PHP - if == not working for 0 or ""

Posted by user2933212 on Stack Overflow See other posts from Stack Overflow or by user2933212
Published on 2014-05-30T03:05:12Z Indexed on 2014/05/30 3:26 UTC
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php

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if-statement

I am checking the validation of the request with an if query,

if ($request_userid == $userid) {
...
}

Thats working as expected. But further testing has shown, that if $request_userid or $userid is 0 or "", then the condition is true and the script runs the if query but it shouldn't.

I am currently solving it with:

if ($userid == "" ) {
exit ("exit");
}

But I don't think that this is the right way?

Can you explain why it doesn’t work with the if query and what would be the correct way to check it?

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