Concatenating a CSS Class in a PHP Loop

Question

I want to add a class=active to the current page im on with php

class_navigation.php

$menu = array(
  'home'  => array('text'=>'Home',  'url'=>'?p=home'),
  'away'  => array('text'=>'About',  'url'=>'?p=about'),
  'about' => array('text'=>'Contact', 'url'=>'?p=contact'),
);

class class_navigation {
  public static function GenerateMenu($items) {
    $html = "<nav>\n";

foreach($items as $item) {
      $class ="";
      if ($page == $item) {
          $class = "class='active'";
       }
      $html .= "<a href='{$item['url']}' ".$class.">{$item['text']}
      </a>\n";
    }
    $html .= "</nav>\n";
    return $html;
  }
};

nav.php

<?php 
    echo class_navigation::GenerateMenu($menu); 
?>

index.php

require_once('class/class_navigation.php');
require_once('includes/head.php');
require_once('includes/nav.php');

switch($_GET['p']){
         case "home":
              $page = 'home';
              include_once('pages/home.php');
              break 1;
         case "about":
              $page = "about";
              include_once('pages/about.php');
              break 1;
         case "contact":
              $page = "contact";
              include_once('pages/contact.php');
              break 1;    
    }

require_once('includes/footer.php');

you want this $html .= "<a href='{$item['url']}' ".$class.">{$item['text']} </a>\n"; ? where $class = 'class="active"'; — Luthando Ntsekwa
– Luthando Ntsekwa, Commented Oct 27, 2015 at 9:52

Rene Korss · Accepted Answer · 2015-10-27 10:15:38Z

2

Remove $page in switch and modify your class to this.

Now GenerateMenu gets current page with $page = $_GET['p'];
Compares it to url value in your array.
parse_str(substr($item['url'], 1)); parses this url and you will get $p equaling to home, if url is '?p=home' etc.

<?php
class class_navigation {
    public static function GenerateMenu($items) {
        $html = "<nav>\n";
        $page = isset($_GET['p']) ? $_GET['p'] : '';

        foreach($items as $item) {
            $class = "";

            parse_str(substr($item['url'], 1));

            if ($page == $p) {
                $class = " class='active'";
            }

            $html .= "<a href='{$item['url']}'".$class.">{$item['text']}</a>\n";
        }

        $html .= "</nav>\n";
        return $html;
    }
}

edited Oct 27, 2015 at 10:15

answered Oct 27, 2015 at 10:12

Rene Korss

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