3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $pass = str_repeat('a', 1024 * 1024 * 20); echo memory_get_peak_usage()/(1024*1024) . 'MB';
Output for 7.0.0 - 7.1.0
20.333702087402MB
Output for hhvm-3.10.0 - 3.12.0
2MB
Output for 5.5.0 - 5.6.28
20.20760345459MB
Output for 5.4.10 - 5.4.45
20.208045959473MB
Output for 5.4.0 - 5.4.9
20.207542419434MB
Output for 5.3.11 - 5.3.29
20.59196472168MB
Output for 5.3.0 - 5.3.10
20.591674804688MB
Output for 5.2.10 - 5.2.17
20.074172973633MB
Output for 5.2.7 - 5.2.9
20.074203491211MB
Output for 5.2.3 - 5.2.6
20.074508666992MB
Output for 5.2.1 - 5.2.2
20.072532653809MB
Output for 5.0.0 - 5.2.0
Fatal error: Call to undefined function memory_get_peak_usage() in /in/bODc4 on line 5
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: memory_get_peak_usage() in /in/bODc4 on line 5
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: memory_get_peak_usage() in /in/bODc4 on line 5
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: memory_get_peak_usage() in /in/bODc4 on line 5