(PHP 5, PHP 7) Returns the string representation of the Reflection method object.

(PHP 5 >= 5.2.0, PHP 7) Gets multiple variables and optionally filters them

(PHP 5, PHP 7) Gets a

(PHP 4, PHP 5, PHP 7) Exchanges all keys with their associated values in an array

(PHP 4 >= 4.0.1, PHP 5, PHP 7) Computes the difference of arrays

(PHP 4, PHP 5, PHP 7) Assign variables as if they were an array

(PHP 5 >= 5.4.0, PHP 7) Returns an array of all declared traits

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Returns an array of all defined functions

(PHP 4, PHP 5, PHP 7) Returns the number of arguments passed to the function

(PHP >= 5.4.0) Returns whether this parameter can be passed by value