title: Long computation in php results in 503 error
body: <p>I have script that takes long time to execute. In a result server responds in 503 error. How can I set longer execution time?</p>
  
  <p>In my PHP script I set:</p>
  
  <pre><code>set_time_limit(0);
  ignore_user_abort(true);
  </code></pre>