<?php

class ResizeImage
{

	//Resize the following image
	function CreateThumb($file,$des,$dim,$ext,$dim_h=NULL,$aspect_ratio=true){
		
		$array = getimagesize($file);
		$width_orig= $array[0];
		$height_orig= $array[1];
	
		if($width_orig > $dim || $height_orig>$dim )
		{
			if($width_orig > $height_orig)
			{
				$ratio= $width_orig/$dim;
			}else{
				if($dim_h==NULL)
				$ratio=$height_orig/$dim;
				else
				$ratio=$height_orig/$dim_h;
			}
			
			$width=$width_orig/$ratio;
			$height=$height_orig/$ratio;
			
			if($aspect_ratio == false && $dim_h !=''){
			$width = $dim;
			$height = $dim_h;
			}
			
			$image_p = imagecreatetruecolor($width, $height);
			
			if($ext=='jpg' || $ext=='JPG' || $ext=='JPEG'){
			$image = imagecreatefromjpeg($file);
			imagecopyresampled($image_p, $image, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig);
			imagejpeg($image_p,$des, 90);
			}
			if($ext=='png' || $ext=='PNG'){
			$image = imagecreatefrompng($file);
			imagecopyresampled($image_p, $image, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig);
			imagepng($image_p,$des);
			}
			
			if($ext=='gif' || $ext=='GIF'){
			$image = imagecreatefromgif($file);
			imagecopyresampled($image_p, $image, 0, 0, 0, 0, $width, $height, $width_orig, $height_orig);
			imagegif($image_p,$des, 90);
			}
		}else
		{
			if(!file_exists($des))
				copy($file,$des);
		}
	}
	
	//Validating an Image
	
	function ValidateImage($file,$ext=NULL){
	$array = getimagesize($file);	
	if($ext == 'jpg' || $ext == 'JPG' ||$ext == 'JPEG' || $ext == 'gif' || $ext == 'GIF' || $ext == 'PNG' || $ext == 'png')
	{
		if(empty($array[0]) || empty($array[1])){
		$validate = false;
		}else{
		$validate = true;
		}
	}
	else
	{
		$validate = false;
		}
	return $validate;
	}
}
?>