I'm new to smarty and I want to display all the arrays that contains `'sezoniere' => null` I have a loop

`{foreach from=$servList item=_item name=servList}`

```
<h6><a href="{$baseURL}{if !$smarty.foreach.servList.first}{$_item.post_name}{else}servicii{/if}/" title="{$_item.nume}">{$_item.nume}</a></h6>
{/foreach}

```

Here is the array:

```
'id' => string '1' (length=1)
'nume' => string 'Serviciul 1' (length=11)
'post_name' => string 'serviciul-1' (length=11)
'sezoniere' => string '1' (length=1)

```

The second array in the loop:

```
'id' => string '2' (length=1)
'nume' => string 'Serviciul 2' (length=11)
'post_name' => string 'serviciul-2' (length=11)
'sezoniere' => null

```

How I can display in the loop above only the array's that have `'sezoniere' => null` ?