Update
As Reigel suggested, it should be more appropriated in "Order received" end point (thankyou page). Here we target the Order total instead (as cart object doesn't exist anymore).
So the code should be:
add_action('wp_head','google_tag_manager_checkout_conversion_script' );
function google_tag_manager_checkout_conversion_script() {
// Only on "Order received" page
if( ! is_wc_endpoint_url('order-received') )
return; // Exit
global $wp;
$order_id = absint( $wp->query_vars['order-received'] );
$order_key = isset( $_GET['key'] ) ? wc_clean( $_GET['key'] ) : '';
if ( empty($order_id) || $order_id == 0 )
return; // Exit
$order = wc_get_order( $order_id );
if ( $order->get_order_key() != $order_key )
return; // Exit
// Get Order total amount and Order transaction ID
$order_total = (float) $order->get_total();
$transaction_id = $order->get_transaction_id();
?>
<script async src="https://www.googletagmanager.com/gtag/js?id=AW-806400000"></script>
<script>
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments);}
gtag('js', new Date());
gtag('config', 'AW-806400000"');
gtag('event', 'conversion', {
'send_to': 'AW-806400000"/iHbjCOSfAewkasdowew',
'value': <?php echo $order_total; ?>,
'currency': 'USD',
'transaction_id': '<?php echo $transaction_id; ?>'
});
</script>
<?php
}
Code goes in function.php file of your active child theme (or active theme). Tested and works.
This should work better as you get the transaction ID this time.
Original answer to the original question that how to get to cart total for this Adwords script…
To display the total cart amount you will use:
<?php echo number_format( WC()->cart->total + WC()->cart->total_tax, 2 ); ?>
Targeting checkout page, you can try the following hooked function, that will add your script in the <head> section with the correct total cart amount:
add_action('wp_head','google_tag_manager_order_received_conversion_script' );
function google_tag_manager_order_received_conversion_script() {
// Only on checkout page
if( ! ( is_checkout() && ! is_wc_endpoint_url() ) ) return;
?>
<script async src="https://www.googletagmanager.com/gtag/js?id=AW-806400000"></script>
<script>
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments);}
gtag('js', new Date());
gtag('config', 'AW-806400000"');
gtag('event', 'conversion', {
'send_to': 'AW-806400000"/iHbjCOSfAewkasdowew',
'value': <?php echo number_format( WC()->cart->total + WC()->cart->total_tax, 2 ); ?>,
'currency': 'USD',
'transaction_id': ''
});
</script>
<?php
}
Code goes in function.php file of your active child theme (or active theme). Tested and works.
But it seems strange as there is not yet any transaction ID to set in it…
