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 memory_get_peak_usage();
Output for 7.1.0
381680
Output for 7.0.0 - 7.0.14
381664
Output for hhvm-3.12.0
2097152
Output for hhvm-3.10.0

Process exited with code 153.
Output for 5.5.24 - 5.6.28
234328
Output for 5.4.10 - 5.4.45
234264
Output for 5.4.0 - 5.4.9
233736
Output for 5.3.11 - 5.3.29
637160
Output for 5.3.0 - 5.3.10
636856
Output for 5.2.10 - 5.2.17
94392
Output for 5.2.7 - 5.2.9
94424
Output for 5.2.3 - 5.2.6
94744
Output for 5.2.2
92664
Output for 5.2.1
102104
Output for 5.0.0 - 5.2.0
Fatal error: Call to undefined function memory_get_peak_usage() in /in/WsMah on line 11
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/WsMah on line 6
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1
Parse error: parse error, unexpected '&', expecting T_VARIABLE or '$' in /in/WsMah on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/WsMah on line 6
Process exited with code 255.