如何针对这种情况编写更好的代码？

Question

I want to avoid using to nested if statements

if (! is_null($user)){
    if($user->id == $currentUser->id){
       echo 'its for me';
    }else{
        echo 'its not for me';
    }
}else{
    echo 'its not for me';
}

And please note I do not want to use return statements

Answer 1

You can write something like this if the else in both cases it's the same.

if (!is_null($user) && $user->id == $currentUser->id){
    echo 'its for me';
} else {
    echo 'its not for me';
}

Answer 2

You could try something like this:

isset function and === operator makes it better.

 if (isset($user) && $user->id === $currentUser->id) {

    echo 'its for me';

 } else {

    echo 'its not for me';
 }

Hope this helps.

Peace! xD

Answer 3

echo 'Its' . (!is_null($user) && $user->id == $currentUser->id ? ' ' : ' not') . ' for me';

在某些条件下，三元运算符可以使if / else子句非常短。