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wordpress if / else for custom fields

Hello, I have a set of custom fields which are not always populated. I need to display them if populated and either display nothing or display a message if they are not.

This is the code to display the fields on the page.

 <h6><span>By: </span><?php yyy_authors(); ?>. <span>Updated on:</span> <?php yyy_date_updated(); ?>. <span>Document type:</span> <?php the_field('document_type'); ?></h6>

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So for the sake of figuring this out I'd like it to display the word 'unkown' if any of the fields are empty.

I know I need to be using an if / else but not sure how so can anyone please point me in the direction?

Thanks!

Hube02

You're using ACF? :)
I'm assuming so because of the call to the function the_field(), the_field() returns false if no value is set.

$document_type = get_field('document_type');
if  ($document_type) {
  echo $document_type;
} else {
  echo 'unknown';
}

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igloobob

ASKER

Hi it's actually using ACF for one of the fields but a different plugin for the other two (it's a private plugin pulling documents from external sources that I was supplied with as part of the job).

<?php yyy_authors(); ?>
<?php yyy_date_updated(); ?>

are the ones from the other plugin.

I tried your code above but it just returns 'unknown'

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Hube02

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igloobob

ASKER

hi sorry for the delay, I've been on other jobs.

I spoke to the developer and he set it up to include get functions for the fields, it's a custom plugin that's still in development.

Thanks for the advice on that.