Question

Im hoping someone can help me with a small problem!

I have a php while loop that loops 3 times.

Each time it loops I want an inner loop to output 2 incremental values per loop.

For example:

Loops the first time: Inner loop should output value 1, value 2

Loops the second time: Inner loop should output value 3, value 4

Loops the third time: Inner loop should output value 5, value 6

any ideas?

Answer 1

What about something like this :

$in = 1;
$out = 0;
while (++$out <= 3) {
    echo "Outer loop $out : ";
    for ($i=0 ; $i<2 ; $i++) {
        echo "$in ";
        $in++;
    }
    echo "<br />";
}

Which gets me the following output :

Outer loop 1 : 1 2
Outer loop 2 : 3 4
Outer loop 3 : 5 6

Basically, here :

• I’m using the $out variable to keep track of the number of times I’ve been through the outer loop — I only want to loop 3 times
• I’m using the $i variable to control how many times the inner loop loops — two times, each time the outer while loops.
• And I’m using the $in variable as a global counter, incremented by 1 every time the inner loop loops — this is what I want to output.