3v4l.org

run code in 300+ PHP versions simultaneously
<?php $ltActive = null; $rtActive = 1; if($ltActive && $rtActive){ $class = 'class when both sidebars are active'; }else(!$ltActive && !$rtActive){ $class = 'class when both sidebars are inactive'; }else{ $class = 'class when only one of the sidebars is active (either one)'; } print $class;

Here you find the average performance (time & memory) of each version. A grayed out version indicates it didn't complete successfully (based on exit-code).

VersionSystem time (s)User time (s)Memory (MiB)
5.4.110.0140.05911.98
5.4.100.0140.04611.98
5.4.90.0160.04311.98
5.4.80.0160.04111.99
5.4.70.0150.04111.98
5.4.60.0180.03911.98
5.4.50.0130.04511.98
5.4.40.0140.04211.97
5.4.30.0160.04211.96
5.4.20.0200.06611.96
5.4.10.0190.03911.96
5.4.00.0130.04411.46
5.3.210.0130.04712.68
5.3.200.0240.06812.68
5.3.190.0190.04512.68
5.3.180.0150.04512.68
5.3.170.0270.06312.67
5.3.160.0170.04212.68
5.3.150.0160.04312.67
5.3.140.0170.04312.66
5.3.130.0170.04312.66
5.3.120.0150.04512.66
5.3.110.0150.04512.66
5.3.100.0130.04712.12
5.3.90.0170.04312.08
5.3.80.0240.06512.08
5.3.70.0200.05412.08
5.3.60.0140.04612.07
5.3.50.0150.04412.00
5.3.40.0150.04512.00
5.3.30.0150.04311.95
5.3.20.0160.04311.71
5.3.10.0160.04011.67
5.3.00.0150.04111.66

preferences:
136.86 ms | 1399 KiB | 7 Q