假设我有以下函数签名:
function test(varible1, varible2) {}
当我调用它时,我只传递一个参数:
test(5);
所以在test功能内variable2仍然会被创造,但是会有价值undefined.我想知道js引擎是否仍在内存中为该变量分配32位？
我需要在woocommerce网站上禁用某些类别的付款。到目前为止，我已经找到了此代码，该代码仅适用于1类。有谁知道如何使它适用于多个类别？谢谢
<?php
/*
* A simple filter to disable a user-specified payment gateway when a product with a user-specified category is added to the shopping cart
* - Note: If multiple products are added and only one has a matching category, it will remove the payment gateway
* Requires:
* payment_NAME : One of the five hardcoded Woocommerce standard types of payment gateways - paypal, cod, bacs, cheque or mijireh_checkout
* category_ID : The ID of the category for which …