imagecreatetruecolor
    (PHP 4 >= 4.0.6)
imagecreatetruecolor -- Create a new true color image
Description
resource 
imagecreatetruecolor ( int x_size, int y_size)
    imagecreatetruecolor() returns an image identifier
    representing a black image of size x_size
    by y_size.
   
    
Example 1. 
      Creating a new GD image stream and outputting an image.
      <?php
header ("Content-type: image/png");
$im = @imagecreatetruecolor (50, 100)
      or die ("Cannot Initialize new GD image stream");
$text_color = imagecolorallocate ($im, 233, 14, 91);
imagestring ($im, 1, 5, 5,  "A Simple Text String", $text_color);
imagepng ($im);
imagedestroy ($im);
?> |  
  | 
   Note: 
     This function was added in PHP 4.0.6 and requires GD 2.0.1 or later.
    
Note: 
     This function will not work with GIF file formats.
    
    See also imagedestroy() and
    imagecreate().