WordPress at Your Fingertips
filter is not described

wc_session_expiration filter-hook . WC 1.0

Set session expiration.

Usage

add_filter( 'wc_session_expiration', 'filter_function_name_2623' );
function filter_function_name_2623( $60 * 60 * 48 ){
	// filter...

	return $60 * 60 * 48;
}
$60 60 48
-

Where the hook is called

WC_Session_Handler::set_session_expiration()
wc_session_expiration
woocommerce/includes/class-wc-session-handler.php 164
$this->_session_expiration = time() + intval( apply_filters( 'wc_session_expiration', 60 * 60 * 48 ) ); // 48 Hours.

Where in WP core the hook is used WooCommerce

Usage not found.