Resizing Images PHP - php

Question

I'm using a url link to resize images, such as:
image.php?name=butterfly&size=1100x1100
for example:
<img src="image.php?name=butterfly&size=1100x1100">
The code I'm using is:
<?php
if(isset($_GET['name'])){ //name
$image['name'] = $_GET['name'];
} else {
$image['name'] = null;
}
if(isset($_GET['size'])){ //dimensions
$image['size'] = $_GET['size'];
$size = explode('x', $image['size']);
$image['width'] = $size[0];
$image['height'] = $size[1];
} else {
$image['size'] = null;
}
if(isset($_GET['text'])){ //text
$image['text'] = $_GET['text'];
} else {
$image['text'] = null;
}
// File and new size
$filename = 'images/'.$image["name"].'.jpeg';
// Content type
header('Content-Type: image/jpeg');
// Output
imagecreatefromjpeg($filename);
// Set a maximum height and width
$width = $image['width'];
$height = $image['height'];
// Get new dimensions
list($width_orig, $height_orig) = getimagesize($filename);
$ratio_orig = $width_orig/$height_orig;
if ($width/$height > $ratio_orig) {
$width = $height*$ratio_orig;
} else {
$height = $width/$ratio_orig;
}
// Resample
$image_p = imagecreatetruecolor($width, $height);
$image = imagecreatefromjpeg($filename);
imagecopyresized($image_p, $image, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig);
// Output
imagejpeg($image_p, null, 100);
?>
My code works only for one part, which is the width, the image is resized to it's width but not height. Also when I resize my window, the picture get smaller every time. Thank you for your time and sorry for any bad explanation.

Answer 1

First of all, what is the question? I didn't get it.
One reason why the code changes only the width it may be because of this part of the code:
`if ($width/$height > $ratio_orig) {
$width = $height*$ratio_orig;
} else {
$height = $width/$ratio_orig;
}`
only one of the sizes will change. Also, another reasons why is changing only the width could be that you have as original image and quadratic resolution (e.g. 800x600 - ratio 1,34) and then you keep changing it to a wider one (e.g. 1280x720 - ratio 1,77).
Hope this helps!

Answer 2

As per your code logic, at any given time either your height or your width will change.
I tried it at my local host, width & height of my image was 600 X 400 and I passed 100X100 as parameter, it resized the image to 100X66, so the height did changed.