How to change wordpress post title?

Question

How to change just wordpress post title but not menu items.

add_filter('the_title', 'wordpress_title');
function wordpress_title(){
  return 'New title';
}

Answer 1

add_filter('the_title', 'wordpress_title');
function wordpress_title($title){

    //Return new title if called inside loop
    if ( in_the_loop() )
        return 'New title';

    //Else return regular   
    return $title;

}

Have you tried the in_the_loop() conditional check to return new title only if called inside loop. That means nav menu's will not get affected.

Answer 2

If you're using custom nav menus, you can do this entirely without code. Go to Appearance -> Menus and change the "Navigation Label" of each menu item you want to be different.

Answer 3

<?php add_filter('the_title', function($title) { return '<b>'. $title. '</b>';}) ?>