3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = []; for ($i = 0; $i < 10000; ++$i) $a[$i] = $i; var_dump(memory_get_usage());
Output for 7.4.0
int(915616)
Output for 7.3.0 - 7.3.12
int(915536)
Output for 7.2.0 - 7.2.25
int(911616)
Output for 7.1.25 - 7.1.33
int(874944)
Output for 7.1.0 - 7.1.1, 7.1.7 - 7.1.10
int(875016)
Output for 7.1.2 - 7.1.6
int(875104)
Output for 7.0.0 - 7.0.20
int(875032)
preferences:
86.17 ms | 401 KiB | 84 Q