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run code in 300+ PHP versions simultaneously
<?php namespace RN\Pitt { class Amt {} } namespace { $obj = new RN\Pitt\Amt; var_dump($obj); $sub = 'Pitt'; $class = 'Amt'; $name = "\\RN\\$sub\\$class"; var_dump($name); $obj = new $class; var_dump($obj); }

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)
8.3.60.0100.01018.55
8.3.50.0120.00721.91
8.3.40.0090.00918.84
8.3.30.0140.00019.22
8.3.20.0020.00520.29
8.3.10.0050.00321.86
8.3.00.0000.00817.80
8.2.180.0080.00818.19
8.2.170.0100.01022.96
8.2.160.0090.00620.34
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0120.00026.16
8.2.120.0000.00821.03
8.2.110.0040.00422.24
8.2.100.0090.00319.89
8.2.90.0040.00419.17
8.2.80.0000.00817.97
8.2.70.0060.00317.63
8.2.60.0040.00417.93
8.2.50.0040.00418.07
8.2.40.0040.00419.88
8.2.30.0080.00318.04
8.2.20.0000.00817.62
8.2.10.0040.00418.12
8.2.00.0020.00517.68
8.1.280.0100.00725.92
8.1.270.0060.00323.79
8.1.260.0050.00226.35
8.1.250.0040.00428.09
8.1.240.0030.00621.94
8.1.230.0080.00319.01
8.1.220.0000.00917.74
8.1.210.0000.00818.77
8.1.200.0060.00317.23
8.1.190.0080.00017.23
8.1.180.0050.00318.10
8.1.170.0050.00318.54
8.1.160.0040.00421.94
8.1.150.0040.00418.79
8.1.140.0000.00717.43
8.1.130.0000.00717.79
8.1.120.0020.00517.46
8.1.110.0000.00817.37
8.1.100.0000.00717.45
8.1.90.0050.00217.36
8.1.80.0030.00317.45
8.1.70.0030.00317.30
8.1.60.0000.00717.58
8.1.50.0000.00917.54
8.1.40.0030.00617.43
8.1.30.0040.00417.63
8.1.20.0000.00717.55
8.1.10.0080.00017.48
8.1.00.0040.00417.36
8.0.300.0050.00218.77
8.0.290.0070.00016.59
8.0.280.0000.00718.50
8.0.270.0000.00717.31
8.0.260.0000.00817.16
8.0.250.0000.00716.99
8.0.240.0070.00017.03
8.0.230.0000.00716.95
8.0.220.0030.00316.82
8.0.210.0000.00716.85
8.0.200.0000.01017.04
8.0.190.0000.00717.00
8.0.180.0070.00016.97
8.0.170.0020.00516.84
8.0.160.0050.00316.95
8.0.150.0070.00016.95
8.0.140.0070.00016.96
8.0.130.0000.00513.32
8.0.120.0080.00016.94
8.0.110.0050.00316.84
8.0.100.0020.00517.01
8.0.90.0050.00216.83
8.0.80.0060.00917.02
8.0.70.0040.00416.98
8.0.60.0040.00417.06
8.0.50.0000.00716.84
8.0.30.0080.01317.01
8.0.20.0110.01117.40
8.0.10.0040.00417.06
8.0.00.0060.01216.84
7.4.330.0000.00515.07
7.4.320.0050.00216.45
7.4.300.0000.01016.61
7.4.290.0040.00416.51
7.4.280.0060.00316.38
7.4.270.0080.00016.48
7.4.260.0000.01016.46
7.4.250.0040.00416.55
7.4.240.0020.00516.48
7.4.230.0000.00716.67
7.4.220.0090.00916.54
7.4.210.0060.00916.58
7.4.200.0070.00016.67
7.4.160.0110.00516.68
7.4.150.0060.01317.40
7.4.140.0070.01017.86
7.4.130.0110.00716.57
7.4.120.0070.01016.65
7.4.110.0100.00716.56
7.4.100.0190.00616.48
7.4.90.0090.00916.58
7.4.80.0030.01319.39
7.4.70.0070.01016.45
7.4.60.0070.01116.57
7.4.50.0000.00416.53
7.4.40.0100.01016.47
7.4.30.0100.00916.65
7.4.00.0030.01214.83
7.3.330.0000.00813.38
7.3.320.0030.00313.31
7.3.310.0070.00016.36
7.3.300.0030.00316.37
7.3.290.0040.01416.30
7.3.280.0120.00716.38
7.3.270.0080.00817.40
7.3.260.0130.00316.59
7.3.250.0100.00716.48
7.3.240.0120.00616.43
7.3.230.0120.01216.66
7.3.210.0030.01516.58
7.3.200.0030.01319.39
7.3.190.0100.01316.50
7.3.180.0060.01116.30
7.3.170.0110.00616.32
7.3.160.0100.01016.29
7.3.120.0090.00615.02
7.2.330.0120.01216.33
7.2.320.0120.00616.78
7.2.310.0090.00916.54
7.2.300.0130.00316.73
7.2.290.0080.01516.62
7.2.60.0070.01016.70
7.2.50.0000.01316.86
7.2.00.0030.01219.48
7.1.200.0090.00315.70
7.1.70.0040.00417.26
7.1.60.0070.01419.25
7.1.50.0040.01817.01
7.1.00.0070.07322.51
7.0.200.0070.01016.78
