src/Form/Container.php
public function isValid()
    {
        $isValid = true;
        foreach ($this->activeForms as $activeFormKey) {
            $activeForm = $this->getForm($activeFormKey);
            $isValid &= $activeForm->isValid();
        }
        return $isValid;
    }
public function isValid()
    {
        $isValid = true;
        foreach ($this->activeForms as $activeFormKey) {
            $activeForm = $this->getForm($activeFormKey);
            $isValid &= $activeForm->isValid();
        }
        return $isValid;
    }
public function isValid ( ) { $ isValid = true ; foreach ( $ this -> activeForms as $ activeFormKey ) { $ activeForm = $ this -> getForm ( $ activeFormKey ) ; $ isValid &= $ activeForm -> isValid ( ) ; } return $ isValid ; }
Return isValid

@return bool
Return isValid