3v4l.org

run code in 300+ PHP versions simultaneously
<?php class User { public $name = "admin"; } class UserCouple implements Serializable { public $user1; public $user2; public function serialize() { return serialize(array(1, serialize(array($this->user1, $this->user2)))); } public function unserialize($serialized) { list($_, $subSerialized) = unserialize($serialized); list($this->user1, $this->user2) = unserialize($subSerialized); } } $user = new User(); $couple = new UserCouple(); $couple->user1 = $user; $couple->user2 = $user; var_dump($couple); var_dump(unserialize(serialize($couple)));

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)
8.3.70.0110.00416.88
8.3.60.0070.00716.88
8.3.50.0120.00922.21
8.3.40.0140.00318.88
8.3.30.0070.00718.67
8.3.20.0000.00823.65
8.3.10.0060.00320.29
8.3.00.0050.00320.67
8.2.190.0100.00718.30
8.2.180.0100.01018.28
8.2.170.0140.00022.96
8.2.160.0140.00020.29
8.2.150.0060.00324.18
8.2.140.0080.00024.66
8.2.130.0080.00026.16
8.2.120.0090.00019.48
8.2.110.0030.00620.78
8.2.100.0060.00618.03
8.2.90.0000.00819.17
8.2.80.0040.00417.97
8.2.70.0000.00917.63
8.2.60.0000.00817.80
8.2.50.0000.00918.10
8.2.40.0000.00820.47
8.2.30.0040.00421.16
8.2.20.0040.00418.02
8.2.10.0080.00018.16
8.2.00.0060.00318.23
8.1.280.0040.01125.92
8.1.270.0060.00323.90
8.1.260.0080.00026.35
8.1.250.0140.00328.09
8.1.240.0070.00421.45
8.1.230.0090.00317.42
8.1.220.0040.00417.78
8.1.210.0080.00018.77
8.1.200.0070.00317.35
8.1.190.0030.00617.22
8.1.180.0040.00418.10
8.1.170.0000.00818.59
8.1.160.0000.00719.00
8.1.150.0000.00720.32
8.1.140.0030.00619.51
8.1.130.0040.00418.96
8.1.120.0000.00717.35
8.1.110.0000.00717.49
8.1.100.0070.00017.51
8.1.90.0050.00317.44
8.1.80.0000.00717.47
8.1.70.0070.00017.53
8.1.60.0050.00317.48
8.1.50.0040.00417.48
8.1.40.0040.00417.56
8.1.30.0040.00417.68
8.1.20.0080.00017.56
8.1.10.0060.00317.59
8.1.00.0080.00017.48
8.0.300.0040.00418.77
8.0.290.0050.00316.75
8.0.280.0040.00418.45
8.0.270.0070.00017.27
8.0.260.0000.00717.18
8.0.250.0000.00716.95
8.0.240.0020.00517.09
8.0.230.0070.00017.02
8.0.220.0000.00716.91
8.0.210.0070.00016.95
8.0.200.0040.00416.92
8.0.190.0040.00417.05
8.0.180.0040.00416.95
8.0.170.0100.00016.89
8.0.160.0040.00417.06
8.0.150.0000.00816.95
8.0.140.0030.00316.95
8.0.130.0000.00613.44
8.0.120.0070.00016.82
8.0.110.0000.00817.04
8.0.100.0040.00416.75
8.0.90.0030.00516.85
8.0.80.0060.00916.92
8.0.70.0070.00016.79
8.0.60.0040.00417.02
8.0.50.0080.00017.08
8.0.30.0100.01117.10
8.0.20.0110.00817.43
8.0.10.0080.00017.14
8.0.00.0100.00716.68
7.4.330.0000.00515.55
7.4.320.0000.00616.64
7.4.300.0000.00616.59
7.4.290.0040.00716.52
7.4.280.0050.00216.59
7.4.270.0000.00816.49
7.4.260.0000.00716.61
7.4.250.0070.00016.48
7.4.240.0070.00016.61
7.4.230.0050.00216.63
7.4.220.0150.01216.67
7.4.210.0100.00616.49
7.4.200.0040.00416.63
7.4.160.0050.01116.63
7.4.150.0120.00617.40
7.4.140.0140.00717.86
7.4.130.0090.01016.60
7.4.120.0150.00416.62
7.4.110.0130.00716.48
7.4.100.0120.00616.54
7.4.90.0070.01316.50
7.4.80.0070.01119.39
7.4.70.0060.01016.67
7.4.60.0100.00716.68
7.4.50.0000.01716.59
7.4.40.0140.00316.47
7.4.30.0080.00816.48
7.4.00.0100.00714.79
7.3.330.0000.00713.45
7.3.320.0030.00313.27
7.3.310.0040.00416.48
7.3.300.0000.00716.50
7.3.290.0000.00716.46
7.3.280.0070.01116.46
7.3.270.0110.00817.40
7.3.260.0100.00916.56
7.3.250.0090.01116.52
7.3.240.0090.00816.33
7.3.230.0090.00916.38
7.3.210.0070.01016.50
7.3.200.0120.00616.45
7.3.190.0130.00316.47
7.3.180.0120.00416.47
7.3.170.0100.00616.61
7.3.160.0130.00316.49
7.2.330.0050.01416.84
7.2.320.0080.00816.78
7.2.310.0090.00916.46
7.2.300.0090.00916.89
7.2.290.0070.01016.61
7.2.60.0100.00316.79
7.1.200.0030.00715.63
7.1.70.0000.00817.23
7.1.60.0030.00917.30
7.1.50.0000.01516.95
7.1.40.0000.01116.35
7.1.30.0030.00916.63
7.1.20.0040.00716.78
7.1.10.0000.00816.67
7.1.00.0000.00716.82
7.0.200.0000.00816.76
7.0.190.0040.00416.69
7.0.180.0040.01116.09
7.0.170.0080.00016.29
7.0.160.0040.00416.22
7.0.150.0080.00016.34
7.0.140.0040.00416.36
7.0.130.0030.00516.70
7.0.120.0000.01016.48
7.0.110.0080.00416.43
7.0.100.0100.01316.42
7.0.90.0000.00716.37
7.0.80.0060.00316.43
7.0.70.0030.00616.53
7.0.60.0050.00216.23
7.0.50.0050.00516.41
7.0.40.0040.00415.95
7.0.30.0050.00315.95
7.0.20.0000.00715.95
7.0.10.0000.00815.95
7.0.00.0030.00515.95

preferences:
70.84 ms | 401 KiB | 5 Q