Why does the_title() filter is also applied in menu title?
Nikola is correct:
Because menu items also have titles and they need to be filtered :).
To make this only call in the posts, and not in menus, you can add a check for in_the_loop() - if it is true, you're in a post.
So change the first line in the function to:
if( is_admin() || !in_the_loop() )
and all should be well.
It's a bit of a hack but you can solve this by adding your action to loop_start.
function make_custom_title( $title, $id ) { // Your Code Here}function set_custom_title() { add_filter( 'the_title', 'make_custom_title', 10, 2 );}add_action( 'loop_start', 'set_custom_title' );By embedding the_title filter inside of a loop_start action, we avoid overwriting the menu title attributes.
You can do something like that :
In your function.php :
add_filter( 'the_title', 'ze_title');function ze_title($a) { global $dontTouch; if(!$dontTouch && !is_admin()) $a = someChange($a); return $a;}In your template :
$dontTouch = 1;wp_nav_menu( array('menu' => 'MyMenu') );$dontTouch = 0;