3v4l.org

run code in 300+ PHP versions simultaneously
<?php interface Test { public function check(Test $x); } interface TestTest extends Test { public function check(Test $x); }; //this is ok: class Foo implements Test { public function check(Test $x) {} } //this is fail, but why? Bar implements Test, so.. logically it fulfills contract.. class Bar implements TestTest { public function check(Test $x) {} }

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)
8.3.40.0140.00618.75
8.3.30.0070.00720.20
8.3.20.0040.00418.61
8.3.10.0080.00020.97
8.3.00.0040.00419.54
8.2.170.0120.00322.96
8.2.160.0080.00820.36
8.2.150.0000.00824.18
8.2.140.0070.00024.66
8.2.130.0060.00326.16
8.2.120.0040.00419.70
8.2.110.0090.00319.25
8.2.100.0030.00917.72
8.2.90.0070.00019.05
8.2.80.0000.00719.38
8.2.70.0030.00517.63
8.2.60.0040.00417.80
8.2.50.0040.00418.07
8.2.40.0030.00519.66
8.2.30.0020.00521.23
8.2.20.0000.00717.59
8.2.10.0080.00017.62
8.2.00.0040.00417.53
8.1.270.0040.00423.99
8.1.260.0000.00826.35
8.1.250.0000.00728.09
8.1.240.0030.00622.39
8.1.230.0040.00720.92
8.1.220.0000.00918.77
8.1.210.0090.00018.77
8.1.200.0050.00517.22
8.1.190.0050.00217.39
8.1.180.0080.00018.10
8.1.170.0040.00418.64
8.1.160.0000.00718.82
8.1.150.0030.00618.68
8.1.140.0070.00017.34
8.1.130.0030.00517.68
8.1.120.0000.00917.40
8.1.110.0000.00717.38
8.1.100.0030.00617.40
8.1.90.0050.00217.43
8.1.80.0040.00417.39
8.1.70.0070.00017.26
8.1.60.0100.00017.42
8.1.50.0070.00017.35
8.1.40.0040.00417.39
8.1.30.0050.00317.54
8.1.20.0040.00417.59
8.1.10.0050.00217.43
8.1.00.0000.00717.33
8.0.300.0030.00519.90
8.0.290.0040.00417.18
8.0.280.0070.00018.38
8.0.270.0000.00717.05
8.0.260.0040.00416.81
8.0.250.0000.00716.79
8.0.240.0060.00616.91
8.0.230.0030.00316.79
8.0.220.0030.00316.82
8.0.210.0060.00316.87
8.0.200.0000.00616.84
8.0.190.0040.00416.76
8.0.180.0070.00016.86
8.0.170.0000.00716.77
8.0.160.0000.00816.83
8.0.150.0040.00416.80
8.0.140.0050.00216.68
8.0.130.0030.00313.25
8.0.120.0040.00416.79
8.0.110.0040.00416.68
8.0.100.0040.00416.72
8.0.90.0000.00716.93
8.0.80.0060.00916.85
8.0.70.0030.00516.86
8.0.60.0040.00416.83
8.0.50.0040.00416.88
8.0.30.0080.01117.10
8.0.20.0160.00717.40
8.0.10.0040.00417.04
8.0.00.0130.00416.67
7.4.330.0030.00316.84
7.4.320.0000.00616.43
7.4.300.0060.00016.46
7.4.290.0070.00016.54
7.4.280.0050.00316.44
7.4.270.0000.00716.43
7.4.260.0000.00513.23
7.4.250.0050.00316.54
7.4.240.0030.00316.37
7.4.230.0000.00716.24
7.4.220.0030.02016.25
7.4.210.0060.00916.47
7.4.200.0050.00216.18
7.4.190.0020.00516.71
7.4.160.0030.01316.49
7.4.150.0190.00617.40
7.4.140.0070.01017.86
7.4.130.0170.00516.33
7.4.120.0070.01516.43
