New containing div after every 3 records

Question

I would like to create a new containing

after 3 results, using PDO result loop.

For my self-study-project I have to made a product page with

Answer 1

As tadman stated in the comment under your question. The best approach should use a modulus operator (%) with 3.

Place your separating condition at the start of each iteration. (Demo)

Like this:

$x=0;  // I prefer to increment starting from zero.
       // This way I can use the same method inside a foreach loop on
       // zero-indexed arrays, leveraging the keys, and omit the `++` line.
echo "
";
    foreach($rows as $row){
        if($x!=0 && $x%3==0){  // if not first iteration and iteration divided by 3 has no remainder...
            echo "
\n
";
        }
        echo "
$row
";
        ++$x;
    }
echo "
";

This will create:

one
two
three
four
five
six

---

Late Edit, here are a couple of other methods for similar situations which will provide the same result:

foreach(array_chunk($rows,3) as $a){
    echo "
",implode('
',$a),"
\n";
}

or

foreach ($rows as $i=>$v){
    if($i%3==0){
        if($i!=0){
            echo "