<?php

/**
* Created by PhpStorm.
* User: Administrator
* Date: 2017/2/21
* Time: 17:20
*/
class Image
{
   /*内存中的图片*/
   private $image;
   /*私有的图片资源信息，不给外部使用*/
   private $imageinfo;
   /*创建类时打开图片读取到内存中*/
   /**
    * Image constructor.
    * @param $src
    */
   public function __construct($src){
       /*获得图片资源*/
       $imageinfo=getimagesize($src);
       /*重构图片资源属性并赋给对象*/
       $this->imageinfo=array(
           'width'=>$imageinfo['0'],
           'height'=>$imageinfo['1'],
           'type'=>image_type_to_extension($imageinfo['2'],false),
           'mime'=>$imageinfo['mime']
       );
       $this->image=self::creatImage($src);
   }
   private function creatImage($src){
       $creat="imagecreatefrom{$this->imageinfo['type']}";
       return $creat($src);
   }
   /*图片压缩*/
   public function thumbImage($width,$height){
       $image_thumb=imagecreatetruecolor($width,$height);
       imagecopyresampled($image_thumb,$this->image,0,0,0,0,$width,$height,$this->imageinfo['width'],$this->imageinfo['height']);
       imagedestroy($this->image);
       $this->image=$image_thumb;
   }
   /*快捷打印方式*/
   private function printImage($type,$file=null){
       $primg="image{$this->imageinfo['type']}";
       $primg($this->image,$file);
   }
   /*浏览器中显示图片*/
   public function showImage(){
       header("Content-type:",$this->imageinfo['mime']);
       self::printImage($this->image);
   }
   /*保存实体文件*/
   public function saveImage($picName){
       $picturename=$picName.'.'.$this->imageinfo['type'];
       self::printImage($this->image,$picturename);
   }
   /*销毁图片*/
   public function __destruct(){
       imagedestroy($this->image);
   }
}



<?php
/**
* Created by PhpStorm.
* User: Administrator
* Date: 2017/2/21
* Time: 19:18
*/
require_once ("image.php");
$src='001.jpg';
$image=new Image($src);
$image->thumbImage(300,150);
//$image->showImage();
$image->saveImage(xiaoqiche);



Notice: Use of undefined constant xiaoqiche - assumed 'xiaoqiche' in D:\wamp\www\tmlog.com\image\test.php on line 13


求大神解惑~~~~~~