nl2br in PHP suddenly doesn't work anymore
<p>I noticed that one of my scripts wasn't working anymore, and started investigating. Eventually it boiled down to <code>nl2br()</code> not working anymore. Check out what results I get from a test script:</p>

<pre><code>nl2br("asd",true): NULL
nl2br("asd",false): NULL
nl2br("asd"): string(3) "asd"
</code></pre>

<p>If the second parameter is specified, it returns NULL. WTF? The PHP installation on that box hasn't been touched in ages, it's an aging 5.2.6 on Apache2. Why has it stopped working all of a sudden?</p>
