There are several ways to change the aspect ratio of images in PHP, one of the most common ways is by using the GD library
that comes pre-installed with PHP.
Here is an example of how you can use the GD library
to change the aspect ratio of an image:
<?php // Get the original image $original_image = imagecreatefromjpeg('original.jpg'); // Get the original width and height $original_width = imagesx($original_image); $original_height = imagesy($original_image); // Set the new width and height $new_width = 800; $new_height = 600; // Create a new image with the new aspect ratio $new_image = imagecreatetruecolor($new_width, $new_height); // Resize the original image to the new aspect ratio imagecopyresampled($new_image, $original_image, 0, 0, 0, 0, $new_width, $new_height, $original_width, $original_height); // Save the new image imagejpeg($new_image, 'new.jpg', 100); // Destroy the images to free up memory imagedestroy($original_image); imagedestroy($new_image); ?>
In this example, the imagecreatefromjpeg
function is used to open the original image, imagesx
and imagesy
functions are used to get the original width and height of the image, imagecreatetruecolor
function is used to create a new image with the desired aspect ratio, imagecopyresampled
function is used to resize the original image to the new aspect ratio, imagejpeg
function is used to save the new image, and imagedestroy
function is used to free up memory.
You can also use other libraries like Imagick
, Intervention
, Imagine
to manipulate and change aspect ratio of an image.
Keep in mind that manipulating image aspect ratio could cause some quality loss in the image.
Last modified: January 23, 2023