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Editorial Team
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Asked: 2026-06-05T22:49:38+00:00

I’ve been making a webpage with php and html following this tutorial . I

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I’ve been making a webpage with php and html following this tutorial. I was trying to setup a template where I could set various variables like title of the page, content, etc. But I’ve been running into some trouble getting things to set properly.

In my index page I have php start like:

<!DOCTYPE html>
<?php 
include('includes/meta.php');
$md = new metadata();
$md->setTitle("HELLOOOO");
?> 
...<!-- rest of html -->

then in my Metadata class in meta.php (contains the HTML):

<?php

class metadata
{
    private $title = "default";
    public function setTitle($title) { $this->title = $title; }
    public function getTitle() { return $this->title; }


}
 ?>
<head>
    <meta charset="utf-8">
    <title>
         <?php $md = new metadata();
             echo $md->getTitle();?>
    </title>

But “default” is always echoed for the title.

How can I properly set variables in separate classes / files? And what is the best convention of accomplishing this?

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1 Answer

  1. Editorial Team

    You’d need a singleton, because when you do new metadata();, you’re creating a new object, when in fact you want the one to reference the one that was created first.

    Here is a sample implementation:

    class metadata
{
    private $title = "default";
    private function __construct() {} // Private constructor

    private static $instance = null;
    public static function getInstance() {
       if( self::$instance == null) { 
           self::$instance = new metadata();
       }
       return self::$instance;
    }
    public function setTitle($title) { $this->title = $title; }
    public function getTitle() { return $this->title; }
}

    Now, you need to do:

    $md = metadata::getInstance();

    To get an object of the metadata class.

    See it work

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