Joomla - Execute some code on home page and other code on all other pages

index.php

    <?php
    //This will detect the Home Page of Joomla and perfom whatever code you tell it to
    $menu = & JSite::getMenu();
    if ($menu->getActive() == $menu->getDefault()) {
     
    //This code will be executed on the home page
     
    } else {
     
    //This code will be executed on every page except the home page
     
    }
    ?>