3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $memory1 = memory_get_usage(true); print 'before: ' . $memory1 ."\n"; $keys = array(); for ($i = 0; $i<150000; $i++) { $keys[] = 'pref:keyname:' . rand(1000000, 19999999); } asort($keys); $memory2 = memory_get_usage(true); print 'after: ' . $memory2 ."\n"; print 'allocated: ' . ($memory2 - $memory1);
Output for 7.0.0 - 7.1.0
before: 2097152 after: 17825792 allocated: 15728640
Output for hhvm-3.12.0
before: 305064 after: 13796600 allocated: 13491536
Output for hhvm-3.10.0
before: 303424 after: 13794960 allocated: 13491536
Output for 5.4.0 - 5.6.28
before: 262144 after: 29097984 allocated: 28835840
Output for 5.3.0 - 5.3.29
before: 786432 after: 29622272 allocated: 28835840
Output for 5.2.6 - 5.2.17
before: 262144 after: 27787264 allocated: 27525120
Output for 5.2.1 - 5.2.5
before: 262144 after: 27525120 allocated: 27262976
Output for 5.0.0 - 5.2.0
<br /> <b>Fatal error</b>: Call to undefined function memory_get_usage() in <b>/in/5PlNa</b> on line <b>2</b><br />
Process exited with code 255.
Output for 4.4.5 - 4.4.9
<br /> <b>Fatal error</b>: Call to undefined function: memory_get_usage() in <b>/in/5PlNa</b> on line <b>2</b><br />
Process exited with code 255.
Output for 4.3.2 - 4.4.4
<br /> <b>Fatal error</b>: Call to undefined function: memory_get_usage() in <b>/in/5PlNa</b> on line <b>2</b><br />
Process exited with code 255.
Output for 4.3.0 - 4.3.1
<br /> <b>Fatal error</b>: Call to undefined function: memory_get_usage() in <b>/in/5PlNa</b> on line <b>2</b><br />