<?php 
header('X-UA-Compatible: IE=edge,chrome=1');
function createthumb($name,$filename,$new_w,$new_h)
	{
	
	$width = getWidth($filename);
	$height = getHeight($filename);

	if ($width > $new_w){
		$scale = $new_w/$width;
	}elseif ($height > $new_h){
		$scale = $new_h/$height;
	}else{
		$scale = 1;
	}
		$name = resizeImage($filename,$width,$height,$scale);

} 

function getHeight($image) {
	$size = getimagesize($image);
	$height = $size[1];
	return $height;
}
function getWidth($image) {
	$size = getimagesize($image);
	$width = $size[0];
	return $width;
}

function resizeImage($image,$width,$height,$scale) {
	list($imagewidth, $imageheight, $imageType) = getimagesize($image);
	$imageType = image_type_to_mime_type($imageType);
	$newImageWidth = ceil($width * $scale);
	$newImageHeight = ceil($height * $scale);
	$newImage = imagecreatetruecolor($newImageWidth,$newImageHeight);

	// Make the background transparent
	if ($imageType == 'image/gif') {
		$transparent = imagecolorallocate($newImage, 0, 0, 0);
		imagecolortransparent($newImage, $transparent);
	}	else	{
		imagealphablending($newImage, false);
		imagesavealpha($newImage, true);
		$trans_colour = imagecolorallocatealpha($newImage, 0, 0, 0, 127);
		imagefill($newImage, 0, 0, $trans_colour);
	}

	switch($imageType) {
		case "image/gif":
			$source=imagecreatefromgif($image); 
			break;
	    case "image/pjpeg":
		case "image/jpeg":
		case "image/jpg":
			$source=imagecreatefromjpeg($image); 
			break;
	    case "image/png":
		case "image/x-png":
			$source=imagecreatefrompng($image); 
			break;
  	}
	imagecopyresampled($newImage,$source,0,0,0,0,$newImageWidth,$newImageHeight,$width,$height);
	
	switch($imageType) {
		case "image/gif":
	  		imagegif($newImage,$image); 
			break;
      	case "image/pjpeg":
		case "image/jpeg":
		case "image/jpg":
	  		imagejpeg($newImage,$image,100); 
			break;
		case "image/png":
		case "image/x-png":
			imagepng($newImage,$image);  
			break;
    }
	
	//chmod($image, 0775);
	return $image;
}
?>