Maybe try:
<a class="nav-link <?php if (stripos($_SERVER['REQUEST_URI'],'index.php?name='.$Recordset1->getColumnVal("name")) !== false) {?>active<?php } ?>" aria-current="page" href="index.php?name=<?php echo($Recordset1->getColumnVal("name")); ?>">
<?php echo($Recordset1->getColumnVal("name")); ?>
</a>