PHP imagecreatetruecolor function

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imagecreatetruecolor

(PHP 4 >= 4.0.6, PHP 5)

imagecreatetruecolor() returns an image identifier
representing a black image of the specified 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.

Image width

Image height

Returns an image resource identifier on success, FALSE on errors.

Example 1.
Creating a new GD image stream and outputting an image.

header ("Content-type: image/png");
$im = @imagecreatetruecolor(120, 20)
      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);

The above example will output
something similar to:

Note: This function requires GD 2.0.1 or later (2.0.28 or later is recommended).

Note:
This function will not work with GIF file formats.