eventespresso / event-espresso-core

		}

		$key_bits = str_split ( str_pad ( '', strlen( $text_string ), $this->get_encryption_key(), STR_PAD_RIGHT ));

		$string_bits = str_split( $text_string );

		foreach ( $string_bits as $k =>$v ) {

			$temp = ord( $v ) + ord ( $key_bits[$k] );

			$string_bits[$k] = chr ( $temp > 255 ? ( $temp - 256 ) : $temp );

		}

        return function_exists('base64_encode') ? base64_encode( implode( '', $string_bits ) ) : implode('', $string_bits);

	}

        $encrypted_text = $this->valid_base_64($encrypted_text) ? base64_decode($encrypted_text) : $encrypted_text;

		$key_bits = str_split ( str_pad ( '', strlen ( $encrypted_text ), $this->get_encryption_key(), STR_PAD_RIGHT ));

		$string_bits = str_split ( $encrypted_text );

		foreach ( $string_bits as $k => $v ) {

			$temp = ord ( $v ) - ord ( $key_bits[$k] );

			$string_bits[$k] = chr ( $temp < 0 ? ( $temp + 256 ) : $temp );

		}

        return implode( '', $string_bits );

	}