framework/web/Request.php
public function getETags()
    {
        if ($this->headers->has('If-None-Match')) {
            return preg_split('/[\s,]+/', str_replace('-gzip', '', $this->headers->get('If-None-Match')), -1, PREG_SPLIT_NO_EMPTY);
        }

        return [];
    }
public function getETags()
    {
        if ($this->headers->has('If-None-Match')) {
            return preg_split('/[\s,]+/', str_replace('-gzip', '', $this->headers->get('If-None-Match')), -1, PREG_SPLIT_NO_EMPTY);
        }

        return [];
    }
public function getETags ( ) { if ( $ this -> headers -> has ( 'If-None-Match' ) ) { return preg_split ( '/[\s,]+/' , str_replace ( '-gzip' , '' , $ this -> headers -> get ( 'If-None-Match' ) ) , - 1 , PREG_SPLIT_NO_EMPTY ) ; } return [ ] ; }
Gets the Etags.

@return array The entity tags
Gets the Etags .