3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php var_dump(memory_get_usage()); $arr = [1,2,3]; var_dump(memory_get_usage()); foreach ($arr as $k => $v) { var_dump(memory_get_usage()); if (!isset($arr[$k])) { var_dump(memory_get_usage()); } }
Output for 7.1.0
int(347640) int(347672) int(347672) int(347672) int(347672)
Output for 7.0.0 - 7.0.14
int(347640) int(348048) int(348048) int(348048) int(348048)
Output for hhvm-3.10.0 - 3.12.0
int(2097152) int(2097152) int(2097152) int(2097152) int(2097152)
Output for 5.6.8 - 5.6.28
int(218304) int(219064) int(219288) int(219288) int(219288)
Output for 5.5.24 - 5.5.35
int(218304) int(219048) int(219272) int(219272) int(219272)
Output for 5.4.10 - 5.4.45
int(218824) int(219568) int(219792) int(219792) int(219792)
Output for 5.4.0 - 5.4.9
int(218296) int(219040) int(219264) int(219264) int(219264)
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/T3J1N on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/T3J1N on line 5
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/T3J1N on line 5
Process exited with code 255.