The woocommerce_checkout_process hook is very useful when you want to validate anything before the order is processed.
add_action('woocommerce_checkout_process', 'woocommerce_get_data', 10);
function woocommerce_get_data(){
$cart = array();
$items = WC()->cart->get_cart();
foreach($items as $i=>$fetch){
$item = $fetch['data']->post;
$cart[]=array(
'code' => $fetch['product_id'],
'name' => $item->post_title,
'description' => $item->post_content,
'quantity' => $fetch['quantity'],
'amount' => get_post_meta($fetch['product_id'], '_price', true)
);
}
$user = wp_get_current_user();
$data = array(
'total' => WC()->cart->total,
'cart' => $cart,
'user' => array(
'id' => $user->ID,
'name' => join(' ',array_filter(array($user->user_firstname, $user->user_lastname))),
'mail' => $user->user_email,
)
);
$_SESSION['woo_data']=json_encode($data);
}
