3v4l.org

run code in 300+ PHP versions simultaneously
<?php define('KEYS', 1000); $a = array(); function fill(&$arr) { for ($i = 1; $i <= 10; $i++) { $arr['key-' . $i] = $i; } } /*function read_key(&$arr) { for ($i = 1; $i <= KEYS; $i++) { for ($j = 1; $j <= 10; $i++) { $v = $arr['key-' . $i]; } } }*/ function for_each(&$arr) { for ($i = 1; $i <= KEYS; $i++) { foreach ($arr as $key => $value) { $v = $value; } } } fill($a); //read_key($a); for_each($a);
Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
preferences:
229.95 ms | 406 KiB | 356 Q