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run code in 300+ PHP versions simultaneously
<?php namespace Foo\Test { class Bar {} } namespace { $serialized = 'O:7:"Foo\Bar":0:{}'; class_alias('Foo\Test\Bar', 'Foo\Bar'); var_dump(unserialize($serialized)); }

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)
8.3.60.0140.00716.25
8.3.50.0080.01021.91
8.3.40.0060.01518.71
8.3.30.0100.01018.97
8.3.20.0040.00420.34
8.3.10.0040.00421.96
8.3.00.0060.00319.25
8.2.180.0140.00718.13
8.2.170.0070.00722.96
8.2.160.0100.00722.20
8.2.150.0000.00824.18
8.2.140.0040.00424.66
8.2.130.0100.00326.16
8.2.120.0040.00419.54
8.2.110.0070.00319.32
8.2.100.0030.00917.50
8.2.90.0000.00819.09
8.2.80.0000.00817.97
8.2.70.0050.00317.38
8.2.60.0060.00317.91
8.2.50.0060.00318.07
8.2.40.0080.00018.16
8.2.30.0000.00817.97
8.2.20.0050.00317.62
8.2.10.0040.00417.88
8.2.00.0030.00617.59
8.1.280.0100.01025.92
8.1.270.0000.00920.65
8.1.260.0070.00026.35
8.1.250.0060.00328.09
8.1.240.0000.00923.83
8.1.230.0040.00817.42
8.1.220.0050.00317.74
8.1.210.0000.00818.77
8.1.200.0030.00617.22
8.1.190.0060.00317.10
8.1.180.0080.00018.10
8.1.170.0000.00820.29
8.1.160.0000.00821.98
8.1.150.0040.00418.82
8.1.140.0040.00417.27
8.1.130.0030.00317.71
8.1.120.0050.00517.29
8.1.110.0030.00417.42
8.1.100.0000.00817.43
8.1.90.0000.00717.36
8.1.80.0070.00017.37
8.1.70.0030.00317.26
8.1.60.0060.00317.55
8.1.50.0000.00817.32
8.1.40.0000.00817.46
8.1.30.0080.00017.54
8.1.20.0020.00517.57
8.1.10.0030.00517.46
8.1.00.0040.00417.42
8.0.300.0060.00318.77
8.0.290.0030.00616.88
8.0.280.0030.00318.33
8.0.270.0030.00317.06
8.0.260.0080.00017.20
8.0.250.0030.00316.92
8.0.240.0000.00716.92
8.0.230.0050.00316.90
8.0.220.0030.00316.88
8.0.210.0070.00016.75
8.0.200.0000.00616.83
8.0.190.0040.00416.95
8.0.180.0000.00716.94
8.0.170.0000.00816.79
8.0.160.0000.00716.84
8.0.150.0030.00316.80
8.0.140.0030.00516.88
8.0.130.0030.00313.29
8.0.120.0080.00016.73
8.0.110.0000.00716.84
8.0.100.0000.00716.87
8.0.90.0070.00016.84
8.0.80.0060.01316.79
8.0.70.0040.00416.79
8.0.60.0000.00716.84
8.0.50.0040.00416.75
8.0.30.0060.01817.09
8.0.20.0120.00617.40
8.0.10.0060.00316.85
8.0.00.0050.01316.81
7.4.330.0030.00315.04
7.4.320.0030.00316.52
7.4.300.0040.00416.52
7.4.290.0040.00416.52
7.4.280.0000.00816.41
7.4.270.0040.00416.58
7.4.260.0050.00013.16
7.4.250.0070.00016.44
7.4.240.0050.00316.41
7.4.230.0030.00316.25
7.4.220.0070.01716.39
7.4.210.0100.00816.39
7.4.200.0000.00816.28
7.4.160.0090.00616.48
7.4.150.0070.01117.40
7.4.140.0110.00617.86
7.4.130.0050.01216.50
7.4.120.0080.00816.30
7.4.110.0200.00316.44
7.4.100.0150.00616.39
7.4.90.0100.00616.50
7.4.80.0120.00419.39
7.4.70.0030.01416.58
7.4.60.0030.01216.45
7.4.50.0030.00316.36
7.4.40.0160.00016.57
7.4.30.0030.01716.53
7.4.00.0030.01314.86
7.3.330.0030.00313.04
7.3.320.0060.00613.17
7.3.310.0040.00416.07
7.3.300.0040.00416.13
7.3.290.0000.00716.18
7.3.280.0070.01016.18
7.3.270.0090.00917.40
7.3.260.0130.00416.59
7.3.250.0130.00616.28
7.3.240.0090.00916.23
7.3.230.0130.00416.39
7.3.210.0060.00916.43
7.3.200.0120.00619.39
7.3.190.0090.00616.33
7.3.180.0090.00616.17
7.3.170.0110.01416.53
7.3.160.0100.00516.35
7.2.330.0090.01216.58
7.2.320.0150.00616.57
7.2.310.0000.01616.61
7.2.300.0070.01016.39
7.2.290.0070.01416.59
7.2.60.0090.00616.89
7.2.00.0030.01018.70
7.1.200.0030.01015.61
7.1.100.0000.01117.88
7.1.70.0000.00717.22
7.1.60.0100.01419.50
7.1.50.0100.00716.55
7.1.00.0030.07722.46
7.0.200.0430.00414.50
7.0.140.0000.07722.09
7.0.60.0100.08319.91
