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.
   
    Depending on your PHP and GD versions this function is defined or not. With
    PHP 4.0.6 through 4.1.x this function always exists if the GD module is
    loaded, but calling it without GD2 being installed PHP will issue a fatal
    error and exit. With PHP 4.2.x this behaviour is different in issuing a
    warning instead of an error. Other versions only define this function, if
    the correct GD version is installed.
   
    
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 requires GD 2.0.1 or later.
Note: 
     This function will not work with GIF file formats.
    
    See also imagedestroy() and
    imagecreate().