PHP学习创建水印，缩略图

<?php
class Image_process{
    public $source;//原图
    public $source_width;//宽
    public $source_height;//高
    public $source_type_id;//原图的类型
    public $orign_name;//文件名
    public $orign_dirname;//路径名
    
    public function __construct($source){   //传入图片路径作为参数
        $this->typeList      = array(1=>‘gif‘,2=>‘jpg‘,3=>‘png‘);
        $ginfo               = getimagesize($source);   //获取图片的参数
        $this->source_width  = $ginfo[0];
        $this->source_height = $ginfo[1];
        $this->source_type_id= $ginfo[2];
        $this->orign_url     = $source;
        $this->orign_name    = basename($source);
        $this->orign_dirname = dirname($source);
    }
 
                                             
    public function judgeType($type,$source){     //判断并处理,返回PHP可识别编码
        if($type==1){
            return ImageCreateFromGIF($source);//gif
        }else if($type==2){
            return ImageCreateFromJPEG($source);//jpg
        }else if($type==3){
            return ImageCreateFromPNG($source);//png
        }else{
            return false;
        } 
    }
 
    
    public function watermarkImage($logo){   //生成水印图
        $linfo        = getimagesize($logo);
        $logo_width   = $linfo[0];
        $logo_height  = $linfo[1];
        $logo_type_id = $linfo[2];
        $sourceHandle = $this->judgeType($this->source_type_id,$this->orign_url);
        $logoHandle   = $this->judgeType($logo_type_id,$logo);
 
        if( !$sourceHandle || ! $logoHandle ){
            return false;
        }
        $x = $this->source_width - $logo_width;
        $y = $this->source_height- $logo_height;
 
        ImageCopy($sourceHandle,$logoHandle,$x,$y,0,0,$logo_width,$logo_width) or die("fail to combine");
        $newPic = $this->orign_dirname .‘\water_‘. time().‘.‘. $this->typeList[$this->source_type_id];
        //将小logo作为水印拷贝到原图片的某个位置
        if( $this->saveImage($sourceHandle,$newPic)){   //保存将水印写入
            imagedestroy($sourceHandle);
            imagedestroy($logoHandle);
        }
    }
 
    // fix 宽度
    // height = true 固顶高度
    // width  = true 固顶宽度
    public function fixSizeImage($width,$height){
        if( $width > $this->source_width) $this->source_width;
        if( $height > $this->source_height ) $this->source_height;
        if( $width === false){
            $width = floor($this->source_width / ($this->source_height / $height));
        }
        if( $height === false){
            $height = floor($this->source_height / ($this->source_width / $width));
        }
        $this->tinyImage($width,$height);
    }
 
    //比例缩放
    // $scale 缩放比例
    public function scaleImage($scale){
        $width  = floor($this->source_width * $scale);   //按照scale比例将原图进行缩放
        $height = floor($this->source_height * $scale);
        $this->tinyImage($width,$height);
    }
 
    //创建略缩图
    private function tinyImage($width,$height){
        $tinyImage = imagecreatetruecolor($width, $height );
        $handle    = $this->judgeType($this->source_type_id,$this->orign_url);
        if(function_exists(‘imagecopyresampled‘)){
            imagecopyresampled($tinyImage,$handle,0,0,0,0,$width,$height,$this->source_width,$this->source_height);
        }else{
            imagecopyresized($tinyImage,$handle,0,0,0,0,$width,$height,$this->source_width,$this->source_height);
        }
 
        $newPic = time().‘_‘.$width.‘_‘.$height.‘.‘. $this->typeList[$this->source_type_id];
        $newPic = $this->orign_dirname .‘\thumb_‘. $newPic;
        if( $this->saveImage($tinyImage,$newPic)){
            imagedestroy($tinyImage);
            imagedestroy($handle);
        }
    }
 
    //保存图片
    private function saveImage($image,$url){
        if(ImageJpeg($image,$url)){
            return true;
        }
    }
}
?>

<?php
 
include(‘image_process.class.php‘);
$m = array(
    ‘D:\localhost\1.jpg‘,
    ‘D:\localhost\2.jpg‘,
    ‘D:\localhost\3.jpg‘,
    ‘D:\localhost\4.jpg‘
);
 
//$img  = ‘D:\localhost\1.jpg‘;
$logo = ‘D:\localhost\logo.jpg‘;
foreach( $m as $item){
    $s = new Image_process( $item );
    $s->watermarkImage($logo);//生成水印
    $s->scaleImage(0.8);//生成缩略图
    $s->fixSizeImage(200,false);
    sleep(1);
    echo $m." is done"."<br/>";
}
?>