woocommerce_proceed_to_checkout action-hookWC 1.0

Usage

add_action( 'woocommerce_proceed_to_checkout', 'wp_kama_woocommerce_proceed_to_checkout_action' );

/**
 * Function for `woocommerce_proceed_to_checkout` action-hook.
 * 
 * @return void
 */
function wp_kama_woocommerce_proceed_to_checkout_action(){

	// action...
}

Where the hook is called

In file: /templates/cart/cart-totals.php
woocommerce_proceed_to_checkout
woocommerce/templates/cart/cart-totals.php 107
<?php do_action( 'woocommerce_proceed_to_checkout' ); ?>

Where the hook is used in WooCommerce

woocommerce/includes/wc-template-hooks.php 240
add_action( 'woocommerce_proceed_to_checkout', 'wc_get_pay_buttons', 10 );
woocommerce/includes/wc-template-hooks.php 241
add_action( 'woocommerce_proceed_to_checkout', 'woocommerce_button_proceed_to_checkout', 20 );