title: Increasing nesting function calls limit
body: <p>There is one very bad limit in PHP: if you call some function a1() that calls a2(), that calls a3... so when <code>a99()</code> will call <code>a100()</code> you will see</p>
  
  <blockquote>
    <p>Fatal error: Maximum function nesting level of '100' reached, aborting!</p>
  </blockquote>
  
  <p>Is there any way to increase the limit of 100 nesting calls to 500 or 10000?</p>
  
  <p>This is critical for me because I'm developing an event-based system with a lot of callbacks.</p>