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

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

(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

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Draw a partial arc and fill it

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Get the index of the specified color + alpha

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

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

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