if条件语句是代码中常用的判断条件的代码,相对于其他的条件判断语句,更为简单,所以深受广大程序员的喜欢,但是在只有2种情况下的判断,还有一种比if条件语句跟为简单的语句---三目运算符。 If语句可以判断多个条件,而三目运算符只能判断2个条件,从而简化了,if,else的写法。 三目运算符: 其中,有2个整数A,B ,和...
Protect backend from multiple form submits in Laravel I'm trying to protect my backend from multiple post requests to avoid duplicate data on the database and the server overload. I've already blocked the frontend disabling the submit button after a firs......
Hello, my friends. I have this error. ParseError PHP 8.1.6 LARAVEL 9.37.0 syntax error, unexpected end of file, expecting "elseif" or "else" or "endif" My function is STORE is the following. public function store(Request
Frankly, this is not my task here. I am here to make you, the maintainers of Laravel, aware of a bug in your code, or well if you want to state that as limitation you do not want to address, as a problem in your documentation. I would assume, that you as maintainers have an ...
如果两个引用指向的不是同一个对象，那么==就不成立，即便两个引用的内容是一样的。因此，结果 ...
Laravel Version: 5.7.19 PHP Version: 7.1.4 Description: I had noted that a few records managed to reach the DB which should not have passed validation. In my form request I have the following withValidator function. public function withValidator($validator) { //All rules have passed, conver...
How can I identify errors in my JavaScript programs? Solution 1: JavaScript offers great flexibility when it comes to verifying "null" values. Assuming you need to find empty strings, you can use this more straightforward code. if(!pass || !cpass || !email || !cemail || !user){ ...
With regards to the boolean, I tried the Laravel docs: return DB::table('orders')->where('finalized', 1)->exists(); however, after changing the values for this app, the @if statement read it as if any bidderinterested exists. So, the auth()->userwas not acting as the conditional....
However, like any development tool, it can sometimes present issues - one of the most frustrating being when Tailwind CSS doesn't compile as expected. Whether you're using a traditional setup, a build tool like Webpack or Vite, or a framework like Next.js or Laravel, understanding why ...
For ( in ) statements must be filtered with an if, For example, if you have const [products, setProducts] = useState ( []). Why you do not set products = [] instead, you use the setProducts. check if an element exists laravel. Property 'carousel' has no initializer and is not de...