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php variable that is a multiple of 3, starting at 2

Hey everyone,

I'm fairly new to PHP and I have a question regarding variables. I've been trying to figure out how to create a variable that is a multiple of 3, starting at 2.

Let me provide a bit of context. I'm working on a project where I need to generate a series of numbers, and these numbers should be multiples of 3. However, the series should start with the number 2.

I've tried a few different approaches, but I haven't been successful so far. I'm not sure if there's a specific function or method in PHP that can help me achieve this.

Any help or guidance would be greatly appreciated. Thank you in advance!

All Replies


Hey there!

I came across a similar requirement in one of my PHP projects before, so I hope my experience can help you out. What I did was use a while loop to generate the series of numbers that are multiples of 3, starting from 2. Here's an example of how it could be implemented:

$number = 2;
while ($number % 3 != 0) {

This code will increment the `$number` variable until it becomes a multiple of 3. So in this case, it will output `3`, which is the first number in the series you mentioned.

To generate subsequent multiples of 3, you can use a for loop starting from the first multiple you found:

for ($i = $number; $i <= $maxNumber; $i += 3) {
// Do whatever you need with each multiple of 3

In this loop, `$maxNumber` represents the maximum number you want to generate.

I hope this helps! Let me know if you have any further questions.



As someone who loves exploring different solutions, let me share an alternative approach I discovered for generating the desired series of numbers. Instead of using loops, I utilized the range() function combined with array_filter().

Here's an example of how it can be implemented:

$numbers = array_filter(range(2, $maxNumber), function($item) {
return $item % 3 === 0;

In this code, the range() function creates an array of numbers starting from 2 up to the desired maximum number, specified by `$maxNumber`. The array_filter() function then filters out any numbers that are not divisible by 3, leaving us with only the multiples of 3.

You can iterate over the `$numbers` array to access each multiple of 3 and perform any necessary operations.

This approach can be handy if you want to quickly generate the entire series of multiples of 3 without explicitly using loops.

I hope you find this helpful! Let me know if you have any further questions or if you need more clarification.

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