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

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

(PHP 5 >= 5.5.0, PHP 7) Output a WebP image to browser or file

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Rotate an image with a given angle

(PHP 4, PHP 5, PHP 7) Get font height int imagefontheight

(PHP 4, PHP 5, PHP 7) Find out the number of colors in an image's palette

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Set the tile image for filling

(PHP 4, PHP 5, PHP 7) Output a PNG image to either the browser or a file

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Makes the colors of the palette version of an image more closely match the

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