It almost work correctly, but alwas return the same menu name: On home all menu elements name home on contact all menu elements name contact

function max_title_length( $title ) {
    global $post;
    $id = ($post->ID);
    $title = get_post( $id )->post_title;
    $max = 20;
    if( strlen( $title ) > $max ) {
        return substr( $title, 0, $max ). " …";  
    }
    else {
        return $title;
    }
}
add_filter( 'the_title', 'max_title_length');

It almost work correctly, but alwas return the same menu name: On home all menu elements name home on contact all menu elements name contact

function max_title_length( $title ) {
    global $post;
    $id = ($post->ID);
    $title = get_post( $id )->post_title;
    $max = 20;
    if( strlen( $title ) > $max ) {
        return substr( $title, 0, $max ). " …";  
    }
    else {
        return $title;
    }
}
add_filter( 'the_title', 'max_title_length');

• title

3 Answers 3

It's because you're not using the filter correctly. The the_title filter passes the title to be filtered as the $title argument, but you're overwriting it with this code:

global $post;
$id = ($post->ID);
$title = get_post( $id )->post_title;

That code's completely unnecessary because the title is already available in your function:

function max_title_length( $title ) {

So simply remove those lines to filter the correct title:

function max_title_length( $title ) {
    $max = 20;

    if ( strlen( $title ) > $max ) {
        return substr( $title, 0, $max ) . ' …';  
    } else {
        return $title;
    }
}
add_filter( 'the_title', 'max_title_length' );

Just be aware that — as you've experienced — the the_title filter applies to all titles, including posts, pages, and menu items. So if you only want your code to apply to titles output within The Loop, you can use the in_the_loop() function:

function max_title_length( $title ) {
    $max = 20;

    if ( in_the_loop() && strlen( $title ) > $max ) {
        return substr( $title, 0, $max ) . ' …';  
    } else {
        return $title;
    }
}
add_filter( 'the_title', 'max_title_length' );

function max_title_length($title) {
    if(is_front_page()){
        $max = 8;  
    }
    elseif(is_single()){
        $max = 5;
    }
    else{
        $max = 15;
    }


    if (strlen( $title ) > $max ) {
        return substr( $title, 0, $max ) . ' …';  
    } else {
        return $title;
    }
}
add_filter( 'the_title', 'max_title_length' );

it still cut the menu title. in_the_loop() function not working.

function max_title_length( $title ) {    
    $max = 20;
    if ( strlen( $title ) > $max ) {
       $title = substr( $title, 0, $max ) . ' …';  
    }
    return $title;
}
add_filter( 'the_title', 'max_title_length' );