php添加文字水印/图片水印，压缩，剪切的封装类

直接上代码：

class Image
{    
    private $info;

    private $image;
    public $type;
    public function __construct($src)
    {

        $this->info=getimagesize($src);
        $this->type=image_type_to_extension($this->info['2'],false);
        $fun="imagecreatefrom{$this->type}";
        $this->image=$fun($src);
    }
    /**
     * 文字水印
     * @param  [type]  $font     字体
     * @param  [type]  $content  内容
     * @param  [type]  $size     文字大小
     * @param  [type]  $col      文字颜色（四元数组）
     * @param  array   $location 位置 
     * @param  integer $angle    倾斜角度
     * @return [type]           
     */
    public function fontMark($font,$content,$size,$col,$location,$angle=0){
        $col=imagecolorallocatealpha($this->image, $col['0'], $col['1'], $col['2'],$col['3']);

        imagettftext($this->image, $size, $angle, $location['0'], $location['1'], $col,$font,$content);
    }
    
    /**
     * 图片水印
     * @param  [type] $imageMark 水印图片地址
     * @param  [type] $dst       水印图片在原图片中的位置
     * @param  [type] $pct       透明度
     * @return [type]            
     */
    public function imageMark($imageMark,$dst,$pct){
        $info2=getimagesize($imageMark);
        $type=image_type_to_extension($info2['2'],false);
        $func2="imagecreatefrom".$type;
        $water=$func2($imageMark);

        imagecopymerge($this->image, $water, $dst[0], $dst[1], 0, 0, $info2['0'], $info2['1'], $pct);
        imagedestroy($water);

    }
    /**
     * 压缩图片
     * @param  [type] $thumbSize 压缩图片大小
     * @return [type]            [description]
     */
    public function thumb($thumbSize){
        $imageThumb=imagecreatetruecolor($thumbSize[0], $thumbSize[1]);
        
        imagecopyresampled($imageThumb, $this->image, 0, 0, 0, 0, $thumbSize[0], $thumbSize[1], $this->info['0'], $this->info['1']);
        imagedestroy($this->image);
        $this->image=$imageThumb;
    }
    /**
    * 裁剪图片
     * @param  [type] $cutSize  裁剪大小
     * @param  [type] $location 裁剪位置
     * @return [type]           [description]
     */
     public function cut($cutSize,$location){
         $imageCut=imagecreatetruecolor($cutSize[0],$cutSize[1]);

         imagecopyresampled($imageCut, $this->image, 0, 0, $location[0], $location[1],$cutSize[0],$cutSize[1],$cutSize[0],$cutSize[1]);
         imagedestroy($this->image);
         $this->image=$imageCut;
     }
    /**
     * 展现图片
     * @return [type] [description]
     */
    public function show(){
        header("content-type:".$this->info['mime']);

        $funn="image".$this->type;

        $funn($this->image);
    }
    /**
     * 保存图片
 * @param  [type] $newname 新图片名
 * @return [type]          [description]
 */
     public function save($newname){
         header("content-type:".$this->info['mime']);

         $funn="image".$this->type;

         $funn($this->image,$newname.'.'.$this->type);
     }
     public function __destruct(){
         imagedestroy($this->image);
     }

 }

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