Superglobals

Superglobals

Built-in variables that are always available in all scopes

Several predefined variables in PHP are "superglobals", which means they are available in all scopes throughout a script. There is no need to do to access them within functions or methods.

These superglobal variables are:

$GLOBALS``$_SERVER``$_GET``$_POST``$_FILES``$_COOKIE``$_SESSION``$_REQUEST``$_ENV

Opmerking: > ### Variable availability

By default, all of the superglobals are available but there are
directives that affect this availability. For further information, refer
to the documentation for
.

variables_order

Opmerking: > ### Variable variables

Superglobals cannot be used as 

inside functions or class methods.

variable variables

variable scopevariables_orderThe filter extension