3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $vars = array(); $var = 'abc'; for($i = 0; $i< 10000; $i++){ $vars[] = $var; } echo round(get_memory_usage()/1024, 2), 'KB';
Output for 7.0.0 - 7.1.0
Fatal error: Uncaught Error: Call to undefined function get_memory_usage() in /in/nY4Qv:8 Stack trace: #0 {main} thrown in /in/nY4Qv on line 8
Process exited with code 255.
Output for 5.0.0 - 5.6.21, hhvm-3.10.0 - 3.12.0
Fatal error: Call to undefined function get_memory_usage() in /in/nY4Qv on line 8
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: get_memory_usage() in /in/nY4Qv on line 8
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: get_memory_usage() in /in/nY4Qv on line 8
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: get_memory_usage() in /in/nY4Qv on line 8