fix orientation of jpg image for iphone & android in php

<?php

// original code is from http://stackoverflow.com/questions/7489742/php-read-exif-data-and-adjust-orientation
function image_fix_orientation($path){
	$image = imagecreatefromjpeg($path);
	$exif = exif_read_data($path);

	if (!empty($exif['Orientation'])) {
		switch ($exif['Orientation']) {
			case 3:
				$image = imagerotate($image, 180, 0);
				break;
			case 6:
				$image = imagerotate($image, -90, 0);
				break;
			case 8:
				$image = imagerotate($image, 90, 0);
				break;
		}
		imagejpeg($image, $path);
	}
}

// For JPEG image only
image_fix_orientation('/path/to/image.jpg');