(PECL memcache >= 0.2.0) Turn debug output on/off

(PECL event >= 1.4.0-beta) Sets maximum HTTP header size

(PECL event >= 1.2.6-beta) Copies out specified number of bytes from the front of the buffer

(PHP 4 >= 4.0.5, PECL yaz >= 0.9.0) Prepares for retrieval (Z39.50 present)

(PECL svn >= 0.2.0) Creates a new empty file, returns true if all is ok, false otherwise

(PHP 4, PHP 5, PHP 7) Sends a SITE command to the server

(PHP 5 >= 5.5.0, PHP 7) Pause and unpause a connection

(PECL gupnp >= 0.1.0) Create a new context

(PECL svm >= 0.1.0) Predict a value for previously unseen data

(PECL stomp >= 0.1.0) Removes an existing subscription