3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo { private $bar = true; public function __construct() { $this->bar = false; unset($this->bar); } } $foo = new Foo(); var_dump(serialize($foo), unserialize(serialize($foo)));

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)
8.3.60.0210.00016.63
8.3.50.0120.00522.83
8.3.40.0100.00618.67
8.3.30.0100.00319.09
8.3.20.0050.00220.34
8.3.10.0080.00023.71
8.3.00.0090.00019.25
8.2.180.0110.00416.38
8.2.170.0090.00622.96
8.2.160.0100.00720.49
8.2.150.0000.00824.18
8.2.140.0030.00624.66
8.2.130.0080.00026.16
8.2.120.0060.00320.95
8.2.110.0100.00019.30
8.2.100.0090.00317.59
8.2.90.0000.00819.05
8.2.80.0050.00317.97
8.2.70.0030.00617.38
8.2.60.0040.00417.92
8.2.50.0030.00518.07
8.2.40.0080.00019.88
8.2.30.0030.00617.89
8.2.20.0030.00617.73
8.2.10.0050.00217.98
8.2.00.0000.00817.63
8.1.280.0150.00625.92
8.1.270.0100.00023.96
8.1.260.0060.00326.35
8.1.250.0050.00228.09
8.1.240.0040.00422.10
8.1.230.0080.00318.87
8.1.220.0040.00417.74
8.1.210.0080.00018.77
8.1.200.0100.00017.35
8.1.190.0000.00817.22
8.1.180.0030.00618.10
8.1.170.0080.00018.40
8.1.160.0070.00022.02
8.1.150.0050.00218.87
8.1.140.0030.00517.43
8.1.130.0000.00717.67
8.1.120.0040.00417.28
8.1.110.0080.00017.29
8.1.100.0050.00317.44
8.1.90.0000.00717.47
8.1.80.0030.00317.25
8.1.70.0040.00417.42
8.1.60.0030.00617.57
8.1.50.0080.00017.55
8.1.40.0040.00417.54
8.1.30.0030.00517.63
8.1.20.0000.00917.64
8.1.10.0000.00717.44
8.1.00.0000.00717.41
8.0.300.0050.00220.09
8.0.290.0060.00616.63
8.0.280.0000.00718.39
8.0.270.0030.00517.20
8.0.260.0030.00317.19
8.0.250.0030.00316.86
8.0.240.0070.00016.95
8.0.230.0030.00316.86
8.0.220.0030.00316.86
8.0.210.0040.00416.91
8.0.200.0030.00317.00
8.0.190.0090.00016.97
8.0.180.0040.00416.91
8.0.170.0040.00416.98
8.0.160.0000.00716.91
8.0.150.0030.00316.77
8.0.140.0000.00716.74
8.0.130.0060.00013.25
8.0.120.0040.00416.82
8.0.110.0050.00216.93
8.0.100.0050.00216.89
8.0.90.0000.00716.68
8.0.80.0120.00916.93
8.0.70.0040.00416.84
8.0.60.0080.00016.78
8.0.50.0040.00416.93
8.0.30.0150.00516.92
8.0.20.0130.01217.40
8.0.10.0050.00216.87
8.0.00.0130.00716.75
7.4.330.0000.00615.00
7.4.320.0030.00316.44
7.4.300.0030.00316.55
7.4.290.0040.00416.51
7.4.280.0060.00316.64
7.4.270.0030.00316.62
7.4.260.0030.00316.56
7.4.250.0030.00516.43
7.4.240.0070.00016.53
7.4.230.0030.00316.71
7.4.220.0030.01416.62
7.4.210.0070.00716.60
7.4.200.0030.00516.44
7.4.160.0050.01016.33
7.4.150.0190.00017.40
7.4.140.0160.00517.86
7.4.130.0090.00616.51
7.4.120.0080.01116.37
