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1. parthatel
   Member
   Posted 4 years ago #
   

   How do I create an "if" for the custom fields? For example, if my KEY ID is $example, how do I make it so that only content will only appear if the key $exampleis available.

   WordPress uses the

   <?php if (have_posts()) : while (have_posts()) : the_post(); ?>
   <?php endwhile; else: ?>
       <?php endif; ?>

   I've also seen:

   <?php if(function_exists('the_ratings')) { the_ratings(); } ?>

   So can't I make a

   <?php if(key_exists('$example')) {whatever i want here } ?>

2. MichaelH
   Member
   Posted 4 years ago #
   

   Take a look at the code from the plugin, Redirectify for an example:

3. parthatel
   Member
   Posted 4 years ago #
   

   Srry, I'm just a beginner at php. I still have no clue.

4. Dalton Rooney
   Member
   Posted 4 years ago #
   

   There's a plugin that makes this very easy:

   http://coffee2code.com/archives/2004/06/30/plugin-get-custom/

   Follow the instructions for adding it to your template, I think by default if there is no matching key, it outputs nothing.

5. Samuel Wood (Otto)
   Tech Ninja
   Posted 4 years ago #
   

   A plugin is not necessary, all that you need is built into WordPress.

   if (get_post_meta($wp_query->post->ID, $example_key, true) != '') {
   whatever
   }

6. parthatel
   Member
   Posted 4 years ago #
   

   @Otto, the code doesn't work

7. Chad_Coleman
   Member
   Posted 4 years ago #
   

   <?php if ( get_post_meta($post->ID, 'your_key_name', true) ) { ?>
   <?php echo get_post_meta($post->ID, "your_key_name", $single = true); ?>
   <?php } ?>

   Just swap out both instances of 'your_key_name'. Remember this belongs in the loop. And I always encourage you to read the WordPress Codex.

   A good example:

   <?php if ( get_post_meta($post->ID, 'header_image', true) ) { ?>
   
   <img src="<?php bloginfo('url'); ?>/wp-content/uploads/<?php the_time('Y/m'); ?>/<?php echo get_post_meta($post->ID, "header_image", $single = true); ?>" alt="<?php the_title(); ?>" />
   
   <?php } ?>

8. Samuel Wood (Otto)
   Tech Ninja
   Posted 4 years ago #
   

   @parthatel: Yes, it does. I use code like that all the time.

   Try it again, you messed up somewhere. The above code *works*.

9. jzo
   Member
   Posted 4 years ago #
   

   Good stuff,

   Thank you guys.

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