3v4l.org

run code in 300+ PHP versions simultaneously
<?php class User { public $name = "admin"; } class UserCouple implements Serializable { public $user1; public $user2; public function serialize() { return serialize(array(42, serialize(array($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)
8.3.60.0060.00916.50
8.3.50.0100.01018.07
8.3.40.0080.00818.80
8.3.30.0140.00018.75
8.3.20.0040.00421.73
8.3.10.0080.00022.06
8.3.00.0080.00020.77
8.2.180.0090.00918.41
8.2.170.0000.01822.96
8.2.160.0140.00020.46
8.2.150.0030.00525.66
8.2.140.0050.00324.66
8.2.130.0080.00026.16
8.2.120.0080.00021.00
8.2.110.0090.00022.20
8.2.100.0090.00317.84
8.2.90.0050.00318.09
8.2.80.0040.00419.15
8.2.70.0000.00818.16
8.2.60.0000.00818.16
8.2.50.0050.00318.10
8.2.40.0040.00420.46
8.2.30.0040.00421.20
8.2.20.0040.00418.02
8.2.10.0040.00418.19
8.2.00.0070.00018.20
8.1.280.0100.01025.92
8.1.270.0080.00024.66
8.1.260.0000.00826.35
8.1.250.0030.00528.09
8.1.240.0060.00322.01
8.1.230.0070.00420.92
8.1.220.0050.00317.77
8.1.210.0000.00918.77
8.1.200.0030.00617.35
8.1.190.0040.00417.22
8.1.180.0060.00318.10
8.1.170.0000.00918.73
8.1.160.0040.00418.97
8.1.150.0050.00220.27
8.1.140.0000.00719.64
8.1.130.0070.00018.99
8.1.120.0000.00717.47
8.1.110.0070.00017.46
8.1.100.0000.00817.45
8.1.90.0020.00517.51
8.1.80.0000.00817.45
8.1.70.0030.00317.50
8.1.60.0050.00317.52
8.1.50.0030.00617.50
8.1.40.0040.00417.59
8.1.30.0000.00817.71
8.1.20.0060.00317.61
8.1.10.0050.00317.60
8.1.00.0060.00317.54
8.0.300.0040.00420.00
8.0.290.0000.00816.75
8.0.280.0000.00718.46
8.0.270.0000.00717.26
8.0.260.0030.00317.27
8.0.250.0030.00316.99
8.0.240.0000.00717.04
8.0.230.0070.00017.07
8.0.220.0000.00716.86
8.0.210.0000.00716.84
8.0.200.0040.00417.00
8.0.190.0080.00017.03
8.0.180.0070.00016.88
8.0.170.0080.00317.00
8.0.160.0030.00317.02
8.0.150.0050.00316.89
8.0.140.0050.00316.93
8.0.130.0030.00313.40
8.0.120.0060.00316.86
8.0.110.0050.00316.88
8.0.100.0000.00717.00
8.0.90.0080.00016.99
8.0.80.0090.00616.95
8.0.70.0000.00717.04
8.0.60.0070.00016.88
8.0.50.0030.00616.89
8.0.30.0080.01017.07
8.0.20.0090.01217.42
8.0.10.0050.00516.98
8.0.00.0070.01317.11
7.4.330.0030.00315.55
7.4.320.0030.00316.62
7.4.300.0030.00316.52
7.4.290.0040.00516.51
7.4.280.0000.00816.41
7.4.270.0000.00716.54
7.4.260.0070.00016.50
7.4.250.0030.00316.55
7.4.240.0040.00416.61
7.4.230.0080.00016.55
7.4.220.0150.00616.65
7.4.210.0070.00816.56
7.4.200.0050.00316.69
7.4.160.0100.00716.66
7.4.150.0120.01217.40
7.4.140.0120.00617.86
7.4.130.0090.01416.56
7.4.120.0090.00916.54
7.4.110.0070.01716.55
7.4.100.0090.00916.73
7.4.90.0040.01616.61
7.4.80.0110.00719.39
7.4.70.0070.01116.65
7.4.60.0120.00316.40
7.4.50.0090.00416.57
7.4.40.0130.01016.38
7.4.30.0130.00316.54
7.4.10.0110.00714.93
7.4.00.0050.00915.00
7.3.330.0000.00613.41
7.3.320.0000.00613.48
7.3.310.0040.00416.32
7.3.300.0070.00016.45
