php - Creation of new objects slows down? -


i searching why script slows down growing number of objects. not find error on side. script creating objects. i've disabled possible variables.

for ($i = 0; $i < $ilen; $i++) {     $row = db_row($res, $i);     echo str_replace(" ", "&nbsp;", str_pad("obj" . $i, 10));      $time = microtime(true);     $element = new datastructureelement($row['code']);     echo "new: " . number_format((microtime(true) - $time) * 1000, 1) . "ms\n"; }  class datastructureelement {  ...  function __construct($code, $recover = false) {     $time = microtime(true);     parent::__construct();     $this->code = $code = enc::seourl($code);     $this->key = 'element:' . $code;      if ($recover) $this->recover();      $this->properties = new datastructureproperties($code);     $this->rules = new datastructurepropertiesrules($code);      $this->searchindex = new datasearchindexelement($code);     $this->searchgroup = new datasearchgroupelement($code);     echo "__constuct(): " . number_format((microtime(true) - $time) * 1000000, 1) . "&micro;s ";  }  ...  }   obj0      __constuct(): 4,512.8µs new: 5.6ms   obj1      __constuct(): 150.9µs new: 1.5ms   obj2      __constuct(): 149.0µs new: 1.2ms   obj3      __constuct(): 141.1µs new: 1.1ms   obj4      __constuct(): 142.8µs new: 1.1ms   obj5      __constuct(): 140.9µs new: 1.1ms   obj6      __constuct(): 197.9µs new: 1.4ms    ...  obj1993   __constuct(): 237.9µs new: 11.3ms obj1994   __constuct(): 245.1µs new: 11.8ms   obj1995   __constuct(): 240.8µs new: 18.9ms   obj1996   __constuct(): 250.1µs new: 12.0ms   obj1997   __constuct(): 303.0µs new: 12.3ms   obj1998   __constuct(): 252.0µs new: 12.4ms   obj1999   __constuct(): 338.1µs new: 12.3ms

the first has high time because of include() in autoloader. __construct() has new sub objects don't raises fast original new operator. thought accessing object done handler in o(1) , not in o(n). i'm using php 5.2.3.

anyone helpful advice?

thank you.


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