Output the result of PHP in HTML

Output the result of PHP in HTML

My task is to display the output of php script in HTML. It seems like,
there is a problem with My PHP code, which i cant make out. Please take a
look at my code and let me know where I am going wrong.thanks in advance
Here is my HTML
<form id="form" name="form" method="post" action="NetOptInput1.html">
<label> Please wait. Your data is being processed.
</label><br>
<br>
<label>Token Number for the submitted Data set:</label><br />
<?php
include("GetToken.php");
echo $result;
?> <br>
<div style="text-align: center"><br><br>
<input type="submit" name="submit" id="submit" value="Home" class="submit"
onClick = "gotoResults()">
<div class="spacer"></div>
</form>
and here is my PHP
<?php
function get_value_of($Token Number)
{
$lines = file('Token.txt');
foreach (array_values($lines) AS $line)
{
list($key, $val) = explode('=', trim($line) );
if (trim($key) == $Token Number)
{
return $val;
}
}
return false;
}
?>