Question

Im trying to make dynamic column list that will be 4 columns total (PHP). Im echoing an array and after every time 4 array items are echod, I would like to wrap those 4 array items in a div called “column”.

So basically, I thought I could do this with a self counting $i++ statement, but first off I’m having trouble starting the count from anything but zero (I tried setting the variable initially outside of the for each loop.)

Anyways, ya, if you could kindly show me how to check to see if the $++ is divisible by 4 in php, so that I can insert a if $i++ is divisible by 4 then echo “” , it would be much appreciated. But first I believe I need to figure out how to start the counting at 1 (so that the if $i++ is divisible by 4 would work… right??)

Answer 1

If you divide by 4 it will be integer division and the quotient will be the factor of 4. What you probably want is the modulus operator %. It will give you the remainder. So when $i is a multiple of 4 it will be 0.

if (($i % 4) == 0) {
  // evenly divisible by 4 logic
}

Modulus can be inefficient. Since you are dividing by a multiple of 2, you could shift bits right by 2. It is the same as dividing by 4 and much more efficient. Check out bit shifting.