使用php无效的活动当前页面

Question

I have this code in header.php:

<?php

 $page = "";
?>

<ul class="nav navbar-nav navbar-right nav-pos">
   <li <?php if ($page == "home") { ?> class="active"<?php } ?>><a href="home.php">Home</a></li>
   <li <?php if($page == 'about') { ?> class="active"<?php } ?>><a href="aboutus.php">About us</a></li>
   <li <?php if($page == 'contact'){ ?> class="active"<?php } ?>><a href="contactus.php">Contact us</a></li>
   <li class="hidden-xs"><a href="#search"><i class="fa fa-search fa-rotate-90"></i></a></li>
</ul>

and on every page i put this code(and the name change depends on current page):

<?php include 'header.php';
  $page = 'about' ?>

and in css i made this:

.active{color:red }

But it is not working... any idea why?

Thank you for time, I really appreciate it

Answer 1

first you should remove $page = ""; from header

<?php
  $page = "";//remove this line in header file
?>

<ul class="nav navbar-nav navbar-right nav-pos">

Second in every page swap these two lines

<?php
   $page = 'about';//swap these lines
   include 'header.php' ;   
?>

some details: when header load then $page is empty and your conditions false in li tag. so, before header load you should assign value to $page

the best way: you should used $_SERVER['REQUEST_URI'] instead of hard coded $page. Example:

$url= explode('/',$_SERVER['REQUEST_URI']);
$page = end($request_array);//this show your_page.php
$page=preg_replace('"\.php$"', '', $page )//this will remove .php extension