php实现图片上传并等比例压缩

分为两个文件，采用原始php简单粗暴的说明用法

shenshu.php 接收2个GET参数orderid，account。后面的类会根据此参数创建目录

访问方式http://xxxxxxxx.com/page/shenshu.php?account=13xxxxxxx8xx&orderid=00000

---

申诉

文件名：

---

upload_shenshu.php

---

header("Content-type: text/html; charset=utf-8");

$orderid=$_POST['orderid'];

$account=$_POST['account'];

$path = dirname(__DIR__)."/upload/shenshu/$account/$orderid/";

if (!is_dir($path)){

    mkdir ($path,0777,true);

}

//文件后缀

$houzui = pathinfo($_FILES['upfile']['name']);

//文件名

$filename = $account.'_'.$orderid.'.'.$houzui['extension'];

$imgurl = "http://xxxxxx.com/upload/shenshu/$account/$orderid/".$filename;

$FILE_SAVE_PATH = '../upload/shenshu/'.$account.'/'.$orderid.'/'.$filename;

if(move_uploaded_file($_FILES['upfile']['tmp_name'],$FILE_SAVE_PATH)){

    $image = new Image($FILE_SAVE_PATH);

    $image->percent = 0.2;

    $image->openImage();

    $image->thumpImage();

    $image->showImage();

    unlink($FILE_SAVE_PATH);

    $image->saveImage($FILE_SAVE_PATH);

    echo '

上传成功

'."
";

    echo "

您的账号为$account

";

    echo "";

}

class Image{

    private $src;

    private $imageinfo;

    private $image;

    public  $percent = 0.1;

    public function __construct($src){

        $this->src = $src;

}

    /**

打开图片

*/

    public function openImage(){

        list($width, $height, $type, $attr) = getimagesize($this->src);

        $this->imageinfo = array(

            'width'=>$width,

            'height'=>$height,

            'type'=>image_type_to_extension($type,false),

            'attr'=>$attr

        );

        $fun = "imagecreatefrom".$this->imageinfo['type'];

        $this->image = $fun($this->src);

}

    /**

操作图片

*/

    public function thumpImage(){

        $new_width = $this->imageinfo['width'] * $this->percent;

        $new_height = $this->imageinfo['height'] * $this->percent;

        $image_thump = imagecreatetruecolor($new_width,$new_height);

        //将原图复制带图片载体上面，并且按照一定比例压缩,极大的保持了清晰度

        imagecopyresampled($image_thump,$this->image,0,0,0,0,$new_width,$new_height,$this->imageinfo['width'],$this->imageinfo['height']);

        imagedestroy($this->image);

        $this->image =    $image_thump;

}

    /**

输出图片

*/

    public function showImage(){

        header('Content-Type: image/'.$this->imageinfo['type']);

        $funcs = "image".$this->imageinfo['type'];

        $funcs($this->image);

}

    /**

保存图片到硬盘

*/

    public function saveImage($name){

        $funcs = "image".$this->imageinfo['type'];

        $funcs($this->image,$name.'.'.$this->imageinfo['type']);

}

    /**

销毁图片

*/

    public function __destruct(){

        imagedestroy($this->image);

}

}