title: Autoload classmap in PHP
body: <p>I read somewhere that classmap autoloading is faster than PSR-0/PSR-4. Of course for development process is better to use PSR-0/PSR-4. We can easily create a classmap via composer with <code>-o</code> param from PSR-0/PSR-4. </p>
  
  <p><strong>My question</strong>: is classmap autoloading really faster? With all vendors I have almost 3000 classes in my project. It means <code>autoload_classmap.php</code> file with 3000 lines (and an array with 3000 items). Is it still faster then autoloading using PSR-0/PSR-4 in production?</p>