从网址中删除结尾斜杠

Question

I'm trying to make a url safe for later use. So I want to strip the slashes from the end of the url string.

Actually I'm doing:

function getUrl() {
    $url = "url/with/ending/slashes///";
    if(..someConditions..) {
        $url = false;
    }
    return $url
}

$a = getUrl();

while($a !== $a = rtrim($a, '/'));

So the string can have a string value or a boolean value

There will be any unexpected result or downside when dealing with unexpected values of the string? (like specific strings, booleans values, integers, etc.?)

Answer 1

Check if result is not false before moving forward,

$a = getUrl();
if($a){
   while($a !== $a = rtrim($a, '/'));
}