title: mb_convert_encoding, undefined function while mbstring is enabled
body: <p>I have a server (Ubuntu 11.10 x64) running PHP 5.3.8 with Apache2 / MySQL. I'm currently working on a project where I'm required to do some specific character encoding, but I found out that none of the multibyte (mb_* functions) are working.</p>
  <p>However, when I look in phpinfo(), I see that multibyte support is enabled.</p>
  <p>I've tried things like apt-get install php5-mbstring, php-mbstring, php-multibyte, etc. etc. but none seem to work.</p>
  <p>Can anyone point me in the right direction for this? Thanks in advance!</p>
  <h1>edit: Fixed it by recompiling PHP (this was my last resort, which I initially wanted to avoid)</h1>
  <p>./configure --enable-mbstring</p>
  <p>The weird this is, phpinfo() already showed that it was enabled. I don't know why it didn't work before :/</p>