Limiting the WordPress feed to only a certain limit of characters

1 comment

1. You can select between Full text and Summary in the Reading settings:

   

   

   If you select the Summary, then

   a) To control the number of words in the feed summary you can use:

   add_filter('excerpt_length','custom_excerpt_length'); 
   function custom_excerpt_length( $num_words ){
       return 30; // number of words to show
   }
   

   The default number of words in the summary is 55.

   b) If you want to use <!--more--> in the post content to define the feed summary, you can use the following:

   add_filter( 'the_content', 'custom_content_feed' );
   function custom_content_feed( $content ){
       if( is_feed() ){
           // <!--more--> used in the post content: 
           if( strpos( $content, '<span id="more-') !== FALSE ){
               // remove the excerpt length limit
               add_filter( 'excerpt_length', 'custom_long_excerpt_length' ); 
               // get the content before <!--more-->
               $content = stristr( $content, '<span id="more-', TRUE );
               // add the default 'read more' symbols at the end:
               $excerpt_more = apply_filters( 'excerpt_more', ' ' . '[&hellip;]' );
               $content .= $excerpt_more;
            }
       }
       return $content;
   }
   function custom_long_excerpt_length( $num_words ){
       return 99999;
   }
   

   c) You can also use a) and b) together.

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