Simple class to get the idea where is the bottlenecks on the code

gistfile1.txt

class Microtimer {
  static $start;
  static $count = 0;
  static $activated = false;
  static function init(){
    self::$start = microtime(true);
  }
  static function show($label=''){
    $stop = microtime(true);
    print "*".(self::$count++).":".($stop-self::$start).":".$label."*";
  }
  static function activateLevel($value){
    self::$activated = $value;
  }
  static function show1($label){
    if (self::$activated){
        self::show($label);
    }
  }
}
Microtimer::init();