3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $max = 100; $arr = array_fill(0, $max, 1); $mem = memory_get_usage(true); foreach ($arr as $key=>$val) { $arr[$max+1] = 9999; } echo $mem-memory_get_usage();
Output for 7.0.0 - 7.1.0
1741920
Output for hhvm-3.12.0
-1793352
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.5.24 - 5.6.28
33408
Output for 5.4.10 - 5.4.45
32888
Output for 5.4.0 - 5.4.9
33416
Output for 5.3.11 - 5.3.29
154592
Output for 5.3.0 - 5.3.10
154896
Output for 5.2.10 - 5.2.17
172712
Output for 5.2.7 - 5.2.9
162104
Output for 5.2.3 - 5.2.6
161784
Output for 5.2.2
163864
Output for 5.2.1
164392
Output for 5.0.0 - 5.2.0
Fatal error: Call to undefined function memory_get_usage() in /in/sTCt9 on line 5
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: memory_get_usage() in /in/sTCt9 on line 5
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: memory_get_usage() in /in/sTCt9 on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: memory_get_usage() in /in/sTCt9 on line 5