3v4l.org

run code in 300+ PHP versions simultaneously
<?php $a = (object)['a' => (object)['b' => 1]]; var_dump($a->a->b); var_dump(empty($a->a->b);

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)
7.0.00.0030.07020.20
5.6.160.0100.04020.71
5.6.150.0030.08018.29
5.6.140.0200.06718.27
5.6.130.0100.07718.19
5.6.120.0130.06321.14
5.6.110.0130.07321.13
5.6.100.0070.05321.08
5.6.90.0070.08720.95
5.6.80.0100.07720.53
5.5.300.0070.08018.03
5.5.290.0170.06017.99
5.5.280.0170.06720.89
5.5.270.0100.04020.97
5.5.260.0030.09320.67
5.5.250.0070.07320.46
5.5.240.0230.07320.15

preferences:
141.94 ms | 1394 KiB | 7 Q