<?php
//get values for other required vars
$filename = $_POST['uploadfile'];  //origional filename
$filetype = $_FILES['uploadfile']['type']; //uploaded filetype
$filesize = $_FILES['uploadfile']['size']; //uploaded file size
$filenametmp = $_FILES['uploadfile']['tmp_name']; //uploaded file's server side temporary name
 
$uploaddir = '../images/'; //upload directory
$uploadfile = $uploaddir.$iid.basename($_FILES['uploadfile']['name']); //upload directory + rand + origional name
 
$size = getimagesize($filenametmp);
$width = $size[0];
$height = $size[1];
 
//get file extension for validation
$ext = strrchr($file_name,'.');
$ext = strtolower($ext);
$limitedext = array(".gif",".jpg",".png",".jpeg",".bmp");	
$getExt = explode ('.', $filename);
$file_ext = $getExt[count($getExt)-1];
 
//set width variables
$ThumbWidth = 80;
 
	if($filesize){
		//keep image type
		if($file_type == "image/pjpeg" || $filenametmp == "image/jpeg" || $filenametmp == "image/jpg")
		{$new_img = imagecreatefromjpeg($filenametmp);}
 
		elseif($file_type == "image/x-png" || $filenametmp == "image/png")
		{$new_img = imagecreatefrompng($filenametmp);}
 
		elseif($file_type == "image/gif")
		{$new_img = imagecreatefromgif($filenametmp);}		
	}//if
 
 
		//make width and height array from getimagesize returned array
		list($width, $height) = getimagesize($filenametmp);
 
		//calculate the image ratio
		$imgratio=$width/$height;
		if ($imgratio>1){
		$newwidth = $ThumbWidth;
		$newheight = $ThumbWidth/$imgratio;}
		else{
		$newheight = $ThumbWidth;
		$newwidth = $ThumbWidth*$imgratio;}
 
		//resize image.
		$resized_img = imagecreatetruecolor($newwidth,$newheight);
 
		//the resizing is going on here!
		//error 1 results from the line below:
		imagecopyresized($resized_img, $new_img, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
 
		//finally, save the image
		ImageJpeg ($resized_img,"../thumbs/".$iid.$file_ext);
		ImageDestroy ($resized_img);
		//error 2 results form the line below:
		ImageDestroy ($new_img);
 
		move_uploaded_file ($filenametmp, "../images/".$iid.$file_ext);
?>

<?php
header("Content-Type: text/plain");
 
// Validate upload
if(!isset($_FILES['uploadfile'])){
	die("File was not uploaded");
}
if($_FILES['uploadfile']['error'] != 0){
	die("File upload failed. (Code #". $_FILES['uploadfile']['error'] .")");
}
 
// Set and validate the file directory info
$uploadDir = "/path/to/upload/dir/";
$originalDir = $uploadDir . "originals/";
$thumbDir = $uploadDir . "thumbs/";
if(!is_writable($originalDir) || !is_writable($thumbDir)) {
	die("PHP does not have permission to write to the upload directories.");
}
 
// Get and validate the uploaded image information
$image = $_FILES['uploadfile'];
$imageInfo = getimagesize($image['tmp_name']);
$allowedMime = array("image/jpeg", "image/png", "image/gif");
if(!in_array($imageInfo['mime'], $allowedMime)) {
	die("Image Mime type is not allowed (". $imageInfo['mime'] .")");
}
 
// Move the original to it's new location
$originalPath = $originalDir . $image['name'];
if(!move_uploaded_file($image['tmp_name'], $originalPath)) {
	die("Failed to move the original image");
}
 
// Load the original into a GD object
switch ($imageInfo['mime']) {
	case "image/jpeg":
		$originalImage = imagecreatefromjpeg($originalPath);
		break;
	case "image/png":
		$originalImage = imagecreatefrompng($originalPath);
		break;
	case "image/gif":
		$originalImage = imagecreatefromgif($originalPath);
		break;
	// No default because the above mime check makes sure it isn't needed
}
 
// Calculate the thumb size
$thumbMaxSize = 80;
$originalRatio = $imageInfo[1] / $imageInfo[0];
if($originalRatio < 0) {
	$thumbWidth = $thumbMaxSize;
	$thumbHeight = $thumbMaxSize * $originalRatio;
}
else {
	$thumbHeight = $thumbMaxSize;
	$thumbWidth = $thumbMaxSize / $originalRatio;
}
 
// Create the thumb
$thumbImage = imagecreatetruecolor($thumbWidth, $thumbHeight);
if(!imagecopyresampled($thumbImage, $originalImage, 0, 0, 0, 0, $thumbWidth, $thumbHeight, $imageInfo[0], $imageInfo[1])){
	die("Failed to create the thumb");
}
 
// Save the thumb
$thumbPath = $thumbDir . "thumb_" . $image['name'];
switch ($imageInfo['mime']) {
	case "image/jpeg":
		imagejpeg($thumbImage, $thumbPath);
		break;
	case "image/png":
		imagepng($thumbImage, $thumbPath);
		break;
	case "image/gif":
		imagegif($thumbImage, $thumbPath);
		break;
}
 
// Delete resources
imagedestroy($thumbImage);
imagedestroy($originalImage);
 
// Show success message
echo "Upload complete";
?>