PHP preventing indention nightmare

// Say you want to validate a few things before you
// run the database query. Here I've used only 3 checks,
// but go figure with 20+ checks! You'll need a HUGE
// widescreen monitor to make it all fit.
if(hasEnoughMoney()) {
    if(hasEnoughIQ()) {
        if(someOtherCheck()) {
            mysql_query("wooot!");
            print "Your order has been placed.";
        } else {
            print "not enough cash";
        }
    } else {
        print "You are too dumb";
    }
} else {
    print "not enough cash";
}



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// Using this could be a much cleaner solution:
// the do... while is just there so we can "break"
// the code. You can use a GOTO too, but people seem
// to hate that. (oh, you can use a switch(), too).
do {

    if(!hasEnoughMoney()) {
        print "not enough cash";
        break;
    }

    if(!hasEnoughIQ()) {
        print "You are too dumb";
        break;
    }

    if(!someOtherCheck()) {
        print "some check failed.";
        break;
    }

    // All checks passed! Run critical code.
    mysql_query("wooot!");
    print "Your order has been placed.";
} while(false);