Online PHP editor | perf for 7ldOG

<?php session_start(); $_SESSION['foo'] = 1; class SessionIterator implements \Iterator { /** * @var array list of keys in the map */ private $_keys; /** * @var mixed current key */ private $_key; /** * Constructor. */ public function __construct() { $this->_keys = array_keys($_SESSION ?? []); } /** * Rewinds internal array pointer. * This method is required by the interface [[\Iterator]]. */ #[\ReturnTypeWillChange] public function rewind() { $this->_key = reset($this->_keys); } /** * Returns the key of the current array element. * This method is required by the interface [[\Iterator]]. * @return mixed the key of the current array element */ #[\ReturnTypeWillChange] public function key() { return $this->_key; } /** * Returns the current array element. * This method is required by the interface [[\Iterator]]. * @return mixed the current array element */ #[\ReturnTypeWillChange] public function current() { return isset($_SESSION[$this->_key]) ? $_SESSION[$this->_key] : null; } /** * Moves the internal pointer to the next array element. * This method is required by the interface [[\Iterator]]. */ #[\ReturnTypeWillChange] public function next() { do { $this->_key = next($this->_keys); } while (!isset($_SESSION[$this->_key]) && $this->_key !== false); } /** * Returns whether there is an element at current position. * This method is required by the interface [[\Iterator]]. * @return bool */ #[\ReturnTypeWillChange] public function valid() { return $this->_key !== false; } } $si = new SessionIterator(); foreach ($si as $key => $value) { var_dump($key, $value); }

Version	System time (s)	User time (s)	Memory (MiB)
8.3.12	0.009	0.000	18.80
8.3.11	0.006	0.003	20.94
8.3.10	0.006	0.003	18.45
8.3.9	0.008	0.000	26.77
8.3.8	0.009	0.000	16.88
8.3.7	0.009	0.006	16.75
8.3.6	0.016	0.000	18.68
8.3.5	0.011	0.007	20.08
8.3.4	0.011	0.008	21.96
8.3.3	0.013	0.007	19.17
8.3.2	0.003	0.006	24.18
8.3.1	0.009	0.000	24.66
8.3.0	0.007	0.011	26.16
8.2.24	0.003	0.006	18.45
8.2.23	0.006	0.003	22.58
8.2.22	0.006	0.003	24.06
8.2.21	0.006	0.006	26.77
8.2.20	0.006	0.003	18.37
8.2.19	0.015	0.000	16.58
8.2.18	0.011	0.011	25.92
8.2.17	0.000	0.019	18.97
8.2.16	0.008	0.006	22.96
8.2.15	0.007	0.000	25.66
8.2.14	0.007	0.010	24.66
8.2.13	0.014	0.004	26.16
8.2.12	0.008	0.000	26.16
8.2.11	0.000	0.008	20.64
8.2.10	0.000	0.011	20.32
8.1.30	0.011	0.004	16.09
8.1.29	0.007	0.003	30.84
8.1.28	0.015	0.006	25.92
8.1.27	0.005	0.003	24.02
8.1.26	0.000	0.007	26.35
8.1.25	0.000	0.007	28.09
8.1.24	0.007	0.003	18.64
8.1.23	0.009	0.000	18.68
8.1.13	0.024	0.006	18.33
8.1.6	0.005	0.003	17.65
8.0.19	0.004	0.006	16.88