reflection.php
public function getInterfaceMethods()
    {
        $methods = array();
        $interfaces = $this->getInterfaces();
        foreach ($interfaces as $interface) {
            $methods = array_merge($methods, get_class_methods($interface));
        }

        return array_unique($methods);
    }
public function getInterfaceMethods()
    {
        $methods = array();
        $interfaces = $this->getInterfaces();
        foreach ($interfaces as $interface) {
            $methods = array_merge($methods, get_class_methods($interface));
        }

        return array_unique($methods);
    }
Gets the list of methods for the implemented interfaces only.

@returns array      List of enforced method signatures.