Condition if zero or less - working with if 0 but unsure or is less

Question

I have the following code :

{if $product.amount == 0}
      <div class="ofs-label">{$lang.price}:</div>
{/if}

which at the moment shows the HTML if the amount is equal to 0, however, how can I modify this so it shows the HTML if it is equal to 0 or less?

Answer 1

You might want to look at comparison operators in PHP. Here's a great resource from php.net

For your purpose, you would want to do this:

{if $product.amount <= 0}
<div class="ofs-label">{$lang.price}:</div>
{/if}

As you can see, the <= operator will return TRUE if $product.amount is less than or equal to zero.