(PHP 5 >= 5.4.0, PHP 7) Get the size of an image from a string

(PHP 4, PHP 5, PHP 7) Draws an arc bool imagearc

(PHP 4, PHP 5, PHP 7) Draw a line bool imageline

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Retrieve information about the currently installed GD library

(PHP 5 >= 5.5.0, PHP 7) Flips an image using a given mode

(PHP 4 >= 4.0.1, PHP 5, PHP 7) Get the index of the color which has the hue, white and blackness

(PHP 4, PHP 5, PHP 7) Create a new image from file or URL

(PHP 4 >= 4.0.1, PHP 5, PHP 7) Copy the palette from one image to another

(PHP 4, PHP 5, PHP 7) Get the colors for an index

(PHP 4, PHP 5, PHP 7) Copy and resize part of an image