使用PHP创建额外的SEO样式链接

Question

I have a two page website -- a home page and an about page. I am trying to add a third page, but I am having a hard time figuring out the correct code.

I have this PHP at the top of my index.php page...

$tmp=str_replace("index.php","",$_SERVER['QUERY_STRING']);
$tmp=explode("/",$tmp);
$i=1;
$path=$_SERVER['REQUEST_URI'];
foreach($tmp as $str){
    if($i==1){
        $q=$str;
        $path=str_replace('about/','',$path);
        break;
    }
    $i++;
}
?>

And this in my nav area...

    <ul class="nav navbar-nav"> <li<?php if(empty($q)){echo"
class=\"active\"";}?>><a href="/"><i class="fa fa-home fa-fw"></i>
Home</a></li>

    </ul> <?php if(defined('emailReceiver')&&emailReceiver){?> <ul
class="nav navbar-nav navbar-right">

            <li<?php if(!empty($q)&&$q=="about"){echo"
        class=\"active\"";}?>><a href="<?php echo$path;?>about/"><i
        class="fa fa-question-circle fa-fw"></i>  About This
        Site</a></li> </ul>

I think I need to create other instances of $i -- but I am not sure exactly what.