PHP Rotate image file permanently - php

Question

I want a user to be able to permanently rotate an image file clockwise or counter clockwise. I have tried imagejpeg($rotate) but can't seem to make it work right.
<form method="GET" action="rotate.php">
Rotate:<input type="radio" name="rotate" value="clockwise">Clockwise
<input type="radio" name="rotate" value="counterclockwise">Counter clockwise
<input type="Submit" name="Submit1"/>
</form>
I am trying to allow the user to be able to choose the radio button direction and click "Submit". Then the displayed image will update rotated to whichever direction they chose and stay that way permanently whenever it is used again. Any help or direction?
<img src=\"uploads/$user/$folder/$image\"/></a>";

Answer 1

use imagerotate() this will rotate image permanently.
<?php
// File and rotation
$filename = 'test.jpg';
$degrees = 180;
// Content type
header('Content-type: image/jpeg');
// Load
$source = imagecreatefromjpeg($filename);
// Rotate
$rotate = imagerotate($source, $degrees, 0);
// Output
imagejpeg($rotate);
?>
http://php.net/manual/en/function.imagerotate.php
Or you can use this using jquery
http://www.linein.org/examples/jquery_rotate/

Answer 2

If you want to rotate your picture permanently, HTML or CSS is not the way to go. You will need some server-side scripting to store the rotated picture.
You sould have a look at GD library. For this kind of image manipulation, I have been using Imagine library, which is a library based on GD.

Answer 3

If someone else ever needs this. Here is a function that will replace the original with the rotated image:
public function autoRatateImage($src, $exifCode = ''){
if($exifCode == ''){
$exif = exif_read_data($src);
}else{
$exif['Orientation'] = $exifCode;
}
$source = imagecreatefromjpeg($src);
if (!empty($exif['Orientation'])) {
switch ($exif['Orientation']) {
case 3:
$image = imagerotate($source, 180, 0);
break;
case 6:
$image = imagerotate($source, -90, 0);
break;
case 8:
$image = imagerotate($source, 90, 0);
break;
}
if (file_exists($src)) {
unlink($src);
}
imagejpeg($image, $src , 100);
}
}