PHP Manual: Resource Types

Resource Types

This extension defines the following resource types:

**List of resource types in GD**
Name	Description	Notes
gd	Image resource, used by functions like imagecreatefrompng
gd font	Font resource returned by imageloadfont
gd PS font	PostScript Type 1 font resource, returned by imagepsloadfont	Removed as of PHP 7.0.0.
gd PS encoding	PostScript Type 1 encoding resource, returned by imagepsencodefont	Removed as of PHP 7.0.0.