Владимир Боруткин

$str = ['image_n8938.jpg', 'image_n3472.jpg', 'image_n8342.jpg', ];
$str2 = [];
foreach ($str as $item) {
    array_push($str2,"
<div class=\"image\">
<a href=\"/original/$item\"><img src=\"/preview/$item\"></a>
</div>

<div class=\"image\"><a href=\"/original/$item\">
<img src=\"/preview/$item\"></a>
</div>

<div class=\"image\">
<a href=\"/original/$item\"><img src=\"/preview/$item\"></a>
</div>" );
}