3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A {} var_dump(new a instanceof A); // true var_dump(new a instanceof A::class); // Fatal error var_dump(is_a(new a, A::class)); // true var_dump(is_a(new a, A); // Undefined constant A

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)
8.4.80.0210.00619.57
8.4.70.0190.00719.56
8.4.60.0430.00617.70
8.4.50.0410.00617.74
8.4.40.0400.01217.58
8.4.30.0360.00917.37
8.4.20.0280.00317.80
8.4.10.0200.00717.80
8.3.220.0180.00716.97
8.3.210.0170.00616.97
8.3.200.0360.00916.97
8.3.190.0190.00316.97
8.3.180.0360.00516.97
8.3.170.0290.00816.97
8.3.160.0420.01016.97
8.3.150.0450.00816.97
8.3.140.0250.00416.97
8.3.130.0150.00516.97
8.3.120.0190.01016.97
8.3.110.0310.00316.97
8.3.100.0350.00716.97
8.3.90.0280.00516.97
8.3.80.0190.00416.97
8.3.70.0220.00616.97
8.3.60.0360.00616.97
8.3.50.0240.00316.97
8.3.40.0160.00517.74
8.3.30.0190.00317.39
8.3.20.0160.00417.64
8.3.10.0320.00617.54
8.3.00.0090.01217.55
8.2.280.0270.00916.97
8.2.270.0250.01016.97
8.2.260.0240.00516.97
8.2.250.0330.00716.97
8.2.240.0360.00716.97
8.2.230.0280.01416.97
8.2.220.0320.01116.97
8.2.210.0380.00616.97
8.2.200.0340.00816.97
8.2.190.0310.01116.97
8.2.180.0320.00716.97
8.2.170.0450.00817.54
8.2.160.0410.00517.45
8.2.150.0330.01017.35
8.2.140.0340.00617.20
8.2.130.0330.00517.18
8.2.120.0350.01017.47
8.2.110.0370.00717.52
8.2.100.0440.00817.13
8.2.90.0390.00717.32
8.2.80.0360.01117.16
8.2.70.0380.00517.28
8.2.60.0400.00417.45
8.2.50.0350.00817.15
8.2.40.0330.00617.52
8.2.30.0360.00417.28
8.2.20.0240.00517.62
8.2.10.0300.00717.25
8.2.00.0220.00817.38

preferences:
151.25 ms | 1342 KiB | 7 Q