(PHP 4, PHP 5, PHP 7) Reads the history bool

(PHP 4, PHP 5, PHP 7) Reads a line string readline

(PHP 4, PHP 5, PHP 7) Adds a line to the history

(PHP 4, PHP 5, PHP 7) Writes the history bool

(PHP 5 >= 5.1.0, PHP 7) Redraws the display

(PHP 5 >= 5.1.0, PHP 7) Reads a character and informs the readline callback interface when a line is received

(PHP 5 >= 5.1.0, PHP 7) Removes a previously installed callback handler and restores terminal settings

(PHP 5 >= 5.1.0, PHP 7) Initializes the readline callback interface and terminal, prints the prompt and returns

(PHP 4, PHP 5, PHP 7) Gets/sets various internal readline variables

(PHP 4, PHP 5, PHP 7) Clears the history bool