Get First Name (aka first word in page title)

first-name-shortcode.php

<?php

add_shortcode( 'first_name', 'get_first_name' );
function get_first_name() {
    $title = get_the_title();
    $full_name_seperate = explode( ' ', $title );
    return $full_name_seperate[0];
}

Useful shortcode ([first_name]) when you have a post type of people (team, speakers, etc) and want to be able to use their first name without requiring a separate field to be input