(PHP 5 >= 5.3.0, PHP 7) Gets function short name

(PHP >= 5.4.0) Returns this pointer bound to closure

(PHP 5, PHP 7) Checks if is internal public bool

(PHP 5, PHP 7) Gets file name public string

(PHP 5, PHP 7) Clones function final private

(PHP 5, PHP 7) Checks if deprecated public bool

(PHP 5 >= 5.0.3, PHP 7) Gets number of parameters

(PHP 5 >= 5.3.0, PHP 7) Checks if function in namespace

(PHP 5, PHP 7) Gets starting line number public

(PHP 5 >= 5.3.0, PHP 7) Checks if closure