7.4.110.0100.00716.59
7.4.100.0070.01116.49
7.4.90.0060.01316.63
7.4.80.0120.00619.39
7.4.70.0090.01016.56
7.4.60.0120.00416.21
7.4.50.0040.00416.10
7.4.40.0030.01022.77
7.4.30.0100.01016.46
7.4.00.0090.00915.05
7.3.330.0000.00513.03
7.3.320.0050.00213.12
7.3.310.0000.00716.07
7.3.300.0070.00016.08
7.3.290.0140.00616.18
7.3.280.0110.00816.15
7.3.270.0130.00617.40
7.3.260.0130.00918.24
7.3.250.0060.01116.17
7.3.240.0090.00916.45
7.3.230.0130.00316.48
7.3.210.0060.01016.45
7.3.200.0060.01519.39
7.3.190.0070.01016.39
7.3.180.0040.01216.29
7.3.170.0120.00316.52
7.3.160.0090.00616.38
7.3.120.0080.00614.70
7.2.330.0070.01016.34
7.2.320.0100.00716.26
7.2.310.0120.00916.48
7.2.300.0060.00916.43
7.2.290.0030.01316.32
7.2.00.0070.01119.18
7.1.100.0000.01417.61
7.1.70.0000.00716.60
7.1.60.0040.01819.24
7.1.50.0070.01716.73
7.1.00.0000.03722.51
7.0.200.0000.01016.82
7.0.140.0070.07022.11
7.0.100.0030.05020.00
7.0.90.0100.04320.00
7.0.80.0070.07719.84
7.0.70.0130.08019.93
7.0.60.0030.05020.02
7.0.50.0200.04320.28
7.0.40.0030.09020.12
7.0.30.0070.07020.09
7.0.20.0070.08320.11
7.0.10.0030.07720.08
7.0.00.0100.04320.04
5.6.280.0070.07021.07
5.6.250.0070.08020.76
5.6.240.0100.07720.59
5.6.230.0170.07320.51
5.6.220.0030.04320.71
5.6.210.0070.08320.56
5.6.200.0130.04021.10
5.6.190.0070.04020.96
5.6.180.0170.05321.17
5.6.170.0100.05321.04
5.6.160.0100.04721.05
5.6.150.0130.05721.02
5.6.140.0030.05021.03
5.6.130.0130.08021.06
5.6.120.0100.09020.94
5.6.110.0070.08321.15
5.6.100.0130.06320.93
5.6.90.0100.08021.04
5.6.80.0100.07320.30
5.6.70.0100.07720.30
5.6.60.0100.03320.46
5.6.50.0030.04720.42
5.6.40.0030.04320.46
5.6.30.0070.08320.36
5.6.20.0130.05720.28
5.6.10.0030.04020.39
5.6.00.0100.04020.42
5.5.380.0030.08720.49
5.5.370.0030.06020.57
5.5.360.0070.08720.54
5.5.350.0000.05320.45
5.5.340.0030.07320.72
5.5.330.0070.08320.63
5.5.320.0100.07720.80
5.5.310.0100.08020.77
5.5.300.0070.08320.86
5.5.290.0100.07020.89
5.5.280.0100.07720.82
5.5.270.0170.07720.85
5.5.260.0100.05020.88
5.5.250.0070.07720.73
5.5.240.0030.05020.27
5.5.230.0070.07020.24
5.5.220.0070.05720.24
5.5.210.0070.04020.14
5.5.200.0100.03320.15
5.5.190.0000.05020.25
5.5.180.0030.04719.95
5.5.160.0130.02720.25
5.5.150.0000.05320.20
5.5.140.0000.04320.10
5.5.130.0130.07320.20
5.5.120.0100.08020.28
5.5.110.0030.04320.14
5.5.100.0200.04720.10
5.5.90.0130.07020.06
5.5.80.0130.03720.14
5.5.70.0200.06719.96
5.5.60.0070.07019.93
5.5.50.0130.05720.13
5.5.40.0100.06020.11
5.5.30.0170.06319.93
5.5.20.0030.05020.02
5.5.10.0100.04320.04
5.5.00.0170.07019.96
5.4.450.0130.04719.36
5.4.440.0070.06319.41
5.4.430.0070.08319.53
5.4.420.0000.08719.50
5.4.410.0030.06019.41
