meet it

Put an `if` inside a loop to check every number.

A loop can make a decision on every go. Put an if inside the loop's block, and PHP asks the question again each time round.

% is perfect for this. A number is even when dividing by 2 leaves nothing over, so $house % 2 === 0 is true for 2, 4 and 6.

To count the matches, keep a . Start it at 0 before the loop, then add one inside the if. After the loop, the tally holds the total.

<?php
$left = 0;
for ($house = 1; $house <= 6; $house++) {
    if ($house % 2 === 0) {
        $left++;
    }
}
echo "Letters for the left side: $left\n";

Notice the two closing } marks: the first ends the if, the second ends the loop.

guess first

Which numbers fizz? Make a guess.

Guess before you run it. Wrong guesses are how you learn, and nothing is marked.

<?php
for ($number = 1; $number <= 6; $number++) {
    if ($number % 3 === 0) {
        echo "Fizz $number\n";
    }
}

your turn

Your turn. Hunt for a times table.

Pick how far to count in the first blank, then a times table to spot in the second, like 5. Run it to tally how many you find.

Your code

press run to see what happens

fix it

Tickets 5 and 10 both win, so the tally should be 2. Fix it.

Broken code to fix

press run to see what happens

Follow $winners round the loop. What happens to it at the start of every go?
Line 3 sets the tally back to 0 each time round, so only the last win is left.
Move $winners = 0; above the for line, so it runs once, then press run.

nailed it

your loops can make decisions. :D

An if inside a loop checks every go.
% 2 === 0 spots even numbers.
Start a tally at 0 before the loop, not inside it.

new words in your collection

tally

This lesson isn’t saved. A free account remembers every lesson you finish.

Put an if inside a loop to check every number.

Which numbers fizz? Make a guess.

Your turn. Hunt for a times table.

Tickets 5 and 10 both win, so the tally should be 2. Fix it.

your loops can make decisions. :D

Put an `if` inside a loop to check every number.