Title: Get posts – remove duplicate titles from loop
Last modified: August 22, 2016

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# Get posts – remove duplicate titles from loop

 *  [bradical911](https://wordpress.org/support/users/bradical911/)
 * (@bradical911)
 * [11 years, 9 months ago](https://wordpress.org/support/topic/get-posts-remove-duplicate-titles-from/)
 * Hi,
 * I have a custom posts set up to run a catalogue. Many of the items in the catalogue
   have exactly the same title.
 * Im using the code below to output all the page titles as a list that you can 
   click on as a search.
 * So I’m using the title (not linking to a post) to create a search query in effect.
   As there are multiple titles i want to remove duplicates in the list, is this
   possible?
 * For example currently titles you would see:
 * Cats
    Cats Cats Dogs
 * But i need:
 * Cats
    Dogs
 *     ```
       <?php
       $lastposts = get_posts('&post_type=catalogue&orderby=title&order=ASC&numberposts=-1');
       foreach($lastposts as $post) :
       setup_postdata($post);
       // somehow remove duplicates titles?
       ?>
   
       <li>
       <a href="?s=<?php the_title(); ?>&post_type=catalogue">
       <?php the_title(); ?>
       </a>
       </li>
   
       <?php endforeach; ?>
       ```
   

Viewing 1 replies (of 1 total)

 *  Thread Starter [bradical911](https://wordpress.org/support/users/bradical911/)
 * (@bradical911)
 * [11 years, 9 months ago](https://wordpress.org/support/topic/get-posts-remove-duplicate-titles-from/#post-5286699)
 * A friend offered this solution which works nicely. However he points out that:
 * > The problem with that is there will be a load of unnecessary looping. Say you
   > get 1000 rows back from the database but it only actually outputs 2.
 * For me it works fine on a small site but would be interested in anything that
   can reduce querys to the DB.
 *     ```
       <ul>
               <?php
                 /**
                  * Create an array to hold all of the post titles
                  */
                 $post_titles = array();
   
                 $lastposts = get_posts('&post_type=catalogue&orderby=title&order=ASC&numberposts=-1');
   
                 foreach($lastposts as $post) :
   
                   $post_title = get_the_title();
   
                   if(!in_array($post_title, $post_titles)) :
   
                     /**
                      * Add the post title to the array
                      */
                      array_push($post_titles, $post_title);
                      setup_postdata($post);
                      // somehow remove duplicates titles?
               ?>
                 <li>
                   <a href="?s=<?php the_title(); ?>&post_type=catalogue">
                     <?php the_title(); ?>
                   </a>
                 </li>
               <?php
                   endif;
                 endforeach;
               ?>
               </ul>
       ```
   

Viewing 1 replies (of 1 total)

The topic ‘Get posts – remove duplicate titles from loop’ is closed to new replies.

## Tags

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

 * 1 reply
 * 1 participant
 * Last reply from: [bradical911](https://wordpress.org/support/users/bradical911/)
 * Last activity: [11 years, 9 months ago](https://wordpress.org/support/topic/get-posts-remove-duplicate-titles-from/#post-5286699)
 * Status: not resolved

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