public function scheme(): string
    {
        if (($scheme = &$this->cacheKey(__FUNCTION__)) !== null) {
            return $scheme; // Cached this already.
        }
        return $scheme = $this->isSsl() ? 'https' : 'http';
    }
public function scheme(): string
    {
        if (($scheme = &$this->cacheKey(__FUNCTION__)) !== null) {
            return $scheme; // Cached this already.
        }
        return $scheme = $this->isSsl() ? 'https' : 'http';
    }
public function scheme ( ) : string { if ( ( $ scheme = & $ this -> cacheKey ( __FUNCTION__ ) ) !== null ) { return $ scheme ; // Cached this already. } return $ scheme = $ this -> isSsl ( ) ? 'https' : 'http' ; }
Current scheme; lowercase.

@since 150424 Initial release.

@return string Current scheme; lowercase.
Current scheme ; lowercase .