7.3.290.0030.00316.46
7.3.280.0070.01016.42
7.3.270.0120.00517.40
7.3.260.0110.00716.42
7.3.250.0070.01016.55
7.3.240.0080.01016.41
7.3.230.0070.01416.46
7.3.210.0120.00616.35
7.3.200.0070.01116.38
7.3.190.0100.01016.43
7.3.180.0100.00616.48
7.3.170.0040.01216.50
7.3.160.0040.01216.62
7.3.130.0040.01214.68
7.3.120.0070.01314.66
7.3.110.0100.01014.93
7.3.100.0130.00014.86
7.3.90.0070.01014.63
7.3.80.0080.00414.59
7.3.70.0000.00914.96
7.3.60.0110.00414.93
7.3.50.0080.00614.70
7.3.40.0040.00914.94
7.3.30.0050.00614.73
7.3.20.0090.00615.62
7.3.10.0060.01015.59
7.3.00.0070.00815.81
7.2.330.0150.00316.89
7.2.320.0030.01316.45
7.2.310.0150.00416.85
7.2.300.0150.00716.70
7.2.290.0100.00616.88
7.2.260.0130.00715.03
7.2.250.0110.00715.05
7.2.240.0040.01414.95
7.2.230.0040.01115.29
7.2.220.0030.00715.15
7.2.210.0050.00515.13
7.2.200.0070.01015.03
7.2.190.0070.00715.02
7.2.180.0090.01114.97
7.2.170.0050.00815.07
7.2.160.0070.00715.18
7.2.150.0080.00916.00
7.2.140.0100.00515.74
7.2.130.0050.00915.96
7.2.120.0160.00215.97
7.2.110.0090.00615.95
7.2.100.0090.01116.00
7.2.90.0080.01115.87
7.2.80.0060.00816.04
7.2.70.0070.00716.01
7.2.60.0090.00816.27
7.2.50.0100.00716.03
7.2.40.0120.00816.80
7.2.30.0150.00716.69
7.2.20.0150.00816.70
7.2.10.0180.00516.61
7.2.00.0120.00816.60
7.1.330.0070.00715.90
7.1.320.0100.00315.55
7.1.310.0000.00815.96
7.1.300.0040.00715.55
7.1.290.0030.01215.70
7.1.280.0060.00614.61
7.1.270.0070.00514.64
7.1.260.0090.00414.77
7.1.250.0060.00714.88
7.1.240.0060.00914.68
7.1.230.0080.01214.84
7.1.220.0080.00714.63
7.1.210.0080.00614.74
7.1.200.0090.00914.88
7.1.190.0540.00914.76
7.1.180.0130.01014.55
7.1.170.0100.01014.59
7.1.160.0090.01515.45
7.1.150.0120.00915.32
7.1.140.0160.00615.46
7.1.130.0140.00815.27
7.1.120.0120.00615.22
7.1.110.0130.00815.23
7.1.100.0110.00714.91
7.1.90.0920.00615.24
7.1.80.0200.00915.17
7.1.70.0080.01015.41
7.1.60.0150.00619.96
7.1.50.0300.01019.90
7.1.40.0180.00919.55
7.1.30.0160.00719.53
7.1.20.0190.00719.72
7.1.10.0120.00515.23
7.1.00.0150.00615.23
7.0.330.0120.00813.11
7.0.320.0150.00813.57
7.0.310.0190.01013.32
7.0.300.0100.01213.41
7.0.290.0220.00715.04
7.0.280.0180.01813.51
7.0.270.0260.00914.94
7.0.260.0230.00914.94
7.0.250.0290.00514.63
7.0.240.0210.01014.51
7.0.230.0220.01214.73
7.0.220.0290.01014.66
7.0.210.0230.00814.14
7.0.200.0130.01015.16
7.0.190.0150.00814.92
7.0.180.0150.00714.64
7.0.170.0120.00614.87
7.0.160.0210.00714.73
7.0.150.0180.00814.70
7.0.140.0150.00714.75
7.0.130.0150.00614.93
7.0.120.0170.00615.05
7.0.110.0150.00914.77
7.0.100.0160.00614.84
7.0.90.0160.00714.74
7.0.80.0170.00814.87
7.0.70.0110.01214.73
7.0.60.0130.00814.58
7.0.50.0120.00914.74
7.0.40.0560.00614.37
7.0.30.0160.00714.35
7.0.20.0170.01214.40
7.0.10.0160.01014.29
7.0.00.0170.00914.40
5.6.400.0140.00314.20
5.6.390.0170.01114.34
5.6.380.0070.01013.96

preferences:
64.13 ms | 401 KiB | 5 Q