3v4l.org

run code in 300+ PHP versions simultaneously
<?php $startMemory = memory_get_usage(); $array = range(1, 100000); echo memory_get_usage() - $startMemory, " bytes\n";
Output for 8.2.0 - 8.2.13, 8.3.0
2101328 bytes
Output for 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.34, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.26
4198480 bytes
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
14649032 bytes
Output for 5.4.10 - 5.4.45
14649096 bytes
Output for 5.4.0 - 5.4.9
14649080 bytes
preferences:
77.01 ms | 410 KiB | 5 Q