(PHP 3 >= 3.0.15, PHP 4 >= 4.0.1, PHP 5)
imagewbmp -- Output image to browser or file
Description
bool 
imagewbmp ( resource image [, string filename [, int foreground]] )
     imagewbmp() creates the
     WBMP file in filename from the image
     image. The image argument
     is the return from the imagecreatetruecolor() function.
    
     The filename argument is optional, and if left off, the raw image
     stream will be output directly.
     By sending an image/vnd.wap.wbmp content-type
     using header(), you can create
     a PHP script that outputs WBMP images directly.
     
Note: 
       WBMP support is only available if PHP was compiled
       against GD-1.8 or later.
      
     Using the optional foreground
     parameter, you can set the foreground color. Use an
     identifier obtained from imagecolorallocate().
     The default foreground color is black.
    
     See also image2wbmp(), imagepng(),
     imagegif(), imagejpeg(),
     imagetypes().