simple_dynamic_nav.php

<?php
// example code

$main_nav = [
    "index.php" => "home",
    "service.php" => "service",
    "uber.php" => "uber",
    "contact.php" => "contact",
    "legal.php" => "legal"
    ];
    
foreach($main_nav AS $link => $name) {
 // echo "$name $link <br>";
 echo "<ul><li><a href=\"$link\">$name</a></li></ul>";
}