Smarty

[bestedge]

My situation is that I have a plugin for WordPress and all of the templates for the pages are written in smarty.

I have a code block:

<tpl ifset="collection.salesbutton">
<div class="collection-payment-buttons">
{collection.salesbutton}
</div>
<div class="collection-payment-paypal-buy-now">
</div>
</tpl ifset="collection.salesbutton">

And what I really want to do is add a line of PHP to it, but the {php} doesn't work and has apparently been removed.

<tpl ifset="collection.salesbutton">
<div class="collection-payment-buttons">
{collection.salesbutton}
</div>
<div class="collection-payment-paypal-buy-now">
<?php the_field('cd_paypal_code'); ?>
</div>
</tpl ifset="collection.salesbutton">

But obviously, I can't just add <?php the_field('cd_paypal_code'); ?> -- because that doesn't work. So I just need to know how to make that happen in this tpl thing.

Yes, I already tried googling a lot to figure it out, and the documentation all starts from you have no files, not how to add something to a big existing thing.

[AnrDaemon]

The best way to do it is to not do it.
Write a template function for Smarty and use it as you would any other Smarty template tag.
Or, if that's a static piece of code, make a subtemplate and include it in there. Even if not static… Refer to {include} documentation for details.