The other day I had to iterate over a large number of items but to avoid a timeout I could only compute a certain amount at a time. So I had to split the number into equal chunks and a remainder. Here’s an easy way to determine the chunk size:

$totalNumber = 50321; $chunkSize = 1023; $remainder = $totalNumber % $chunkSize; $chunks = ($totalNumber - $remainder) / $chunkSize;

The code return the following values:`$remainder => 194`

$chunks => 49

Verification: (49 * 1023) + 194 = 50321

**How does it work?**

In line 4 `$totalNumber`

is divided by a modulo operator (“%” is the PHP token for modulo). The operator returns the remainder of the division (194 in this case). By subtracting this value from `$totalNumber`

it becomes a whole number multiple of $chunks and the division with `$chunkSize`

equals the desired number of `$chunks`

(line 6).

Now you have the number of necessary iterations and the remaining part.