WordPress at a glance
function is not described

WC_Gateway_COD::is_available() public WC 1.0

Check If The Gateway Is Available For Use.

{} It's a method of the class: WC_Gateway_COD{}

Hooks from the method
Return

true|false. Nothing.

Usage

$WC_Gateway_COD = new WC_Gateway_COD();
$WC_Gateway_COD->is_available();

Code of WC_Gateway_COD::is_available() WC 5.3.0

<?php
public function is_available() {
	$order          = null;
	$needs_shipping = false;

	// Test if shipping is needed first.
	if ( WC()->cart && WC()->cart->needs_shipping() ) {
		$needs_shipping = true;
	} elseif ( is_page( wc_get_page_id( 'checkout' ) ) && 0 < get_query_var( 'order-pay' ) ) {
		$order_id = absint( get_query_var( 'order-pay' ) );
		$order    = wc_get_order( $order_id );

		// Test if order needs shipping.
		if ( $order && 0 < count( $order->get_items() ) ) {
			foreach ( $order->get_items() as $item ) {
				$_product = $item->get_product();
				if ( $_product && $_product->needs_shipping() ) {
					$needs_shipping = true;
					break;
				}
			}
		}
	}

	$needs_shipping = apply_filters( 'woocommerce_cart_needs_shipping', $needs_shipping );

	// Virtual order, with virtual disabled.
	if ( ! $this->enable_for_virtual && ! $needs_shipping ) {
		return false;
	}

	// Only apply if all packages are being shipped via chosen method, or order is virtual.
	if ( ! empty( $this->enable_for_methods ) && $needs_shipping ) {
		$order_shipping_items            = is_object( $order ) ? $order->get_shipping_methods() : false;
		$chosen_shipping_methods_session = WC()->session->get( 'chosen_shipping_methods' );

		if ( $order_shipping_items ) {
			$canonical_rate_ids = $this->get_canonical_order_shipping_item_rate_ids( $order_shipping_items );
		} else {
			$canonical_rate_ids = $this->get_canonical_package_rate_ids( $chosen_shipping_methods_session );
		}

		if ( ! count( $this->get_matching_rates( $canonical_rate_ids ) ) ) {
			return false;
		}
	}

	return parent::is_available();
}