CodeIgniter: Automatic image rotation library

image_autorotate.php

<?php if (!defined('BASEPATH')) exit('No direct script access allowed');

/**
* @file application/libraries/Image_autorotate.php
*/
class Image_autorotate
{
	function __construct($params = NULL) {
		
		if (!is_array($params) || empty($params)) return FALSE;
		
		$filepath = $params['filepath'];
		$exif = @exif_read_data($filepath);
		
		if (empty($exif['Orientation'])) return FALSE;
		
		$CI =& get_instance();
		$CI->load->library('image_lib');
		
		$config['image_library'] = 'gd2';
		$config['source_image']	= $filepath;
		
		$oris = array();
		
		switch($exif['Orientation'])
		{
		        case 1: // no need to perform any changes
		        break;
		
		        case 2: // horizontal flip
				$oris[] = 'hor';
		        break;
		                                
		        case 3: // 180 rotate left
		        	$oris[] = '180';
		        break;
		                    
		        case 4: // vertical flip
		        	$oris[] = 'ver';
		        break;
		                
		        case 5: // vertical flip + 90 rotate right
		        	$oris[] = 'ver';
				$oris[] = '270';
		        break;
		                
		        case 6: // 90 rotate right
		        	$oris[] = '270';
		        break;
		                
		        case 7: // horizontal flip + 90 rotate right
		        	$oris[] = 'hor';
				$oris[] = '270';
		        break;
		                
		        case 8: // 90 rotate left
		        	$oris[] = '90';
		        break;
				
			default: break;
		}
		
		foreach ($oris as $ori) {
			$config['rotation_angle'] = $ori;
			$CI->image_lib->initialize($config); 
			$CI->image_lib->rotate();
		}
	}
}

// END class Image_autorotate

/* End of file Image_autorotate.php */
/* Location: ./application/libraries/Image_autorotate.php */

Usage example:

$imageinfo = $this->upload->data();
$full_path = $imageinfo['full_path'];

// check EXIF and autorotate if needed
$this->load->library('image_autorotate', array('filepath' => $full_path));

Hey @codee. Sorry to wake the deamons 2 years later - but your solution seems really good.
How can you "retake" 'image_width' and 'image_height'? (I need to return them in the response)

I was having a problem with your library, to fix it I added at the end of the foreach this line:

$CI->image_lib->clear();

Thank you. It worked for me.

Thank you, it's working 100%

Perfect! Just what I needed. Had to add @sand3r-2008 his fix though.

hello this is not work me for png file pls help me to resolve it

Hello, does this save the changes to the original image?

It's worked.

Solução para o problema CodeIgniter image rotate! Thanks!!