Title: Problem with Conditionals in functions.php
Last modified: May 23, 2017

---

# Problem with Conditionals in functions.php

 *  Resolved [WPChina](https://wordpress.org/support/users/wordpresschina/)
 * (@wordpresschina)
 * [9 years ago](https://wordpress.org/support/topic/problem-with-conditionals-in-functions-php/)
 * I want to prepend content to my posts in the Single Posts and RSS Feeds. Here
   is the code I currently use and it works well:
 *     ```
       add_filter('the_content','add_postdata_to_content');
       function add_postdata_to_content($content) {
       global $post;
       if ( is_single() || is_feed() ) {
         $postdata .= '<!-- BEGIN --><strong>' . get_post_meta( $post->ID, 'cityname', true ) . ', ' . get_the_time('Y-m-d') . '<!-- END --> ';
       return preg_replace('/<p>/', '<p>' . $postdata, $content, 1);
       }
       else 
       {
         $postdata .= '<p>';
       return preg_replace('/<p>/', '<p>' . $postdata, $content, 1);
       }
       }
       ```
   
 * But one of my Categories (ID = 409) does not have post meta for the ‘cityname’
   field, so I want to always use “New York” in that space.
 * What is the best way to include “New York” if the get_post_meta for ‘cityname’
   is empty or if it is in the category # 409? it would be best to only fix it for
   showing “New York” for category 409, but showing it when post meta is empty si
   also a possibility.

Viewing 2 replies - 1 through 2 (of 2 total)

 *  [justinwhall](https://wordpress.org/support/users/jwind/)
 * (@jwind)
 * [9 years ago](https://wordpress.org/support/topic/problem-with-conditionals-in-functions-php/#post-9160250)
 * Check if the post meta is an empty string…
 *     ```
       add_filter('the_content','add_postdata_to_content');
       function add_postdata_to_content($content) {
           global $post;
           if ( is_single() || is_feed() ) {
   
             $postdata .= '<!-- BEGIN --><strong>';
             // ternary to check if there is post meta value for cityname. if not, use 'New York'
             $postdata .= ( get_post_meta( $post->ID, 'cityname', true ) !== '' ) ? get_post_meta( $post->ID, 'cityname', true ) : 'New York';
             $postdata .= ', ' . get_the_time('Y-m-d') . '<!-- END --> ';
   
             return preg_replace('/<p>/', '<p>' . $postdata, $content, 1);
           } else {
             $postdata .= '<p>';
               return preg_replace('/<p>/', '<p>' . $postdata, $content, 1);
           }
       }
       ```
   
    -  This reply was modified 9 years ago by [justinwhall](https://wordpress.org/support/users/jwind/).
 *  Thread Starter [WPChina](https://wordpress.org/support/users/wordpresschina/)
 * (@wordpresschina)
 * [9 years ago](https://wordpress.org/support/topic/problem-with-conditionals-in-functions-php/#post-9162062)
 * Works excellent! Thanks so much~

Viewing 2 replies - 1 through 2 (of 2 total)

The topic ‘Problem with Conditionals in functions.php’ is closed to new replies.

## Tags

 * [conditional](https://wordpress.org/support/topic-tag/conditional/)

 * In: [Developing with WordPress](https://wordpress.org/support/forum/wp-advanced/)
 * 2 replies
 * 2 participants
 * Last reply from: [WPChina](https://wordpress.org/support/users/wordpresschina/)
 * Last activity: [9 years ago](https://wordpress.org/support/topic/problem-with-conditionals-in-functions-php/#post-9162062)
 * Status: resolved

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