I have a Mysql database with data about images in it. The important
field is URL which has the name of the image in the images folder. I
can get this from the datbase and I then want to use the php image
resize class (copied below) to resize the image on the fly. so the PHP
code will be something like:

while(list($url) = mysql_fetch_row($result)) {
 $image =  "/home/richsnap/public_html/ecozenhtml/images/$url"; 
etc... 

I then want to use the following class (which I got from
code.google.com) to resize the image on the fly:

<?php
/**
* Manage Image Fucntions
*
*/
class Image {
	var $width;
	var $height;
	var $thumb_width;
	var $thumb_height;
	var $maxSize = array();
	
	
	function Image($folder='', $width='', $height='', $thumb_width='',
$thumb_height=''){
		$this->folder = $folder;
		$this->width = $width;
		$this->height = $height;
		$this->thumb_width = $thumb_width;
		$this->thumb_height = $thumb_height;
	}
	
	function MaxSize($size){
		$this->maxSize = $size;
	}
	
	//calculates how to stuff a big img into a lil space
	function CalcSize($CurH,$CurW,$MaxH,$MaxW) {
		$HRatio = $CurH/$MaxH;
		$WRatio = $CurW/$MaxW;
		
		if($HRatio > $WRatio){
			$result[0] = floor($CurW*($MaxH/$CurH));
			$result[1] = $MaxH;
		}else{
			$result[0] = $MaxW;
			$result[1] = floor($CurH*($MaxW/$CurW));
		}
		
		return($result);
	}
	
	
	function Resize($img,$target='', $type='full', $quality=80){
		// create an image of the given filetype
		if (strpos($img,".jpg") !== false or strpos($img,".jpeg") !== false) {
		   $image = @imagecreatefromjpeg($img);
		   $extension = ".jpg";
		} elseif (strpos($img,".png") !== false) {
		   $image = @imagecreatefrompng($img);
		   $extension = ".png";
		} elseif (strpos($img,".gif") !== false) {
		   $image = @imagecreatefromgif($img);
		   $extension = ".gif";
		}
		if (!$image)
			return false;
		
		$size = getimagesize ($img);
		
		if ($size[1] >= $this->maxSize[1] || $size[0] >= $this->maxSize[0]){ 
			// calculate missing values
			$size2 = $this->CalcSize($size[1],$size[0],$this->maxSize[1],$this->maxSize[0]);
			$width = $size2[0];
			$height = $size2[1];
		}else{
			$width = $size[0];
			$height = $size[1];
		}
		
		$thumb = imagecreatetruecolor ($width, $height);
		
		if (function_exists("imagecopyresampled")){
		   if (!@imagecopyresampled($thumb, $image, 0, 0, 0, 0, $width,
$height, $size[0], $size[1])) {
			   imagecopyresized($thumb, $image, 0, 0, 0, 0, $width, $height,
$size[0], $size[1]);
		   }
		}else{
		   imagecopyresized($thumb, $image, 0, 0, 0, 0, $width, $height,
$size[0], $size[1]);
		}
		
		if (!$target) {
		   $target = "temp".$extension;
		}
		
		switch($type){
			case 'full':
				$this->width = $width;
				$this->height = $height;
				break;
			case 'thumb':
				$this->thumb_width = $width;
				$this->thumb_height = $height;
				break;
		}
		
		$return = true;   
		
		switch ($extension) {
		   case ".jpg": 
			   imagejpeg($thumb, $target, $quality);
			   break;
		   case ".gif": 
			   imagegif($thumb, $target);
			   break;
		   case ".png": 
			   imagepng($thumb, $target);
			   break;
		   default: 
			   $return = false;
		}
		
		// report the success (or fail) of the action
		return $return;
	}
	
	function Rotate($degrees){
		for ($i=0; $i<2; $i++){		
			$img = DIR_PICTURES . $this->gallery_id . '/';
			if ($i > 0)
				$img .= 'thumbs/';
			$img .= $this->name;
			
			
			if (strpos($img,".jpg") !== false or strpos($img,".jpeg") !== false) {
			   $source = imagecreatefromjpeg($img);
			   $extension = ".jpg";
			} elseif (strpos($img,".png") !== false) {
			   $source = ImageCreateFromPng($img);
			   $extension = ".png";
			} elseif (strpos($img,".gif") !== false) {
			   $source = ImageCreateFromGif($img);
			   $extension = ".gif";
			}
			
			// Rotate
			$rotate = imagerotate($source, $degrees, 0);
			$return = 'The Image has successfully been rotated';   
		
			switch ($extension) {
			   case ".jpg": 
				   imagejpeg($rotate, $img, 100);
				   break;
			   case ".gif": 
				   imagegif($rotate, $img);
				   break;
			   case ".png": 
				   imagepng($rotate, $img);
				   break;
			   default: 
				   $return = 'Image could not be rotated, Please try again.';
			}
			
			clearstatcache();
			$size = getimagesize ($img);
			if ($i > 0){
				$this->thumb_width = $size[0];
				$this->thumb_height = $size[1];
			}else{
				$this->width = $size[0];
				$this->height = $size[1];
			}
			// report the success (or fail) of the action
		}
		return $return;
	}
}
?>
how can I do this?

Thanks