woocommerce_get_checkout_payment_url │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_get_checkout_payment_url', 'wp_kama_woocommerce_get_checkout_payment_url_filter', 10, 2 );

/**
 * Function for `woocommerce_get_checkout_payment_url` filter-hook.
 * 
 * @param  $pay_url 
 * @param  $that    
 *
 * @return 
 */
function wp_kama_woocommerce_get_checkout_payment_url_filter( $pay_url, $that ){

	// filter...
	return $pay_url;
}

$pay_url

-

$that

-

Where the hook is called

return apply_filters( 'woocommerce_get_checkout_payment_url', $pay_url, $this );

Where the hook is used in WooCommerce