3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = range(1,100000); echo memory_get_usage(), "\n"; foreach ($a as $i => $v) { if (!$i){ echo memory_get_usage(), "\n"; $a[$i] = 111; echo memory_get_usage(), "\n"; } } echo memory_get_usage(), "\n";
Output for 7.4.0 - 7.4.1
4586344 4586376 8784856 4586376
Output for 7.3.0 - 7.3.13
4586264 4586296 8784776 4586296
Output for 7.2.0 - 7.2.26
4582352 4582384 8780864 4582384
Output for 7.1.26 - 7.1.33
4545744 4545776 8744256 4545776
preferences:
104.18 ms | 401 KiB | 56 Q