source/Application/Component/BasketComponent.php
protected function getPersistedParameters($persistedParameters = null)
    {
        $persistedParameters = ($persistedParameters ?: \OxidEsales\Eshop\Core\Registry::getConfig()->getRequestParameter('persparam'));
        if (!is_array($persistedParameters)) {
            return null;
        }
        return array_filter($persistedParameters) ?: null;
    }
protected function getPersistedParameters($persistedParameters = null)
    {
        $persistedParameters = ($persistedParameters ?: \OxidEsales\Eshop\Core\Registry::getConfig()->getRequestParameter('persparam'));
        if (!is_array($persistedParameters)) {
            return null;
        }
        return array_filter($persistedParameters) ?: null;
    }
protected function getPersistedParameters ( $ persistedParameters = null ) { $ persistedParameters = ( $ persistedParameters ? : \ OxidEsales \ Eshop \ Core \ Registry :: getConfig ( ) -> getRequestParameter ( 'persparam' ) ) ; if ( ! is_array ( $ persistedParameters ) ) { return null ; } return array_filter ( $ persistedParameters ) ? : null ; }
Cleans and returns persisted parameters.

@param array $persistedParameters key-value parameters (optional). If not passed - takes parameters from request.

@return array|null cleaned up parameters or null, if there are no non-empty parameters
Cleans and returns persisted parameters .