Disable PayPal for Multi-Item Checkout

function pw_edd_disable_paypal_on_multi_item_checkout( $gateways ) {

	global $wp_query;

	if ( ! empty( $wp_query ) && edd_is_checkout() && count( edd_get_cart_contents() ) > 1 ) {

		$paypal_gateways = array(

			'paypal',

			'paypalexpress',

			'paypalpro',

			'paypal_commerce',

		);

		foreach ( $paypal_gateways as $paypal ) {

			if ( ! empty( $gateways[ $paypal ] ) ) {

				unset( $gateways[ $paypal ] );

			}

		}

	}

	return $gateways;

}

add_filter( 'edd_enabled_payment_gateways', 'pw_edd_disable_paypal_on_multi_item_checkout' );