3v4l.org

run code in 150+ php & hhvm versions
Bugs & Features
<?php $pass = str_repeat('a', 1024 * 512); echo memory_get_peak_usage()/(1024*1024) . 'MB';
Output for 7.0.0 - 7.1.0
0.83367919921875MB
Output for hhvm-3.10.0 - 3.12.0
2MB
Output for 5.5.24 - 5.6.28
0.70751953125MB
Output for 5.4.10 - 5.4.45
0.70796203613281MB
Output for 5.4.0 - 5.4.9
0.70745849609375MB
Output for 5.3.11 - 5.3.29
1.0918502807617MB
Output for 5.3.0 - 5.3.10
1.0915603637695MB
Output for 5.2.10 - 5.2.17
0.57405853271484MB
Output for 5.2.7 - 5.2.9
0.57408905029297MB
Output for 5.2.3 - 5.2.6
0.57439422607422MB
Output for 5.2.1 - 5.2.2
0.57241821289062MB
Output for 5.0.0 - 5.2.0
Fatal error: Call to undefined function memory_get_peak_usage() in /in/hkPCn 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/hkPCn 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/hkPCn 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/hkPCn on line 5