Foto resizen

<?php
$uploaddir = '/var/www/images/projects/';
$uploadfile = $uploaddir . basename($_FILES['userfile']['name']);
move_uploaded_file($_FILES['userfile']['tmp_name'], $uploadfile);
$max = 100;

$file = pathinfo($uploadfile);
$imagetype = exif_imagetype($uploadfile);
switch ($imagetype) {
	case IMAGETYPE_GIF:
		$img = imagecreatefromgif($uploadfile);
		break; 
	case IMAGETYPE_JPEG:
		$img = imagecreatefromjpeg($uploadfile);
		break;
	case IMAGETYPE_PNG:
		$img = imagecreatefrompng($uploadfile);
		break;
	default:
		$img = NULL;
		break;		
}

	unset($nimg);
	if (imagesx($img) > $max || imagesy($img) > $max) {
		if(imagesx($img) < imagesy($img)) {
			$new_height = $max;
			$new_width = $max / imagesy($img) * imagesx($img);
		} elseif (imagesx($img) > imagesy($img)) {
			$new_width = $max;
			$new_height = $max / imagesx($img) * imagesy($img);
		} elseif (imagesx($img) === imagesy($img)) {
			$new_height = $max;
			$new_width = $max;
		}
		$nimg = imagecreatetruecolor($new_width, $new_height);
		imagecopyresampled($nimg, $img, 0, 0, 0, 0, $new_width, $new_height, imagesx($img), imagesy($img));
	}
	if(isset($nimg)) {
		imagepng($nimg,$uploaddir.$filenamethumb);
	} else {
		imagepng($img, $uploaddir.$filenamethumb);
	}

<?php
$uploaddir = '/var/www/images/projects/';
$uploadfile = $uploaddir . basename($_FILES['userfile']['name']);
move_uploaded_file($_FILES['userfile']['tmp_name'], $uploadfile);
$max = 100;
 
$file = pathinfo($uploadfile);
$imagetype = exif_imagetype($uploadfile);
switch ($imagetype) {
	case IMAGETYPE_GIF:
		$img = imagecreatefromgif($uploadfile);
		break; 
	case IMAGETYPE_JPEG:
		$img = imagecreatefromjpeg($uploadfile);
		break;
	case IMAGETYPE_PNG:
		$img = imagecreatefrompng($uploadfile);
		break;
	default:
		$img = NULL;
		break;		
}
 
	unset($nimg);
	if (imagesx($img) > $max || imagesy($img) > $max) {
		if(imagesx($img) < imagesy($img)) {
			$new_height = $max;
			$new_width = $max / imagesy($img) * imagesx($img);
		} elseif (imagesx($img) > imagesy($img)) {
			$new_width = $max;
			$new_height = $max / imagesx($img) * imagesy($img);
		} elseif (imagesx($img) === imagesy($img)) {
			$new_height = $max;
			$new_width = $max;
		}
		$nimg = imagecreatetruecolor($new_width, $new_height);
		imagecopyresampled($nimg, $img, 0, 0, 0, 0, $new_width, $new_height, imagesx($img), imagesy($img));
	}
	if(isset($nimg)) {
		imagepng($nimg,$uploaddir.$filenamethumb);
	} else {
		imagepng($img, $uploaddir.$filenamethumb);
	}