How to achieve equal scaling of php images_php tips

The source code given in the article can realize the function of generating thumbnails according to the proportional scaling of pictures. It is a very practical technique.

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

The source code is as follows:

<&#63;php
$filename="pic.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);
//copy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, "pic1.jpg");
imagedestroy($new);
imagedestroy($img);
&#63;>

After running it with a browser, there will be pic1.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’s study.