<?
//set width, height and grid size of your map 
	$width = 200;
	$height = 200;	
	$grid_size = 7;	
 
//select how many object will be there on the map
	$n = 4;
 
//set X and Y position for each object
	$array[0]['x']=1;
	$array[0]['y']=1; 
 
	$array[1]['x']=3;
	$array[1]['y']=5;	 
 
	$array[2]['x']=6;
	$array[2]['y']=7;	 
 
	$array[3]['x']=0;
	$array[3]['y']=0;
 
//Create a new image  
    $image = ImageCreate($width, $height);  
 
//Make 3 new colors, background, grid and block 
    $bground = ImageColorAllocate($image, 200, 200, 200);
    $grid = ImageColorAllocate($image, 100, 100, 100);
    $block = ImageColorAllocate($image, 0, 0, 0);
 
//Fill background with background color.
    ImageFill($image, 0, 0, $bground);  
 
//If grid size is not zero, draw grid  
    if($grid_size)
   	{
   		$step = $grid_size; 
 
//Draw horizontal lines 
   		while($step < $height)
  			{
			imageline ($image,   0,  $step, $width, $step, $grid);
   				$step += $grid_size;
   			} 
 
  		$step = $grid_size;
 
//Draw vertical lines 
   		while($step < $width)
   			{
			imageline ($image,   $step,  0, $step, $height, $grid);
			$step += $grid_size;
   			}  
   	}
 
//for each element in array 
    for($i=0;$i<$n;$i++)
    {
 
//get X and Y position
   		$x1 = $array[$i]['x']; 
 		$y1 = $array[$i]['y'];
 
//if grid is larger then 0 then snap to it 	
 		if($grid_size)
 		{
 			$x1 = $x1 * $grid_size;
 			$y1 = $y1 * $grid_size;
 		} 
 
//make thing on mape same size as grid 	
 		$x2 = $x1 + $grid_size;
   		$y2 = $y1 + $grid_size; 
 
//draw it  
    	imagefilledrectangle ($image,   $x1,$y1,$x2,$y2, $block);    
 
	}
 
//tell the browser that this file act as an image
    header("Content-Type: image/jpeg"); 
 
//output the image in jpeg format 
    ImageJpeg($image);
 
//free up resources
    ImageDestroy($image);
?>