Cache $_SERVER['REQUEST_TIME'] : 1714028885<br />$_SERVER['REQUEST_TIME'] date   2024-04-25 03:08:05<br />$_SERVER['REQUEST_TIME'] cached 0 seconds ago<br />This cache expires each: 30 seconds<hr />Cache other class method : External call to other class successfull on 2024-04-25 03:08:05<br />This cache expires each: 60 seconds<hr />Cache & increment test num     : 1<hr />Cache a rand value    : 7456<br />This cache expires each: 10 seconds<hr />Cache an object     :object(stdClass)#5 (4) {
  ["id"]=>
  int(24)
  ["name"]=>
  string(12) "Product name"
  ["qty_random"]=>
  int(221)
  ["date_insert"]=>
  string(19) "2024-04-25 03:08:05"
}
<br />This Object cache expires each: 10 seconds<hr />Memory used: 513Kb<br />
<br />
Press 'refresh' to see how the cache changes ...  
<input type='button' value='Refresh' onclick='location.reload();'>