Simple function to benchmark code

Simple function to benchmark code.php

<?php

   function benchmark($function, $args = null, $iterations = 1, $timeout = 0)
   {
      set_time_limit($timeout);

      if (is_callable($function) === true) {
         list($usec, $sec) = explode(" ", microtime());
         $start =  ((float)$usec + (float)$sec);          

         for ($i = 1; $i <= $iterations; ++$i) {
            call_user_func_array($function, (array)$args);
         }

         list($usec, $sec) = explode(" ", microtime());
         $end =  ((float)$usec + (float)$sec);          

         return round(($end - $start), 4);
      }

      return false;
   }
   
   // usage
   $results = array();
   $results[] = benchmark('myfunc', 'arg1', 10);
   $results[] = benchmark('myfunc2', array('arg1', 'arg2'));
   $results[] = benchmark('myfunc3');
   print_r($results);