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_usage(true) - $mem;
Output for 5.2.1 - 7.1.0
0
Output for 5.0.0 - 5.2.0
Fatal error: Call to undefined function memory_get_usage() in /in/D7sZ3 on line 5
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected '&', expecting T_VARIABLE or '$' in /in/D7sZ3 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 '$' in /in/D7sZ3 on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `T_VARIABLE' or `'$'' in /in/D7sZ3 on line 6
Process exited with code 255.