how to split while with every 4 time using continue - php

Question

how setting product category wise with limit 4 that's why i have to split while loop with every 4 count
I want something like this:
category name 1
product 1
product 2
product 3
product 4
category name 2
product 5
product 6
product 7
product 8
I have tried the following code:
$count=0;
while($row_pt = $result_2->fetch_array())
{
if($count%4==0)
{
$output .= '
<div class="col-sm-4 col-lg-3 col-md-3">
<h3>CATEGORY NAME'.$row_pt['cat_id'].'</h3>
<div style="border:1px solid #ccc; border-radius:0px; padding:16px; margin-bottom:16px; height:250px;">
<img src="image/'. $row_pt['product_image'] .'" alt="" class="img-responsive" >
<p align="center"><strong>'. $row_pt['product_name'] .'</strong></p>
Course Code : '. $row_pt['product_name'] .' <br />
Course Name : '. $row_pt['product_name'] .' <br />
</div>
</div>';
continue;
}
$count++;
}

Answer 1

Something like this, so you're wrapping every four products in a div by utilising the count variable:
$count = 1;
while ($row_pt = $result_2->fetch_array())
{
if (($count - 1) % 4 === 0)
{
$output .= '<div class="products">';
}
$output .=
'<h3>CATEGORY NAME' . $row_pt['cat_id'] . '</h3>
<div class="product">
<img src="image/' . $row_pt['product_image'] . '">
' . $row_pt['product_name'] . '
<span>Course Code : ' . $row_pt['product_name'] . '</span>
<span>Course Name : ' . $row_pt['product_name'] . '</span>
</div>';
if ($count % 4 === 0)
{
$output .= '</div>';
}
$count++;
}
if (($count - 1) % 4 !== 0)
{
$output .= '</div>';
}