7.0.140.0030.07322.15
7.0.60.0070.08319.96
7.0.50.0170.07317.73
7.0.40.0070.08720.20
7.0.30.0330.07020.30
7.0.20.0230.04320.09
7.0.10.0030.04320.16
7.0.00.0070.04720.22
5.6.280.0030.07321.04
5.6.210.0000.04720.44
5.6.200.0100.06318.14
5.6.190.0130.08020.43
5.6.180.0270.05720.63
5.6.170.0130.04320.44
5.6.160.0030.09020.48
5.6.150.0100.03318.15
5.6.140.0170.04018.13
5.6.130.0030.08318.21
5.6.120.0070.05020.98
5.6.110.0100.08721.02
5.6.100.0170.06721.00
5.6.90.0070.07721.02
5.6.80.0130.05320.40
5.5.350.4030.04320.47
5.5.340.0030.05717.95
5.5.330.0070.05320.21
5.5.320.0100.05020.38
5.5.310.0400.08020.32
5.5.300.0070.04017.91
5.5.290.0030.06017.91
5.5.280.0070.03720.87
5.5.270.0030.08020.67
5.5.260.0100.07720.89
5.5.250.0100.07720.58
5.5.240.0070.08020.25
5.4.450.0230.05019.59
5.4.440.0100.04719.38
5.4.430.0100.04719.38
5.4.420.0270.04719.32
5.4.410.0400.05019.21
5.4.400.0630.02719.24
5.4.390.0170.03318.95
5.4.380.0030.06718.51
5.4.370.0030.06318.68
5.4.360.0170.05018.75
5.4.350.0100.05718.60
5.4.340.0100.06318.55
5.4.320.0060.03512.50
5.4.310.0060.03712.49
5.4.300.0040.04512.50
5.4.290.0060.03812.49
5.4.280.0070.03412.39
5.4.270.0070.03512.39
5.4.260.0060.04112.39
5.4.250.0070.03712.39
5.4.240.0030.04012.39
5.4.230.0060.03912.38
5.4.220.0110.04012.38
5.4.210.0080.03712.38
5.4.200.0060.03912.38
5.4.190.0050.03812.38
5.4.180.0040.03812.38
5.4.170.0060.03612.39
5.4.160.0100.03212.39
5.4.150.0080.05112.39
5.4.140.0110.03512.07
5.4.130.0060.04012.05
5.4.120.0030.04412.01
5.4.110.0050.03612.01
5.4.100.0050.03912.01
5.4.90.0030.04012.01
5.4.80.0050.05512.01
5.4.70.0070.03412.00
5.4.60.0060.03712.01
5.4.50.0080.03512.00
5.4.40.0030.03911.99
5.4.30.0090.04811.99
5.4.20.0080.04011.98
5.4.10.0050.03711.98
5.4.00.0070.03411.48
5.3.290.0050.03912.80
5.3.280.0060.03712.71
5.3.270.0050.03912.72
5.3.260.0080.04512.72
5.3.250.0030.04612.71
5.3.240.0030.04512.72
5.3.230.0040.03912.70
5.3.220.0060.04212.68
5.3.210.0060.03912.68
5.3.200.0030.04012.68
5.3.190.0090.03712.67
5.3.180.0060.03912.67
5.3.170.0040.03812.67
5.3.160.0040.03912.68
5.3.150.0030.04412.67
5.3.140.0110.03712.66
5.3.130.0100.03712.66
5.3.120.0050.04012.66
5.3.110.0050.03912.65
5.3.100.0070.03712.12
5.3.90.0080.03612.09
5.3.80.0080.03812.09
5.3.70.0090.03612.09
5.3.60.0080.03712.07
5.3.50.0050.03812.02
5.3.40.0060.04412.02
5.3.30.0050.03811.98
5.3.20.0050.04111.76
5.3.10.0050.03711.73
5.3.00.0090.04211.72
5.2.170.0050.0309.18
5.2.160.0040.0299.18
5.2.150.0030.0319.18
5.2.140.0070.0279.18
5.2.130.0040.0299.14
5.2.120.0030.0299.14
5.2.110.0020.0319.15
5.2.100.0080.0259.14
5.2.90.0060.0279.14
5.2.80.0040.0319.14
5.2.70.0060.0309.14
5.2.60.0050.0349.09
5.2.50.0040.0319.06
5.2.40.0050.0289.03
5.2.30.0060.0289.01
5.2.20.0030.0299.00
5.2.10.0050.0288.92
5.2.00.0050.0298.78
5.1.60.0040.0258.07
5.1.50.0020.0278.06
5.1.40.0050.0248.05
5.1.30.0010.0338.40
5.1.20.0080.0278.41
5.1.10.0040.0338.14
5.1.00.0040.0258.14
5.0.50.0010.0246.62
5.0.40.0030.0196.47
5.0.30.0060.0296.29
5.0.20.0050.0236.27
5.0.10.0060.0236.24
5.0.00.0040.0316.24
4.4.90.0030.0164.78
4.4.80.0030.0154.75
4.4.70.0030.0154.76
4.4.60.0040.0154.75
4.4.50.0020.0164.77
4.4.40.0050.0234.71
4.4.30.0040.0214.76
4.4.20.0030.0194.84
4.4.10.0020.0224.85
4.4.00.0040.0264.76
4.3.110.0000.0204.67
4.3.100.0040.0144.66
4.3.90.0020.0194.64
4.3.80.0030.0244.59
4.3.70.0030.0144.63
4.3.60.0030.0214.63
4.3.50.0020.0244.63
4.3.40.0040.0244.54
4.3.30.0000.0223.28
4.3.20.0000.0183.26
4.3.10.0020.0223.22
4.3.00.0000.01315.27

preferences:
49.46 ms | 401 KiB | 5 Q