7.0.50.0070.08317.87
7.0.40.0170.07720.23
7.0.30.0200.04720.23
7.0.20.0300.09020.05
7.0.10.0230.06020.15
7.0.00.0070.07320.25
5.6.280.0100.06721.02
5.6.210.0030.05020.46
5.6.200.0030.04018.25
5.6.190.0000.05720.41
5.6.180.0170.04320.45
5.6.170.0300.05020.57
5.6.160.0100.05720.43
5.6.150.0030.06718.19
5.6.140.0100.04718.20
5.6.130.0000.04318.18
5.6.120.0070.06320.99
5.6.110.0070.03720.91
5.6.100.0070.07721.01
5.6.90.0030.05020.96
5.6.80.0070.08020.33
5.6.70.0130.06720.34
5.5.350.0100.03720.49
5.5.340.0000.04017.98
5.5.330.0100.05720.25
5.5.320.0130.08020.41
5.5.310.0230.08020.41
5.5.300.0100.03317.98
5.5.290.0070.04018.07
5.5.280.0130.07720.73
5.5.270.0030.05720.86
5.5.260.0170.07720.77
5.5.250.0100.08020.60
5.5.240.0100.07320.15
5.4.450.0600.07019.35
5.4.440.0730.05319.62
5.4.430.1130.04719.61
5.4.420.0230.05319.31
5.4.410.0930.06019.33
5.4.400.0330.04718.51
5.4.390.0330.06318.75
5.4.380.0430.05318.73
5.4.370.0300.05018.84
5.4.360.0370.05718.55
5.4.350.0570.04318.55
5.4.340.0430.07718.71
5.4.320.0330.05318.49
5.4.310.0230.05318.75
5.4.300.0400.05018.46
5.4.290.0370.05718.54
5.4.280.0370.05718.73
5.4.270.0470.04018.77
5.4.260.0370.05718.58
5.4.250.0400.06018.55
5.4.240.0470.06718.84
5.4.230.0400.07718.73
5.4.220.0330.07718.74
5.4.210.0400.06018.54
5.4.200.0430.04316.66
5.4.190.0400.06318.72
5.4.180.0330.05318.82
5.4.170.0200.06018.53
5.4.160.0430.05018.69
5.4.150.0400.07318.68
5.4.140.0330.05316.29
5.4.130.0300.05316.44
5.4.120.0230.06016.21
5.4.110.0300.05016.44
5.4.100.0330.04716.28
5.4.90.0400.05016.23
5.4.80.0230.05716.41
5.4.70.0300.05016.19
5.4.60.0270.05316.40
5.4.50.0300.06016.29
5.4.40.0170.06016.30
5.4.30.0230.06016.29
5.4.20.0270.05316.25
5.4.10.0370.05016.20
5.4.00.0370.04715.64
5.3.290.0330.08714.66
5.3.280.0330.05014.64
5.3.270.0200.06014.60
5.3.260.0230.05714.62
5.3.250.0270.05314.71
5.3.240.0270.05014.64
5.3.230.0330.04314.64
5.3.220.0200.05714.69
5.3.210.0170.06314.61
5.3.200.0300.05014.66
5.3.190.0300.05314.61
5.3.180.0370.05014.61
5.3.170.0170.05714.74
5.3.160.2370.05014.55
5.3.150.0100.05714.78
5.3.140.0170.05314.57
5.3.130.0400.07014.54
5.3.120.0500.06314.53
5.3.110.0430.07014.56
5.3.100.0230.05714.09
5.3.90.0370.05314.03
5.3.80.1170.05014.07
5.3.70.0300.04714.05
5.3.60.0230.05314.00
5.3.50.0270.05313.93
5.3.40.1030.06313.93
5.3.30.0200.05713.96
5.3.20.0430.04713.70
5.3.10.0270.04713.78
5.3.00.0270.05013.80
5.2.170.0230.03711.11
5.2.160.0170.06011.10
5.2.150.0270.06011.07
5.2.140.0400.04711.09
5.2.130.0230.04011.06
5.2.120.0400.02711.09
5.2.110.0270.04011.14
5.2.100.0270.04011.16
5.2.90.0270.04011.16
5.2.80.0200.04311.10
5.2.70.0300.03711.07
5.2.60.0230.03711.00
5.2.50.0300.04010.94
5.2.40.0230.04710.93
5.2.30.0130.04710.96
5.2.20.0270.03310.99
5.2.10.0230.03710.90
5.2.00.0300.03710.77
5.1.60.0200.0409.98
5.1.50.0100.04010.12
5.1.40.0130.0439.96
5.1.30.0300.03310.43
5.1.20.0130.04310.32
5.1.10.0170.05010.09
5.1.00.0130.04310.13
5.0.50.0230.0378.62
5.0.40.0130.0308.38
5.0.30.0200.0478.24
5.0.20.0130.0338.39
5.0.10.0070.0378.18
5.0.00.0170.0438.14
4.4.90.0170.0205.84
4.4.80.0100.0305.87
4.4.70.0130.0235.86
4.4.60.0130.0205.91
4.4.50.0100.0335.91
4.4.40.0130.0375.91
4.4.30.0170.0235.86
4.4.20.0170.0375.98
4.4.10.0200.0275.93
4.4.00.0070.0375.94
4.3.110.0170.0175.82
4.3.100.0100.0205.78
4.3.90.0170.0175.78
4.3.80.0130.0305.80
4.3.70.0100.0305.82
4.3.60.0030.0275.79
4.3.50.0070.0235.78
4.3.40.0030.0435.78
4.3.30.0030.0274.89
4.3.20.0030.0274.89
4.3.10.0030.0234.89
4.3.00.0130.0207.30

preferences:
45.65 ms | 401 KiB | 5 Q