3v4l.org

run code in 300+ PHP versions simultaneously
<?php final class B {} class_alias(B::class, 'a'); $serializedInstanceOfA = 'O:1:"a":0:{}'; var_dump(unserialize($serializedInstanceOfA));

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)
8.4.120.0110.00520.82
8.4.110.0140.00622.38
8.4.100.0050.00422.28
8.4.90.0100.01118.73
8.4.80.0080.00119.39
8.4.70.0100.00918.04
8.4.60.0060.00322.03
8.4.50.0130.00821.54
8.4.40.0100.01017.53
8.4.30.0080.00818.87
8.4.20.0100.01021.42
8.4.10.0090.00019.50
8.3.250.0070.00218.93
8.3.240.0140.00616.22
8.3.230.0050.00616.39
8.3.220.0120.00619.06
8.3.210.0040.00316.58
8.3.200.0100.00016.63
8.3.190.0100.00819.08
8.3.180.0120.00716.68
8.3.170.0090.00918.68
8.3.160.0000.01816.49
8.3.150.0120.00617.04
8.3.140.0060.00316.75
8.3.130.0050.00318.15
8.3.120.0140.00720.62
8.3.110.0040.00420.94
8.3.100.0050.00318.20
8.3.90.0110.00716.38
8.3.80.0230.00830.84
8.3.70.0190.01130.84
8.3.60.0290.00430.84
8.3.50.0060.00630.84
8.3.40.0140.01130.84
8.3.30.0150.01030.84
8.3.20.0270.00030.84
8.3.10.0280.00730.84
8.3.00.0310.00030.84
8.2.290.0110.00620.20
8.2.280.0120.00720.11
8.2.270.0150.00017.04
8.2.260.0090.00618.44
8.2.250.0040.00416.37
8.2.240.0030.00617.18
8.2.230.0080.00022.58
8.2.220.0100.00024.06
8.2.210.0080.00326.77
8.2.200.0220.00630.84
8.2.190.0250.00330.84
8.2.180.0230.00330.84
8.2.170.0200.01030.84
8.2.160.0260.00330.84
8.2.150.0220.00730.84
8.2.140.0220.00930.84
8.2.130.0250.00330.84
8.2.120.0250.00430.84
8.2.110.0160.01230.84
8.2.100.0210.00730.84
8.2.90.0230.00430.84
8.2.80.0240.00330.84
8.2.70.0290.00030.84
8.2.60.0290.00330.84
8.2.50.0180.00930.84
8.2.40.0210.00630.84
8.2.30.0270.00030.84
8.2.20.0160.01030.84
8.2.10.0160.01030.84
8.2.00.0210.00430.84
8.1.330.0110.00422.12
8.1.320.0090.00916.30
8.1.310.0090.00916.55
8.1.300.0090.00618.48
8.1.290.0190.00830.84
8.1.280.0260.00030.84
8.1.270.0180.01230.84
8.1.260.0230.00630.84
8.1.250.0270.00530.84
8.1.240.0220.00330.84
8.1.230.0200.00630.84
8.1.220.0220.00430.84
8.1.210.0230.00430.84
8.1.200.0200.00030.84
8.1.190.0210.00030.84
8.1.180.0210.00030.84
8.1.170.0180.00430.84
8.1.160.0180.00330.84
8.1.150.0170.00430.84
8.1.140.0180.00330.84
8.1.130.0190.00530.84
8.1.120.0210.00430.84
8.1.110.0210.00330.84
8.1.100.0200.00330.84
8.1.90.0220.00330.84
8.1.80.0250.00830.84
8.1.70.0200.00730.84
8.1.60.0140.01030.84
8.1.50.0240.00530.84
8.1.40.0170.00430.84
8.1.30.0220.00030.84
8.1.20.0160.00530.84
8.1.10.0180.00330.84
8.1.00.0160.00630.84

preferences:
58.42 ms | 403 KiB | 5 Q