PHP scaling image (scaling according to the proportion of width and height) example introduction_PHP tutorial

Recommend SimpleImage, a simple and practical resizing image tool, refer to http://www.white-hat-web-design.co.uk/blog/resizing-images-with-php/

How to use it ：

Set width and height, scaling at unequal proportions

Copy code The code is as follows:

include('SimpleImage.php');
$image = new SimpleImage();
$image->load('picture.jpg');
$image ->resize(250,400);
$image->save('picture2.jpg');?>

Set the width and scale proportionally

include('SimpleImage.php');
$image = new SimpleImage();
$image->load('picture.jpg');
$image->resizeToWidth (250);
$image->save('picture2.jpg');?>

Set the height and scale proportionally

include('SimpleImage.php');
$image = new SimpleImage();
$image->load('picture.jpg');
$image->resizeToHeight(500);
$image->save('picture2.jpg');
$image->resizeToHeight(200);
$image->save('picture3.jpg');?>

Proportionally, scale to 50%

include('SimpleImage.php');
$image = new SimpleImage();
$ image->load('picture.jpg');
$image->scale(50);
$image->save('picture2.jpg');?>

Output directly to the screen after scaling

header('Content-Type: image/jpeg');
include('SimpleImage.php');
$ image = new SimpleImage();
$image->load('picture.jpg');
$image->resizeToWidth(150);
$image->output();? >

SimpleImage.php source code, please click on the link at the beginning of the article to download there

http://www.bkjia.com/PHPjc/327591.htmlwww.bkjia.comtruehttp: //www.bkjia.com/PHPjc/327591.htmlTechArticle recommends a simple and practical zoom image tool SimpleImage, refer to http://www.white-hat-web-design .co.uk/blog/resizing-images-with-php/ Instructions for use: Set width and height, scale at unequal proportions...