Create Image from any friendly format

functions.php

	/**
	 * Create Image from any friendly format
	 *
	 * Return: Image Resource
	 */
function imageCreateFromAny($filepath) {
		$type = exif_imagetype($filepath); // [] if you don't have exif you could use getImageSize()
		$allowedTypes = array(
			1,  // [] gif
			2,  // [] jpg
			3,  // [] png
			6   // [] bmp
		);

		if (!in_array($type, $allowedTypes)) {
			return false;
		}
		switch ($type) {
			case 1 :
				$im = imageCreateFromGif($filepath);
				break;
			case 2 :
				$im = imageCreateFromJpeg($filepath);
				break;
			case 3 :
				$im = imageCreateFromPng($filepath);
				break;
			case 6 :
				$im = imageCreateFromBmp($filepath);
				break;
		}
		return $im;
	}