How can I prevent a function from loading in the admin screens?

Question

When I add this code to my theme's functions.php file, it crashes my admin panel. How can I prevent it from loading in the admin screens?

//add_action('init', 'hekim_sticky_header'); 
// I want load this only if it is not admin panel

Answer 1

You can use the is_admin() function to check:

add_action( 'init', 'hekim_sticky_header' );
function hekim_sticky_header() {
    if ( is_admin() ) {
        return;
    }
    // Rest of your function goes here.
}