PHP code to implement image scaling, _PHP tutorial

php implements the image scaling code,

Create a new file index.php, you need to have a picture in the statistics directory as q.jpg (the name of the picture can be changed according to the source code )

The source code is as follows:

<&#63;php
$filename="q.jpg";
$per=0.3;
list($width, $height)=getimagesize($filename);
$n_w=$width*$per;
$n_h=$height*$per;
$new=imagecreatetruecolor($n_w, $n_h);
$img=imagecreatefromjpeg($filename);
//拷贝部分图像并调整
imagecopyresized($new, $img,0, 0,0, 0,$n_w, $n_h, $width, $height);
//图像输出新图片、另存为
imagejpeg($new, "q1.jpg");
imagedestroy($new);
imagedestroy($img);
&#63;>

After running it with a browser, there will be q1.jpg in the directory at the same level as index.php. This image is a scaled image. The path can be changed in the source code and placed in your own project. You can go or write a method

The above is the entire content of this article. I hope it will be helpful to everyone learning the PHP language.