每四个div包裹一个div

Question

I need a little help with a php loop for OpenCart.

I need to do is wrap a div around the output of the data every 4 loops.

I have the following

<?php foreach ($categories as $category) { ?>
<div class="col-lg-3 col-md-3">.....</div>
<?php } ?>

I get this

<div class="col-lg-3 col-md-3">.....</div>
<div class="col-lg-3 col-md-3">.....</div>
<div class="col-lg-3 col-md-3">.....</div>
<div class="col-lg-3 col-md-3">.....</div>
<div class="col-lg-3 col-md-3">.....</div>
<div class="col-lg-3 col-md-3">.....</div>
<div class="col-lg-3 col-md-3">.....</div>
<div class="col-lg-3 col-md-3">.....</div>
<div class="col-lg-3 col-md-3">.....</div>
<div class="col-lg-3 col-md-3">.....</div>

But what I'm hoping to get is

<div class="row">
<div class="col-lg-3 col-md-3">.....</div>
<div class="col-lg-3 col-md-3">.....</div>
<div class="col-lg-3 col-md-3">.....</div>
<div class="col-lg-3 col-md-3">.....</div>
</div>
<div class="row">
<div class="col-lg-3 col-md-3">.....</div>
<div class="col-lg-3 col-md-3">.....</div>
<div class="col-lg-3 col-md-3">.....</div>
<div class="col-lg-3 col-md-3">.....</div>
</div>
<div class="row">
<div class="col-lg-3 col-md-3">.....</div>
<div class="col-lg-3 col-md-3">.....</div>    
</div>

Any help would be greatly appreciated :)

Answer 1

try this

<?php 
$i=0;
$wrap_count = 4; // you can change this no of divs to wrap
foreach ($categories as $category) 
{ 
    $i+=1;
    if($i%$wrap_count==1)
    {
        echo '<div class="row">';
    }
?>
    <div class="col-lg-3 col-md-3">.....</div>
<?php 
    if($i%$wrap_count==0)
    {
        echo '</div>';
    }
} 

if($i%$wrap_count!=0)
{
    echo '</div>';
}
?>