When does the pointer move to if or else in the given code ?

[gautamz07]

        <?php
    $headCount = 0;
    $flipCount = 0;
    do {
        $flip = rand(0,1);
        $flipCount ++;
        if ($flip ){
            $headCount ++;
            echo "<div class=\"coin\">H</div>";
        }
        else {
            $headCount = 0;
            echo "<div class=\"coin\">T</div>";
        }
    }while ($headCount < 3);
    echo "<p>It took {$flipCount} flips!</p>";
 
 
    ?>
 
 
 

When is the if statement executed and when is the else statement executed ?

[techboy]

rand() generates random value between 0 and 1 inclusive thus
whenever non zero is generated it moves to the if part and else when value of $flip=0.Same way if it goes into if part thrice than your $headcount becomes 3 which fails the do while loop and comes out of it.
Due to rand() you cant decide how many times either of if or else part would get executed!

[gautamz07]

Actually Found the answer now ..

When you use a number in a condition, as we did earlier, PHP understands 1 to mean true and 0 to mean false.