php man page for imageistruecolor

IMAGEISTRUECOLOR(3)							 1						       IMAGEISTRUECOLOR(3)

imageistruecolor - Finds whether an image is a truecolor image

SYNOPSIS
       bool imageistruecolor (resource	$image)

DESCRIPTION
       imageistruecolor(3) finds whether the image $image is a truecolor image.

PARAMETERS
	      o $
		image -An image resource, returned by one of the image creation functions, such as imagecreatetruecolor(3).

RETURN VALUES
	Returns TRUE if the $image is truecolor, FALSE otherwise.

EXAMPLES
       Example #1

	      Simple detection of true color image instances using imageistruecolor(3)

	      <?php
	      // $im is an image instance

	      // Check if image is a true color image or not
	      if(!imageistruecolor($im))
	      {
		  // Create a new true color image instance
		  $tc = imagecreatetruecolor(imagesx($im), imagesy($im));

		  // Copy over the pixels
		  imagecopy($tc, $im, 0, 0, 0, 0, imagesx($im), imagesy($im));
		  imagedestroy($im);

		  $im = $tc;
		  $tc = NULL;

		  // OR use imagepalettetotruecolor()
	      }

	      // Continue working with image instance
	      ?>

NOTES
       Note

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

SEE ALSO
       imagecreatetruecolor(3), imagepalettetotruecolor(3).

PHP Documentation Group 												       IMAGEISTRUECOLOR(3)