How Do I Set the Page Title Dynamically?

7 comments

1. There is no documentation on it but you could always apply a filter to the_title like this:

   add_filter('the_title','some_callback');
   function some_callback($data){
       global $post;
       // where $data would be string(#) "current title"
       // Example:
       // (you would want to change $post->ID to however you are getting the book order #,
       // but you can see how it works this way with global $post;)
       return 'Book Order #' . $post->ID;
   }
   

   See these:

   http://codex.wordpress.org/Function_Reference/the_title

   http://codex.wordpress.org/Function_Reference/add_filter

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2. As of WordPress 4.4, you can use the WordPress filter document_title_parts to change the title.

   Add the following to functions.php:

   add_filter('document_title_parts', 'my_custom_title');
   function my_custom_title( $title ) {
     // $title is an array of title parts, including one called `title`
   
     $title['title'] = 'My new title';
   
     if (is_singular('post')) {
       $title['title'] = 'Fresh Post: ' . $title['title'];
     }
   
     return $title;
   }
   

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3. For those wishing to change the document’s title attribute, I found that using the wp_title filter no longer works. Instead, use the pre_get_document_title filter:

   add_filter("pre_get_document_title", "my_callback");
   function my_callback($old_title){
       return "My Modified Title";
   }
   

   Source

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4. When having Yoast enabled you need to override the title like so:

   add_filter('wpseo_title', 'custom_titles', 10, 1);
   function custom_titles() {
   
     global $wp;
     $current_slug = $wp->request;
   
     if ($current_slug == 'foobar') {
   
       return 'Foobar';
     }
   }
   

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5. Really depends if you’re looking to display a custom title for the current page (i.e. the contents of the <title></title> tag in the header) or filter the title of pages in the page body or in listings.

   In the former case (the title of the current page), try adding a filter for wp_title() like so:
   http://codex.wordpress.org/Plugin_API/Filter_Reference/wp_title

   If you want to modify page titles across the board, filtering the_title() will do the trick:
   http://codex.wordpress.org/Plugin_API/Filter_Reference/the_title

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6. If you’re using All In One Seo v4+, use this filter:

   add_filter( 'aioseo_title', 'aioseo_filter_title' );
   
   function aioseo_filter_title( $title ) {
      if ( is_singular() ) {
         return $title . 'some additional title content here';
      }
      return $title;
   }
   

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7. Actually the easiest way to do this is use one line of js.

   Put the following code in the template:

   <script>document.title = "<?php echo $new_title; ?>";</script>
   

   This code doesn’t has to be in the html header, it can be put in the html body.

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