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fsockopen problem

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I've got a function which basicly checks if a URL exists.  It first checks using the fsockopen function and if there is a connection it returns a true value e.g.

$connection = fsockopn("localhost", 80, $errno, $errstr, 30);
    return true;
    return false;

It's that simple,  but when the script is run it prompts the user to download the page they are currently viewing.
I also tried adding fclose($connection); before the boolean is returned but it still does it.

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