3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $data = []; for($i = 0; $i < 800000; $i++) { $data[] = "あ"; } echo "point1:".memory_get_usage()."\n"; while(list($key, $value) = each($data)) {} echo "point2:".memory_get_usage()."\n";
Output for 7.1.0
point1:33906056 point2:33906112
Output for 7.0.0 - 7.0.14
point1:33906104 point2:33906160
Output for 5.4.0 - 5.6.28
Fatal error: Allowed memory size of 67108864 bytes exhausted (tried to allocate 32 bytes) in /in/H6Tre on line 4
Process exited with code 255.
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/H6Tre on line 2
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/H6Tre on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/H6Tre on line 2
Process exited with code 255.