(PECL runkit7 >= Unknown)
runkit7_function_rename — Change a function's name
$source_name, string $target_name): boolNote: By default, only userspace functions may be removed, renamed, or modified. In order to override internal functions, you must enable the
runkit.internal_overridesetting in php.ini.
source_nameCurrent function name
target_nameNew function name
Returns true on success or false on failure.