(PHP 5, PHP 7) Exports public static string Reflection::export

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Check for numeric character(s)

(PHP >= 5.4.0) Returns an array of names of traits used by this class

(PHP 7) Gets the file name of the currently executing generator

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

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

(PHP 4 >= 4.0.4, PHP 5, PHP 7) Call a callback with an array of parameters

(PHP 4 >= 4.1.0, PHP 5 < 5.4.0) Import GET/POST/Cookie variables into the global scope

(PHP 4, PHP 5, PHP 7) Find whether the type of a variable is integer

(PECL quickhash >= Unknown) This factory method creates a set from a string