title: PHP script is killed without explanation
body: <p>I'm starting my php script in the following way:</p>
  
  <pre><code>bash  
  cd 'path'   
  php -f 'scriptname'.php
  </code></pre>
  
  <p>There is no output while the php script is running.  </p>
  
  <p>After a time, the php script responds with:</p>
  
  <pre><code>Killed 
  </code></pre>
  
  <p>My idea is that it reached the memory_limit:   <code>ini_set('memory_limit', '40960M');</code></p>
  
  <p>Increasing the memory limit seemed to solve the problem, but it only increased the edge.</p>
  
  <p>What exactly does that <code>Killed</code> phrase mean?</p>