PHP之图片上传类（加了缩略图），_PHP教程

PHP之图片上传类（加了缩略图），

有缩略图功能 但是 感觉不全面，而且有点问题，继续学习，将来以后修改下

<form action="" enctype="multipart/form-data" method="post">

filename=$filename;
        $this->fileinfo=$_FILES[$this->filename];
        $this->filemax=$filemax;
        $this->filepath=$filepath;
        $this->fileflag=$fileflag;
        $this->fileExt=$fileExt;
        $this->fileMine=$fileMine;

        //var_dump($this->filename);

    }

    //错误判断
    public function UpError(){

            if($this->fileinfo['error']>0){
                switch($this->fileinfo['error'])
                {
                    case 1:
                    $this->fileerror="上传文件大小超过服务器允许上传的最大值，php.ini中设置upload_max_filesize选项限制的值 ";
                        break;
                    case 2:
                        $this->fileerror="上传文件大小超过HTML表单中隐藏域MAX_FILE_SIZE选项指定的值";
                        break;
                    case 3:
                        $this->fileerror="文件部分被上传";
                        break;
                    case 4:
                        $this->fileerror="没有选择上传文件";
                        break;
                    case 5:
                        $this->fileerror="未找到临时目录";
                        break;
                    case 6:
                        $this->fileerror="文件写入失败";
                        break;
                    case 7:
                        $this->fileerror="php文件上传扩展没有打开 ";
                        break;
                    case 8:
                        $this->fileerror="";
                        break;

                }
                return false;
            }
            return true;

    }

    //检测文件类型
    public function UpMine(){
        if(!in_array($this->fileinfo['type'],$this->fileMine)) {
            $this->error="文件上传类型不对";
            return false;
        }
        return true;

    }
    //检测文件格式
    public function UpExt(){
        $this->ext=pathinfo($this->fileinfo['name'],PATHINFO_EXTENSION);
        //var_dump($ext);
        if(!in_array($this->ext,$this->fileExt)){
            $this->fileerror="文件格式不对";
            return false;
        }
       return true;
    }
    //检测文件路径
    public function UpPath(){
        if(!file_exists($this->filepath)){
            mkdir($this->filepath,0777,true);
        }
    }
    //检测文件大小
    public function UpSize(){
        $max=$this->fileinfo['size'];
        if($max>$this->filemax){
            $this->fileerror="文件过大";
            return false;
        }
        return true;
    }
    //检测文件是否HTTP
    public function UpPost(){
        if(!is_uploaded_file($this->fileinfo['tmp_name'])){
            $this->fileerror="恶意上偿还";
            return false;
        }
        return true;
    }
    //文件名防止重复
    public function Upname(){
        return md5(uniqid(microtime(true),true));
    }

    //图片缩略图
    public function Smallimg($x=100,$y=100){
        $imgAtt=getimagesize($this->path);
        //图像宽，高，类型
        $imgWidth=$imgAtt[0];
        $imgHeight=$imgAtt[1];
        $imgext=$imgAtt[2];
        //等比列缩放

        if(($x/$imgWidth)>($y/$imgHeight)){
            $bl=$y/$imgHeight;
        }else{
            $bl=$x/$imgWidth;
        }
        $x=floor($imgWidth*$bl);  //缩放后
        $y=floor($imgHeight*$bl);
        $images=imagecreatetruecolor($x,$y);
        $big=imagecreatefromjpeg($this->path);
        imagecopyresized($images,$big,0,0,0,0,$x,$y,$imgWidth,$imgWidth);
        switch($imgext){
            case 1:
                $imageout=imagecreatefromgif($this->path);
                break;
            case 2:
                $imageout=imagecreatefromjpeg($this->path);
                break;
            case 3:
                $imageout=imagecreatefromgif($this->path);
                break;
        }
        $im=imagejpeg($images,$this->path);




    }

    //文件双传
    public function uploads()
    {
        if($this->UpError()&&$this->UpMine()&&$this->UpExt()&&$this->UpSize()&&$this->UpPost()){
            $this->UpPath();
            $names=$this->Upname();
            $this->path=$this->filepath.'/'. $names.'.'.$this->ext;

            if(move_uploaded_file($this->fileinfo['tmp_name'], $this->path)){
                return  $this->path;
            }else{
                $this->fileerror="上传失败";
            }
        }else{
            exit("".$this->fileerror."");
        }
    }





}




?>

uploads();

  $c=$u->Smallimg();
echo "";
echo "";

?>

http://www.bkjia.com/PHPjc/1138633.htmlwww.bkjia.comtruehttp://www.bkjia.com/PHPjc/1138633.htmlTechArticlePHP之图片上传类（加了缩略图）， 有缩略图功能 但是 感觉不全面，而且有点问题，继续学习，将来以后修改下 form action="?php $_SERVER['PHP_...