readline_completion_function

(PHP 4, PHP 5, PHP 7, PHP 8)

readline_completion_function — Registers a completion function

readline_completion_function(callable $callback): bool

This function registers a completion function. This is the same kind of functionality you'd get if you hit your tab key while using Bash.

callback: You must supply the name of an existing function which accepts a partial command line and returns an array of possible matches.

Returns true on success or false on failure.