php man page for imagetypes

IMAGETYPES(3)								 1							     IMAGETYPES(3)

imagetypes - Return the image types supported by this PHP build

SYNOPSIS
       int imagetypes (void  )

DESCRIPTION
	Returns the image types supported by the current PHP installation.

RETURN VALUES
	Returns  a  bit-field  corresponding to the image formats supported by the version of GD linked into PHP. The following bits are returned,
       IMG_GIF | IMG_JPG | IMG_PNG | IMG_WBMP | IMG_XPM.

EXAMPLES
       Example #1

	      Checking for PNG support

	      <?php
	      if (imagetypes() & IMG_PNG) {
		  echo "PNG Support is enabled";
	      }
	      ?>

PHP Documentation Group 													     IMAGETYPES(3)