(PHP 4, PHP 5, PHP 7) De-allocate a color for an image

(PHP 4, PHP 5, PHP 7) Embeds binary IPTC data into a JPEG image

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Get the index of the specified color + alpha or its closest possible alternative

(PHP 4 >= 4.0.6, PHP 5, PHP 7) Set the style for line drawing

(PHP 5 >= 5.1.0, PHP 7) Apply a 3x3 convolution matrix, using coefficient and offset

(PHP 4, PHP 5, PHP 7) Get the index of the color of a pixel

(PHP 4, PHP 5, PHP 7) Set the color for the specified palette index

(PHP 4 >= 4.3.2, PHP 5, PHP 7) Allocate a color for an image

(PHP 4, PHP 5, PHP 7) Apply a gamma correction to a GD image

(PHP 4, PHP 5, PHP 7) Output image to browser or file