php-gdHow to resize an image

To keep proportions width/height automatically, take a look at resizing with aspect ratio keep.

<?php

$file = '/var/www/examples/heroine.png';
$size = getimagesize($file);
$im = imagecreatefrompng($file);

$imf = imagecreatetruecolor(400, 300);
imagecopyresampled($imf, $im, 0,0,0,0, 400,300,$size[0],$size[1]);

imagePng($imf, '/tmp/image.png');ctrl + cgithub

`/var/www/examples/heroine.png` path to image to resize	`getimagesize` returns image size from given path
`imagecreatefrompng` creates GD image object from given PNG image	`imagecreatetruecolor` creates true color GD image object with specified width & height
`imagecopyresampled` resizes source image and writes result to destination image	`$imf` destination image (will save resized image)
`0,0,0,0` `X` and `Y` coordinates of left point in source (first 2 numbers) and destination (last 2 numbers) images	`400,300` we're resizing image to `400x300` pixels
`imagePng` saves image in PNG format to the given path

Usage example

<?php

$file = '/var/www/examples/heroine.png';
$size = getimagesize($file);
$im = imagecreatefrompng($file);

$imf = imagecreatetruecolor(400, 300);
imagecopyresampled($imf, $im, 0,0,0,0, 400,300,$size[0],$size[1]);

imagePng($imf, '/tmp/image.png');

More of Php Gd

See more codes...

php-gdHow to resize an image

Usage example

Related

More of Php Gd