The runkit extension provides means to modify constants,
user-defined functions, and user-defined classes.
It also provides for custom superglobal variables
and embeddable sub-interpreters via sandboxing.
This package is meant as a feature added replacement for the
When compiled with the --enable-runkit=classkit
option to ./configure, it will export classkit compatible function definitions
Modifying Constants, Functions, Classes, and Methods
works with all releases of PHP 4 and PHP 5. No special requirements are
Custom Superglobals are only available in PHP 4.2.0 or later.
Sandboxing requires PHP 5.1.0 or later, or
PHP 5.0.0 with a special TSRM patch applied.
Regardless of which version of PHP is in use it must be compiled with the
See the README file in the runkit package for additional information.
runkit_import() flag indicating that
if any of the imported functions, methods, constants,
or properties already exist, they should be replaced with
the new definitions. If this flag is not set, then any
imported definitions which already exist will be discarded.