Multiple excerpt lengths in wordpress

In WordPress, the length of the excerpt (the summary text displayed on the homepage or archive pages) can be controlled by the theme or by a plugin. The theme may have a specific setting for the excerpt length, or it may use the default WordPress excerpt length of 55 words. If a theme does not have a specific setting, you can use a plugin such as Advanced Excerpt to set the excerpt length. You can also customize the excerpt length by adding a function to the functions.php file of your theme.

To implement multiple excerpt lengths, hook into the excerpt_length filter and return different values based on the current page context:

function custom_excerpt_length( $length ) {
    if ( is_home() ) {
        return 20; // Shorter excerpt for homepage
    } elseif ( is_archive() ) {
        return 55; // Standard excerpt for archive pages
    }
    return $length; // Fallback to default
}
add_filter( 'excerpt_length', 'custom_excerpt_length', 999 );

Once added, any call to the_excerpt() or get_the_excerpt() will automatically use the appropriate length based on the current template context.