(PHP 4 >= 4.3.2, PHP 5, PHP 7) Should antialias functions be used or not

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Create a new image from the image stream in the string

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

(PHP 5 >= 5.5.0, PHP 7) Set the interpolation method

(PHP 4, PHP 5) Load a PostScript Type 1 font from file

(PHP 4, PHP 5, PHP 7) Write text to the image using TrueType fonts

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

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

(PHP 5 >= 5.5.0, PHP 7) Scale an image using the given new width and height

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