PDF extension does not load
<p>I'm using <a href="http://www.solitude.dk/filethingie/documentation" rel="nofollow">filethingie</a> to upload files to my website.
When i upload files it gaves following error.</p>

<pre><code>[07-Feb-2013 08:52:28 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so: cannot open shared object file: No such file or directory in Unknown on line 0
[07-Feb-2013 08:55:00 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so: cannot open shared object file: No such file or directory in Unknown on line 0
[07-Feb-2013 08:55:01 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so: cannot open shared object file: No such file or directory in Unknown on line 0
[07-Feb-2013 08:57:16 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so: cannot open shared object file: No such file or directory in Unknown on line 0
[07-Feb-2013 08:57:16 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so: cannot open shared object file: No such file or directory in Unknown on line 0
[07-Feb-2013 08:58:19 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so: cannot open shared object file: No such file or directory in Unknown on line 0
[07-Feb-2013 08:58:19 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so: cannot open shared object file: No such file or directory in Unknown on line 0
[07-Feb-2013 08:58:28 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so: cannot open shared object file: No such file or directory in Unknown on line 0
[07-Feb-2013 08:58:29 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so: cannot open shared object file: No such file or directory in Unknown on line 0
[07-Feb-2013 08:58:52 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so: cannot open shared object file: No such file or directory in Unknown on line 0
[07-Feb-2013 08:58:55 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so: cannot open shared object file: No such file or directory in Unknown on line 0
[07-Feb-2013 09:02:19 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so: cannot open shared object file: No such file or directory in Unknown on line 0
[07-Feb-2013 09:02:25 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so: cannot open shared object file: No such file or directory in Unknown on line 0
[07-Feb-2013 09:02:29 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so: cannot open shared object file: No such file or directory in Unknown on line 0
[07-Feb-2013 09:02:54 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so: cannot open shared object file: No such file or directory in Unknown on line 0
[07-Feb-2013 09:02:59 UTC] PHP Warning:  preg_match() [&lt;a href='function.preg-match'&gt;function.preg-match&lt;/a&gt;]: Unknown modifier '\' in /home/softlogi/public_html/Softlogic_Research/ft-admin.php on line 113
[07-Feb-2013 09:03:06 UTC] PHP Warning:  PHP Startup: Unable to load dynamic library '/usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so' - /usr/local/lib/php/extensions/no-debug-non-zts-20090626/pdf.so: cannot open shared object file: No such file or directory in Unknown on line 0
</code></pre>

<p>And displays </p>

<blockquote>
  <p>name.pdf was not uploaded. File type not allowed</p>
</blockquote>

<p>Why is this issue occoers and how can i fix it?</p>
