Determining the variables with the highest and lowest values
<p>For example if I have:</p>

<pre><code>$person1 = "10";
$person2 = "-";
$person3 = "5";
</code></pre>

<p>I need to determine the person with the highest number and prepend their string with a "W" and also determine the person with the lowest (numeric) number and prepend their string with a "L"</p>

<p>I am trying to output:</p>

<pre><code>$person1 = "W10";
$person2 = "-";
$person3 = "L5";
</code></pre>
