imagecolorclosesthwb
  Get the index of the color which has the hue, white and blackness
  
 
  Description
  
   int imagecolorclosesthwb
    ( resource $image
   , int $red
   , int $green
   , int $blue
   )
  
  
 
  Parameters
  
   
    - 
image
- 
An image resource, returned by one of the image creation functions,
such as imagecreatetruecolor. 
- 
     red
- 
      Value of red component. 
- 
     green
- 
      Value of green component. 
- 
     blue
- 
      Value of blue component. 
 
 
  Return Values
  
   Returns an integer with the index of the color which has 
   the hue, white and blackness nearest the given color.
  
  
 
  Examples
  
   
    Example #1 Example of using imagecolorclosesthwb
    
<?php
$im = imagecreatefromgif('php.gif');
echo 'HWB: ' . imagecolorclosesthwb($im, 116, 115, 152);
imagedestroy($im);
?>
     
    The above example will output
something similar to: