title: Are namespaces bad for performance? (PHP)
body: <p>I've made some changes for a php framework to suport namespaces and the result wasn't as expected. For a simple test (mostly framework classes loaded) the execution time slowed down with ~10%.</p>
  
  <p>From your experience, is it worth it to use namespaces on large apps (considering the actual development level of PHP)?</p>