3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php $a = array(); for ($i = 0; $i < 100000; $i += 1) { $a[] = array("a" => "b"); } var_dump((memory_get_peak_usage(true) / 1024 / 1024) . "MB");
Output for 7.1.0 - 7.2.0
string(12) "6.00390625MB"
Output for 7.0.0 - 7.0.20
string(13) "42.00390625MB"
Output for 5.4.0 - 5.6.28
string(6) "43.5MB"
Output for 5.3.0 - 5.3.29
string(7) "47.75MB"
Output for 5.2.6 - 5.2.17
string(7) "45.75MB"
Output for 5.2.1 - 5.2.5
string(6) "45.5MB"
Output for 5.0.0 - 5.2.0
Fatal error: Call to undefined function memory_get_peak_usage() in /in/Kt5tc on line 7
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/Kt5tc on line 7
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/Kt5tc on line 7
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/Kt5tc on line 7