title: php shell command error GLIBCXX_3.4.9 not found
body: <p>Im trying to execute shell command from php to convert files to pdf but i get this error.<br>
  Could someone explain me in details how to fix it?<br>
  Im not so good in linux(<br>
  and also if i execute command straight through terminal everything works.</p>
  
  <pre><code>    /usr/lib/libreoffice/program/oosplash: /opt/lampp/lib/libstdc++.so.6:
      version `GLIBCXX_3.4.9' not found 
      (required by /usr/lib/libreoffice/program/../ure-link/lib/libuno_sal.so.3)
  </code></pre>