5.4.400.0070.07318.91
5.4.390.0070.05719.23
5.4.380.0100.06319.16
5.4.370.0100.07319.14
5.4.360.0070.03719.13
5.4.350.0070.06018.95
5.4.340.0100.06019.05
5.4.320.0030.06719.13
5.4.310.0070.06318.95
5.4.300.0070.07019.18
5.4.290.0100.07018.87
5.4.280.0030.07019.04
5.4.270.0000.07019.02
5.4.260.0200.06319.04
5.4.250.0070.05718.90
5.4.240.0000.04718.86
5.4.230.0100.07719.21
5.4.220.0030.07718.86
5.4.210.0070.04019.07
5.4.200.0070.07319.13
5.4.190.0100.07019.02
5.4.180.0130.04318.94
5.4.170.0000.07319.06
5.4.160.0030.08019.13
5.4.150.0070.04019.13
5.4.140.0130.06016.30
5.4.130.0030.05016.39
5.4.120.0070.07316.38
5.4.110.0170.04316.41
5.4.100.0030.05316.52
5.4.90.0000.06716.54
5.4.80.0070.03716.55
5.4.70.0070.04716.32
5.4.60.0070.06716.49
5.4.50.0100.06716.32
5.4.40.0030.04716.51
5.4.30.0100.07016.30
5.4.20.0100.07016.30
5.4.10.0000.04316.36
5.4.00.0030.03715.56
5.3.290.0070.07714.73
5.3.280.0000.06314.69
5.3.270.0100.04014.68
5.3.260.0000.08014.57
5.3.250.0070.03714.64
5.3.240.0100.06014.66
5.3.230.0200.05314.70
5.3.220.0030.04714.57
5.3.210.0100.05014.50
5.3.200.0070.04014.63
5.3.190.0000.05014.52
5.3.180.0100.07014.54
5.3.170.0070.03714.52
5.3.160.0100.07014.54
5.3.150.0030.08014.62
5.3.140.0100.05314.53
5.3.130.0100.04314.62
5.3.120.0030.04314.67
5.3.110.0100.04314.47
5.3.100.0070.04014.15
5.3.90.0030.05314.11
5.3.80.0000.04014.17
5.3.70.0030.06014.07
5.3.60.0000.04313.91
5.3.50.0000.04013.86
5.3.40.0070.07714.05
5.3.30.0030.04013.97
5.3.20.0030.03013.63
5.3.10.0000.04313.59
5.3.00.0070.07013.62
5.2.170.0070.06011.14
5.2.160.0070.04311.26
5.2.150.0030.06011.24
5.2.140.0070.02311.20
5.2.130.0000.03711.04
5.2.120.0070.02311.13
5.2.110.0070.02711.15
5.2.100.0030.03711.16
5.2.90.0130.03311.11
5.2.80.0130.03311.13
5.2.70.0030.05011.14
5.2.60.0030.04311.14
5.2.50.0100.02711.05
5.2.40.0030.05711.06
5.2.30.0070.06010.87
5.2.20.0100.05710.95
5.2.10.0100.04010.80
5.2.00.0030.02710.72
5.1.60.0030.02310.12
5.1.50.0000.02710.04
5.1.40.0030.02310.06
5.1.30.0030.02710.34
5.1.20.0030.03310.39
5.1.10.0030.02310.19
5.1.00.0030.02710.19
5.0.50.0000.0208.59
5.0.40.0030.0178.59
5.0.30.0070.0278.59
5.0.20.0000.0208.59
5.0.10.0030.0178.59
5.0.00.0000.0338.59
4.4.90.0000.0208.59
4.4.80.0000.0178.59
4.4.70.0030.0208.59
4.4.60.0030.0338.59
4.4.50.0070.0338.59
4.4.40.0030.0238.59
4.4.30.0000.0178.59
4.4.20.0000.0208.59
4.4.10.0000.0178.59
4.4.00.0030.0238.59
4.3.110.0000.0178.59
4.3.100.0000.0138.59
4.3.90.0030.0138.59
4.3.80.0000.0238.59
4.3.70.0030.0108.59
4.3.60.0030.0108.59
4.3.50.0000.0178.59
4.3.40.0030.0208.59
4.3.30.0030.0108.59
4.3.20.0000.0138.59
4.3.10.0000.0138.59
4.3.00.0000.0138.59

preferences:
44.85 ms | 400 KiB | 5 Q