PHP 开发学习[3] —— 文字水印，缩略图，图片水印实现类

class ImageToTest {
    /**
     * 图片的基本信息
     */
    private $info;
    private $image;
    public function __construct($src){
        $info = getimagesize($src);
        $this->info = array(
            'width'=> $info[0],
            'height'=> $info[1],
            'type'=> image_type_to_extension($info[2],false),
            'mime'=>$info['mime']
        );
        $fun = "imagecreatefrom{$this->info['type']}";
        $this->image = $fun($src);
    }
    /**
     * 操作图片 （压缩）
     */
    public function thumb($width,$height){
        $image_thumb = imagecreatetruecolor($width,$height);
        imagecopyresampled($image_thumb,$this->image,0,0,0,0,$width,$height,
            $this->info['width'],$this->info['height']);
        imagedestroy($this->image);
        $this->image = $image_thumb;
    }
    /**
     * 操作图片（添加文字水印）
     */
    public function fontMark($content,$font_url,$size,$color,$local,$angle){
        $col = imagecolorallocatealpha($this->image,$color[0],$color[1],$color[2],$color[3]);
        imagettftext($this->image,$size,$angle,$local['x'],$local['y'],$col,$font_url,$content);
    }

    /**
     * 操作图片（添加水印图片）
     */
    public function imageMark($source,$local,$alpha){
        //1.获取水印图片的基本信息
        $info2 = getimagesize($source);
        //2.通过水印的图片编号来获取水印的图片类型
        $type2 = image_type_to_extension($info2[2],false);
        //3.在内存中创建一个和我们的水印图像一致的图像类型
        $func2 = "imagecreatefrom{$type2}";
        //4.把水印图片复制到内存中
        $water = $func2($source);
        //5.合并图片
        imagecopymerge($this->image,$water,$local['x'],$local['y'],0,0,$info2[0],$info2[1],$alpha);
        //6.销毁水印图片
        imagedestroy($water);
    }
    /**
     * 在浏览器中输出图片
     */
    public function show(){
        header("Content-type:".$this->info['mime']);
        $funs = "image{$this->info['type']}";
        $funs($this->image);
    }
    /**
     * 把图片保存到硬盘里
     */
    public function save($newName){
        $funs = "image{$this->info['type']}";
        $funs($this->image,'./outPut/'.$newName.'.'.$this->info['type']);
    }
    /**
     * 销毁图片  使用析构函数
     */
    public function __destruct()
    {
        imagedestroy($this->image);
    }
}

require_once('ImageToTest.class.php');

/*$src = './image/wbg.jpg';
$image = new ImageToTest($src);
$image->thumb(700,550);
$image->show();*/


/*$src2 = './image/wbg.jpg';
$content = 'SGC';
$font_url = './image/YGYcuhei.ttf';
$size = 33;
$color = array(
    0=>2,
    1=>222,
    2=>222,
    3=>60
);
$local = array(
    'x'=>20,
    'y'=>100
);
$angle = 10;
$image2 = new ImageToTest($src2);
$image2->fontMark($content,$font_url,$size,$color,$local,$angle);
$image2->show();
$image2->save('hahahah');*/

$src3 = './image/wbg.jpg';
$source = './image/water.jpg';

$local = array(
    'x'=>20,
    'y'=>100
);
$font_url = './image/YGYcuhei.ttf';
$size = 38;
$color = array(
    0=>2,
    1=>222,
    2=>222,
    3=>60
);
$alpha = 60;
$angle = 50;
$image3 = new ImageToTest($src3);
$image3->imageMark($source,$local,$alpha);
$image3->thumb(700,550);
$image3->fontMark('Hello',$font_url,$size,$color,$local,$angle);
$image3->show();
$image3->save('WAWAWAWAWA');