source/Core/Module/Module.php
public function isActive()
    {
        $blActive = false;
        $sId = $this->getId();
        if (!is_null($sId)) {
            $blActive = !$this->_isInDisabledList($sId);
            if ($blActive && $this->hasExtendClass()) {
                $blActive = $this->_isExtensionsActive();
            }
        }

        return $blActive;
    }
public function isActive()
    {
        $blActive = false;
        $sId = $this->getId();
        if (!is_null($sId)) {
            $blActive = !$this->_isInDisabledList($sId);
            if ($blActive && $this->hasExtendClass()) {
                $blActive = $this->_isExtensionsActive();
            }
        }

        return $blActive;
    }
public function isActive ( ) { $ blActive = false ; $ sId = $ this -> getId ( ) ; if ( ! is_null ( $ sId ) ) { $ blActive = ! $ this -> _isInDisabledList ( $ sId ) ; if ( $ blActive && $ this -> hasExtendClass ( ) ) { $ blActive = $ this -> _isExtensionsActive ( ) ; } } return $ blActive ; }
Check if extension is active

@return bool
Check if extension is active