(PHP 4 >= 4.3.2, PHP 5, PHP 7) Set the flag to save full alpha channel information (as opposed to single-color

(PHP 5, PHP 7) Applies a filter to an image bool

(PHP 4, PHP 5, PHP 7) Draw a string horizontally

(PHP 5 >= 5.5.0, PHP 7) Concat two matrices (as in doing many ops in one go)

(PHP 4, PHP 5, PHP 7) Draw a filled rectangle

(PHP 5 >= 5.5.0, PHP 7) Crop an image automatically using one of the available modes

(PHP 4, PHP 5, PHP 7) Draw a rectangle bool imagerectangle

(PHP 4 >= 4.0.7, PHP 5, PHP 7) Create a new image from GD2 file or URL

(PHP 4, PHP 5, PHP 7) Flood fill to specific color

(PHP 4, PHP 5, PHP 7) Get image height int imagesy