3v4l.org

run code in 300+ PHP versions simultaneously
<?php $array = range(0, 1e5); echo memory_get_peak_usage()/1024 . 'kB' . PHP_EOL; foreach ($array as $i => $a) { (bool)$a; } echo memory_get_peak_usage()/1024 . 'kB';
Output for 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
2430kB 2430.1015625kB
Output for 8.1.0 - 8.1.28
4478.3046875kB 4478.4140625kB
Output for 8.0.0 - 8.0.30
4477.8203125kB 4478.109375kB
Output for 7.4.0 - 7.4.33
4478.1171875kB 4478.40625kB
Output for 7.3.0 - 7.3.33
4478.0390625kB 4478.328125kB
Output for 7.2.0 - 7.2.33
4474.1875kB 4474.4765625kB
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33
4438.4375kB 4438.7265625kB
Output for 5.6.0 - 5.6.40
14520.0078125kB 14520.3203125kB
Output for 5.5.0 - 5.5.38
14520.0078125kB 14520.3125kB
Output for 5.4.10 - 5.4.45
14520.4765625kB 14520.78125kB
Output for 5.4.0 - 5.4.9
14519.921875kB 14520.1875kB
preferences:
307.17 ms | 401 KiB | 376 Q