title: Run an external program with php
body: <p>i have a problem with php ! i want to run an external program with php . this program work in command line and in linux platform . so it must be work just fine . but i try more time and i can't run it . so what's wrong !
  this is the link of the program : <a href="http://www.lalescu.ro/liviu/fet/" rel="nofollow">http://www.lalescu.ro/liviu/fet/</a>
  and this is the command which work fine in command line and not the case in php :</p>
  
  <pre><code>./fet --inputfile=Hopwood.fet --outputdir=out
  </code></pre>
  
  <p>and this is the php code :</p>
  
  <pre><code>&lt;?php
  `./fet --inputfile=Hopwood.fet --outputdir=out`
  ?&gt;
  </code></pre>
  
  <p>i hope to solve this pb .
  thanks in advance ..</p>
  
  <p><strong>Update</strong> i upload the executable program and the Hopwood.fet file for you try it ..
  this is a link :
  <a href="http://rapidshare.com/files/454756427/fet.tar.gz" rel="nofollow">http://rapidshare.com/files/454756427/fet.tar.gz</a></p>