7.4.110.0100.00716.49
7.4.100.0060.01216.54
7.4.90.0070.01016.50
7.4.80.0050.01119.39
7.4.70.0070.01016.48
7.4.60.0090.01316.55
7.4.50.0000.00816.63
7.4.40.0060.01116.45
7.4.30.0130.00316.34
7.4.00.0080.00914.94
7.3.330.0000.00513.33
7.3.320.0000.00513.31
7.3.310.0000.00816.21
7.3.300.0000.00616.18
7.3.290.0100.00616.30
7.3.280.0110.01016.30
7.3.270.0060.01217.40
7.3.260.0150.00916.44
7.3.250.0130.00816.47
7.3.240.0090.00916.59
7.3.230.0120.00616.47
7.3.210.0050.01216.45
7.3.200.0160.00019.39
7.3.190.0090.00816.34
7.3.180.0160.00016.48
7.3.170.0090.00616.27
7.3.160.0130.00316.45
7.3.120.0070.01214.79
7.3.110.0100.00814.83
7.3.100.0050.01014.83
7.3.90.0070.01014.80
7.3.80.0090.00514.81
7.3.70.0050.00814.76
7.3.60.0060.00714.86
7.3.50.0090.00614.70
7.3.40.0100.00514.83
7.3.30.0070.00714.67
7.3.20.0080.00516.69
7.3.10.0090.00516.53
7.3.00.0050.00816.49
7.2.330.0040.01316.73
7.2.320.0110.00516.52
7.2.310.0130.00416.69
7.2.300.0090.00916.53
7.2.290.0070.01016.55
7.2.250.0070.01214.88
7.2.240.0100.00915.17
7.2.230.0080.01014.77
7.2.220.0050.01115.24
7.2.210.0060.00515.22
7.2.200.0050.00715.18
7.2.190.0040.01114.92
7.2.180.0050.00914.96
7.2.170.0040.00815.12
7.2.00.0160.02119.25
7.1.330.0090.00615.60
7.1.320.0040.00715.68
7.1.310.0140.00215.72
7.1.300.0030.00915.73
7.1.290.0050.00615.65
7.1.280.0060.00915.72
7.1.270.0050.00915.73
7.1.260.0080.00415.97
7.1.100.0030.01318.23
7.1.70.0000.00717.29
7.1.60.0060.01819.46
7.1.50.0000.02116.93
7.1.00.0000.08022.30
7.0.200.0030.00716.73
7.0.140.0030.07321.90
7.0.60.0000.08319.97
7.0.50.0070.04017.86
7.0.40.0130.05020.02
7.0.30.0200.05020.13
7.0.20.0270.08020.07
7.0.10.0130.06020.15
7.0.00.0130.06720.10
5.6.280.0030.07321.02
5.6.210.0030.04020.70
5.6.200.0100.08018.21
5.6.190.0070.04320.68
5.6.180.0300.06020.45
5.6.170.0400.07320.39
5.6.160.0170.07320.46
5.6.150.0030.04318.19
5.6.140.0130.05318.14
5.6.130.0030.08718.16
5.6.120.0100.03720.95
5.6.110.0000.04720.99
5.6.100.0130.08321.01
5.6.90.0000.04321.12
5.6.80.0070.04020.51
5.6.70.4270.04720.42
5.5.350.0200.03720.36
5.5.340.0100.04017.95
5.5.330.0070.04020.40
5.5.320.0270.05320.27
5.5.310.0270.08020.34
5.5.300.0070.04717.94
5.5.290.0000.05017.95
5.5.280.0030.05320.77
5.5.270.0100.03320.73
5.5.260.0000.08320.73
5.5.250.0170.07020.65
5.5.240.0370.06020.12
5.4.450.0100.04719.42
5.4.440.0030.06319.52
5.4.430.0130.04019.30
5.4.420.0130.05319.16
5.4.410.0070.03319.42
5.4.400.0100.03319.00
5.4.390.0130.03319.25
5.4.380.0130.06318.72
5.4.370.0270.06018.77
5.4.360.0370.05318.52
