PHP Question
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Thread: PHP Question

  1. #1

    PHP Question

    Hi,

    I have a fairly simple PHP question that's baffling me. I use time() to set a session variable so I can lock someone out after too many bad login attempts, but I'm getting a really strange result with my code ->

    Code:
    $_SESSION["loginlocked"] = time();
    echo time() - $_SESSION["loginlocked"];
    I keep getting numbers like -1182493278

    If I echo them seperately I get correct integers e.g ->

    1182493410 | 1182493278 which add up to to the correct number of seconds since the session was set.

    Any idea why I'm getting the massive negative number when I do the subtraction???

    Cheers,
    Niggles

  2. #2
    Hmm, forget my question. As soon as I put brackets around the equation it worked ->

    Code:
    echo (time() - $_SESSION["loginlocked"]);
    *boggle*

  3. #3
    Senior Member
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    thats because when you do not enclose the whole line with () you are actually telling it to echo 2 separate things

  4. #4
    thats because when you do not enclose the whole line with () you are actually telling it to echo 2 separate things
    Originally, I had it as -

    Code:
    if(time() - $_SESSION["loginlocked"] > 600){
        doSomething();
    }
    which wasn't working - it was giving the negative 11 million number, so I echoed the equation to see what it was doing.

    So I'm still not sure why it didn't work - except that by enclosing it the subtraction in brackets it decided to work properly.

    Cheers,
    Niggles

  5. #5
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    if(time() - $_SESSION["loginlocked"] > 600){
    doSomething();
    }

    I think that would work...

  6. #6
    Senior Member Aardpsymon's Avatar
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    isn't that what he has already?

    try
    Code:
    if( (time() - $_SESSION["loginlocked"]) > 600){
        doSomething();
    }
    Last edited by Aardpsymon; June 26th, 2007 at 02:01 PM. Reason: formatting change
    If the world doesn't stop annoying me I will name my kids ";DROP DATABASE;" and get revenge.

  7. #7
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    Nope he didnt close the parentheses right before the > symbol

  8. #8
    Hi,

    It's all sorted - the () around the expression did the trick.

    Cheers and thanks,
    Niggles

  9. #9
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    Np guy

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