t it doesn't work.</span></p>
The standard fonts have the Euro character at position 128. You can define a constant like this
for convenience:
<div class="doc-source">
<pre><code>define('EURO', chr(128));</code></pre>
</div>
</li>

<li id='q5'>
<p><b>5.</b> <span class='question'>I try to display a variable in the Header method but nothing prints.</span></p>
You have to use the <code>global</code> keyword to access global variables, for example:
<div class="doc-source">
<pre><code>function Header()
{
    gl