Image class

<?php 
//class image handler
    class image
    {
	//only for image handlers
	var $supportim = array(1,2,3); //1 = gif / 2 = jpg / 3 = png 
	//check for file realy exists
	//$file = file that schould be resized / what ever
	function _check_file(){
		if(file_exists($this->file)){
			//file does realy exists
			return true;
		}else{
			return false;
		}
	}
	//recive image size and check if file is realy a image
	function _get_image_size(){
		if($this->dimension = getimagesize($this->file)){
			//we got a image;
			return true;
		}else{
			return false;
		}
	}
	//check if we got a support for those images
	function _check_image_support(){
		if(empty($this->dimension)){
			//trigger a error;
			trigger_error('No file specified please run get_image_size first',E_WARNING_ERROR);	
		}else{
		  if(in_array($this->dimension[2],$this->supportim)){
		    return true;
		}else{
		  return false;
		}
		}
	}
		function read_file(){
	  if($this->dimension[2] == 1){
	 	if(!$this->image_source = imagecreatefromgif($this->file)){	
	 	  	 	   trigger_error('Failed to open a stream',E_USER_WARNING);
		   return false;
		}else{
		  return true;
		}   
	}elseif($this->dimension[2] == 2){
	 	if(!$this->image_source = imagecreatefromjpeg($this->file)){
	 	  	 	   trigger_error('Failed to open a stream',E_USER_WARNING);
		   return false;
		}else{
		  return true;
		}   
	}elseif($this->dimension[2] == 3){
	 	if(!$this->image_source = imagecreatefrompng($this->file)){
	 	   trigger_error('Failed to open a stream',E_USER_WARNING);
		   return false;
		}else{
		  
		  return true;
		}   
	}else{
	  	 	   trigger_error('Filetype is not supported',E_USER_WARNING);
	  return false;	
	}
	}
	//check image support
	//output:
	//1 = support for resize / flip 
	//2 = Image but no support: But it is at least a image so avaible to upload. 
	//3 = No image only upload avialble Please check correct files if you want
	//4 = file does not exits;
	function check_support(){
	  	if($this->_check_file()){
	  	  if($this->_get_image_size()){
	  	    if($this->_check_image_support()){
	  	      //read file for gd stream;
	  	      if($this->read_file()){
	  	        return 1;
	  	      }
	  	    }else{
	  	      return 2;
	  	    }
	  	  }else{
			return 3;
		}
		}else{
		  return 4;
		}
	}	
	//resize image 
	function resize($width,$height){
	  if($this->dimension[0] > $this->dimension[1]){
	  $ratio = $width / $this->dimension[0];
	  	$this->newdimension[0] = $width;
		$this->newdimension[1] = round($this->dimension[1] * $ratio);
	}else{
	  $ratio = $height / $this->dimension[0];
	  	$this->newdimension[1] = $height;
		$this->newdimension[0] = round($this->dimension[0] * $ratio);
	}	   
	//create new image 
	if(!$this->image = @imagecreatetruecolor($this->newdimension[0],$this->newdimension[1])){

	  trigger_error('Failed open a new stream',E_USER_WARNING);return false;
	}else{
	  if(!@imagecopyresampled($this->image, $this->image_source, 0, 0, 0, 0, $this->newdimension[0], $this->newdimension[1], $this->dimension[0], $this->dimension[1])){
	     trigger_error('Failed to resample',E_USER_WARNING);
	    return false;
	}else{
	  return true;
	  }
	}
	}
	//give extension
	function getextension($bestand)
	{
    	return strtolower(end(explode('.',$bestand)));
	}
	function getlastdir($bestand)
	{
    	return strtolower(end(explode('/',$bestand)));

	}
	
	//create image
	function write_file($dir,$file){
		if(!file_exists($dir.$file)){
			if($this->dimension[2] == 1){
			  if(@!imagegif($this->image,$dir.$file)){
			    trigger_error('Failed to write to file',E_USER_WARNING);
			    return false;
			}else{
			  return true;
			}
			}elseif($this->dimension[2] == 2){
			  if(@!imagejpeg($this->image,$dir.$file)){
			     trigger_error('Failed to write to file',E_USER_WARNING);
			    return false;
			}else{
			  return true;
			  }
			}elseif($this->dimension[2] == 3){
			  if(!@imagepng($this->image,$dir.$file)){
			     trigger_error('Failed to write to file',E_USER_WARNING);
			    return false;
			}else{
			  return true;
			}
			}else{
			    return false;
			}
			}else{
			  return false;
			}
	}
	//upload file
	function move_uploaded_file($dir,$file){
	  if(is_uploaded_file($this->file)){
	    //file is geupload
	    if(@move_uploaded_file($this->file,$dir.$file)){
	      	return true;
	    }else{
			return false;
			trigger_error('Non such file or not enough access',E_USER_WARNING);
	    }
	}else{
	  	      trigger_error('File is not uploaded',E_USER_WARNING);
	      return false;
	}
	}  
	
	function read_dir_array($directory){
	  if(@$dir = opendir($directory))
	{
	
    while (false !== ($file = readdir($dir)))
    {
        if ($file != "." && $file != "..")
        {
            if(is_file($directory.$file))
            {
                $extensie = $this->getextension($file);
                $extensies = array('png','jpg','jpeg','gif');
                
                if(in_array($extensie,$extensies))
                {
                    $bestanden[] = $file;
                }                        
            }
                    
            if(is_dir($directory.$file))
            {
                if($file != 'thumb')
                {
                    $directories[] = $file;
                }                
            }
        } 
    }
    closedir($dir);
    $files = array();
    if(!empty($bestanden)){
	$files['images'] = $bestanden;
    }
	if(!empty($directories)){
    $files['dirs'] = $directories;
    }
    return $files;
    }else{
    return false;
  }
}
    
}
/*$file = './schipbreukeling/images/msc.png';

$image = new image;
$image->file = $file;
if($image->check_support() == 1){
$image->move_uploaded_file('./','test.png');
}else{
  echo 'No support';
}*/
  

?>