(PECL gmagick >= Unknown) Sets the image type

(PECL gmagick >= Unknown) Returns certain pixel differences between images

(PECL gmagick >= Unknown) Returns the GraphicsMagick package name.

(PECL imagick 2.0.0) Gets the number of unique colors in the image

(PHP 4 >= 4.3.0, PHP 5, PHP 7) Calculate the sha1 hash of a string

(PECL gearman >= 0.5.0) Send data to all job servers to see if they echo it back [deprecated]

(PECL trader >= 0.2.0) Lowest value over a specified period

(PECL imagick 2.0.0) Compares image channels of an image to a reconstructed image

(PECL event >= 1.2.6-beta) Sets the timeout for the connection

(PHP 5 >= 5.3.0, PHP 7, PECL intl >= 1.0.0) Format the message