Returns a value from a superglobal array corresponding to the given key.

Option: the key to look up within the superglobal array

Also, it is possible that a superglobal variable is not populated by PHP because of the settings in the variables-order ini directive. In this case the converter will return an empty value.

Type hierarchy

Class usage:

This class is not referred by any other class/interface/traits in packagist packages.