woocommerce_paypal_args │ filter-hook │ WC 1.0

Usage

add_filter( 'woocommerce_paypal_args', 'wp_kama_woocommerce_paypal_args_filter', 10, 2 );

/**
 * Function for `woocommerce_paypal_args` filter-hook.
 * 
 * @param  $array_merge 
 * @param  $order       
 *
 * @return 
 */
function wp_kama_woocommerce_paypal_args_filter( $array_merge, $order ){

	// filter...
	return $array_merge;
}

$array_merge

-

$order

-

Where the hook is called

return apply_filters(
	'woocommerce_paypal_args',
	array_merge(
		$this->get_transaction_args( $order ),
		$this->get_line_item_args( $order, true )
	),
	$order
);

$paypal_args = apply_filters(
	'woocommerce_paypal_args',
	array_merge(
		$this->get_transaction_args( $order ),
		$this->get_line_item_args( $order, $force_one_line_item )
	),
	$order
);

Where the hook is used in WooCommerce