explode(".",$source)));
            switch($ext) {
                case "jpg"  :
                case "jpeg" : $type = "image/jpeg"; break;
                case "gif"  : $type = "image/gif"; break;
                case "png"  : $type = "image/png"; break;
            }
            $this->source["type"] = $type;