5.4.350.0400.07718.46
5.4.340.0330.04718.50
5.4.320.0060.03612.50
5.4.310.0040.04012.50
5.4.300.0070.03512.50
5.4.290.0030.04012.50
5.4.280.0050.03512.39
5.4.270.0060.04412.39
5.4.260.0090.03512.39
5.4.250.0060.03712.39
5.4.240.0050.03812.39
5.4.230.0070.03712.39
5.4.220.0050.03712.39
5.4.210.0040.03712.39
5.4.200.0080.03712.39
5.4.190.0060.03612.38
5.4.180.0080.03412.38
5.4.170.0060.03512.39
5.4.160.0040.03812.39
5.4.150.0030.03812.38
5.4.140.0060.04612.07
5.4.130.0080.04712.06
5.4.120.0050.04712.02
5.4.110.0060.03512.01
5.4.100.0100.03512.02
5.4.90.0050.04312.01
5.4.80.0060.03712.02
5.4.70.0060.03412.01
5.4.60.0070.03312.01
5.4.50.0050.03512.01
5.4.40.0060.03412.00
5.4.30.0070.03711.99
5.4.20.0070.03411.99
5.4.10.0060.03411.99
5.4.00.0050.03811.48
5.3.290.0050.04212.80
5.3.280.0030.04112.71
5.3.270.0080.03712.73
5.3.260.0070.03812.71
5.3.250.0040.03812.72
5.3.240.0070.03612.72
5.3.230.0060.03812.71
5.3.220.0060.03912.68
5.3.210.0050.04012.68
5.3.200.0060.03712.68
5.3.190.0050.03812.68
5.3.180.0030.03912.67
5.3.170.0080.03512.67
5.3.160.0050.03712.67
5.3.150.0100.03312.68
5.3.140.0060.03612.66
5.3.130.0050.04012.66
5.3.120.0070.03812.66
5.3.110.0090.03612.66
5.3.100.0100.03312.11
5.3.90.0040.03912.10
5.3.80.0080.03512.09
5.3.70.0040.04412.09
5.3.60.0040.04012.08
5.3.50.0040.03812.03
5.3.40.0060.03512.03
5.3.30.0080.03211.98
5.3.20.0070.03711.77
5.3.10.0060.03511.73
5.3.00.0090.03311.72
5.2.170.0060.0299.22
5.2.160.0020.0409.23
5.2.150.0070.0309.22
5.2.140.0020.0349.22
5.2.130.0020.0379.18
5.2.120.0050.0429.18
5.2.110.0070.0289.18
5.2.100.0030.0319.18
5.2.90.0070.0349.18
5.2.80.0050.0419.18
5.2.70.0030.0319.18
5.2.60.0040.0309.13
5.2.50.0040.0309.09
5.2.40.0040.0289.07
5.2.30.0040.0299.05
5.2.20.0060.0279.03
5.2.10.0040.0298.95
5.2.00.0060.0278.81
5.1.60.0050.0238.09
5.1.50.0020.0268.08
5.1.40.0050.0248.07
5.1.30.0040.0278.41
5.1.20.0060.0258.45
5.1.10.0050.0268.16
5.1.00.0060.0238.16
5.0.50.0030.0216.64
5.0.40.0050.0176.50
5.0.30.0040.0306.32
5.0.20.0040.0196.28
5.0.10.0050.0176.25
5.0.00.0030.0306.25
4.4.90.0020.0164.78
4.4.80.0030.0154.76
4.4.70.0030.0144.76
4.4.60.0050.0144.75
4.4.50.0040.0144.77
4.4.40.0030.0254.71
4.4.30.0010.0174.76
4.4.20.0040.0154.85
4.4.10.0030.0154.85
4.4.00.0030.0244.76
4.3.110.0030.0164.67
4.3.100.0030.0144.66
4.3.90.0060.0114.63
4.3.80.0050.0214.58
4.3.70.0010.0174.63
4.3.60.0020.0154.63
4.3.50.0060.0114.63
4.3.40.0020.0244.54
4.3.30.0020.0173.30
4.3.20.0030.0173.28
4.3.10.0000.0183.23
4.3.00.0000.01714.87

preferences:
66.33 ms | 401 KiB | 5 Q