source/Core/Session.php
public function isSidNeeded($sUrl = null)
    {
        if ($this->isAdmin()) {
            return true;
        }

        $oConfig = \OxidEsales\Eshop\Core\Registry::getConfig();

        if (!$this->_getSessionUseCookies() || ($sUrl && $this->_getCookieSid() && !$oConfig->isCurrentProtocol($sUrl))) {
            // switching from ssl to non ssl or vice versa?
            return true;
        }

        if ($sUrl && !$oConfig->isCurrentUrl($sUrl)) {
            return true;
        } elseif ($this->_blSidNeeded === null) {
            // setting initial state
            $this->_blSidNeeded = false;

            // no SIDs for search engines
            if (!\OxidEsales\Eshop\Core\Registry::getUtils()->isSearchEngine()) {
                // cookie found - SID is not needed
                if (\OxidEsales\Eshop\Core\Registry::getUtilsServer()->getOxCookie($this->getName())) {
                    $this->_blSidNeeded = false;
                } elseif ($this->_forceSessionStart()) {
                    $this->_blSidNeeded = true;
                } else {
                    // no cookie, so must check session
                    if ($blSidNeeded = $this->getVariable('blSidNeeded')) {
                        $this->_blSidNeeded = true;
                    } elseif ($this->_isSessionRequiredAction() && !count($_COOKIE)) {
                        $this->_blSidNeeded = true;

                        // storing to session, performance..
                        $this->setVariable('blSidNeeded', $this->_blSidNeeded);
                    }
                }
            }
        }

        return $this->_blSidNeeded;
    }
public function isSidNeeded($sUrl = null)
    {
        if ($this->isAdmin()) {
            return true;
        }

        $oConfig = \OxidEsales\Eshop\Core\Registry::getConfig();

        if (!$this->_getSessionUseCookies() || ($sUrl && $this->_getCookieSid() && !$oConfig->isCurrentProtocol($sUrl))) {
            // switching from ssl to non ssl or vice versa?
            return true;
        }

        if ($sUrl && !$oConfig->isCurrentUrl($sUrl)) {
            return true;
        } elseif ($this->_blSidNeeded === null) {
            // setting initial state
            $this->_blSidNeeded = false;

            // no SIDs for search engines
            if (!\OxidEsales\Eshop\Core\Registry::getUtils()->isSearchEngine()) {
                // cookie found - SID is not needed
                if (\OxidEsales\Eshop\Core\Registry::getUtilsServer()->getOxCookie($this->getName())) {
                    $this->_blSidNeeded = false;
                } elseif ($this->_forceSessionStart()) {
                    $this->_blSidNeeded = true;
                } else {
                    // no cookie, so must check session
                    if ($blSidNeeded = $this->getVariable('blSidNeeded')) {
                        $this->_blSidNeeded = true;
                    } elseif ($this->_isSessionRequiredAction() && !count($_COOKIE)) {
                        $this->_blSidNeeded = true;

                        // storing to session, performance..
                        $this->setVariable('blSidNeeded', $this->_blSidNeeded);
                    }
                }
            }
        }

        return $this->_blSidNeeded;
    }
public function isSidNeeded ( $ sUrl = null ) { if ( $ this -> isAdmin ( ) ) { return true ; } $ oConfig = \ OxidEsales \ Eshop \ Core \ Registry :: getConfig ( ) ; if ( ! $ this -> _getSessionUseCookies ( ) || ( $ sUrl && $ this -> _getCookieSid ( ) && ! $ oConfig -> isCurrentProtocol ( $ sUrl ) ) ) { // switching from ssl to non ssl or vice versa? return true ; } if ( $ sUrl && ! $ oConfig -> isCurrentUrl ( $ sUrl ) ) { return true ; } elseif ( $ this -> _blSidNeeded === null ) { // setting initial state $ this -> _blSidNeeded = false ; // no SIDs for search engines if ( ! \ OxidEsales \ Eshop \ Core \ Registry :: getUtils ( ) -> isSearchEngine ( ) ) { // cookie found - SID is not needed if ( \ OxidEsales \ Eshop \ Core \ Registry :: getUtilsServer ( ) -> getOxCookie ( $ this -> getName ( ) ) ) { $ this -> _blSidNeeded = false ; } elseif ( $ this -> _forceSessionStart ( ) ) { $ this -> _blSidNeeded = true ; } else { // no cookie, so must check session if ( $ blSidNeeded = $ this -> getVariable ( 'blSidNeeded' ) ) { $ this -> _blSidNeeded = true ; } elseif ( $ this -> _isSessionRequiredAction ( ) && ! count ( $ _COOKIE ) ) { $ this -> _blSidNeeded = true ; // storing to session, performance.. $ this -> setVariable ( 'blSidNeeded' , $ this -> _blSidNeeded ) ; } } } } return $ this -> _blSidNeeded ; }
Checks if cookies are not available. Returns TRUE of sid needed

@param string $sUrl if passed domain does not match current - returns true (optional)

@return bool
Checks if cookies are not available . Returns TRUE of sid needed