3v4l.org

run code in 300+ PHP versions simultaneously
<?php interface 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 Test { public function check(Bar $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)
8.3.60.0100.00718.55
8.3.50.0110.00821.99
8.3.40.0110.00418.87
8.3.30.0090.00620.34
8.3.20.0000.00918.56
8.3.10.0030.00520.95
8.3.00.0040.00419.68
8.2.180.0130.00716.32
8.2.170.0110.00322.96
8.2.160.0100.00720.43
8.2.150.0040.00424.18
8.2.140.0000.00724.66
8.2.130.0080.00026.16
8.2.120.0030.01021.00
8.2.110.0040.00420.47
8.2.100.0000.01117.72
8.2.90.0000.00719.09
8.2.80.0000.00719.41
8.2.70.0000.00817.63
8.2.60.0040.00417.90
8.2.50.0030.00518.07
8.2.40.0040.00418.22
8.2.30.0080.00021.20
8.2.20.0070.00017.69
8.2.10.0070.00017.50
8.2.00.0000.00817.68
8.1.280.0120.00925.92
8.1.270.0000.00723.99
8.1.260.0070.01026.35
8.1.250.0000.00728.09
8.1.240.0060.00322.53
8.1.230.0040.00820.97
8.1.220.0050.00318.77
8.1.210.0040.00419.03
8.1.200.0030.00617.22
8.1.190.0040.00417.40
8.1.180.0030.00518.10
8.1.170.0030.00518.48
8.1.160.0040.00418.83
8.1.150.0000.00718.71
8.1.140.0040.00417.45
8.1.130.0000.00717.67
8.1.120.0050.00217.34
8.1.110.0040.00417.31
8.1.100.0030.00317.30
8.1.90.0040.00417.42
8.1.80.0000.00717.41
8.1.70.0000.00717.33
8.1.60.0000.00717.43
8.1.50.0050.00217.32
8.1.40.0040.00417.36
8.1.30.0060.00317.52
8.1.20.0030.00617.44
8.1.10.0000.00917.38
8.1.00.0030.00617.29
8.0.300.0000.00819.98
8.0.290.0070.00017.18
8.0.280.0030.00318.38
8.0.270.0030.00317.19
8.0.260.0030.00316.74
8.0.250.0040.00416.84
8.0.240.0000.00816.98
8.0.230.0050.00316.87
8.0.220.0050.00216.93
8.0.210.0040.00416.95
8.0.200.0050.00216.91
8.0.190.0000.00716.89
8.0.180.0000.00816.99
8.0.170.0060.00316.81
8.0.160.0000.00916.93
8.0.150.0000.00716.84
8.0.140.0070.00016.87
8.0.130.0050.00013.36
8.0.120.0040.00416.90
8.0.110.0040.00416.84
8.0.100.0080.00016.77
8.0.90.0040.00416.76
8.0.80.0090.00616.86
8.0.70.0040.00416.78
8.0.60.0080.00016.69
8.0.50.0000.00716.80
8.0.30.0070.01217.04
8.0.20.0100.00817.40
8.0.10.0080.00017.04
8.0.00.0050.01316.68
7.4.330.0000.00516.78
7.4.320.0000.00616.45
7.4.300.0070.00016.54
7.4.290.0050.00216.45
7.4.280.0070.00016.53
7.4.270.0000.00716.45
7.4.260.0000.00513.24
7.4.250.0050.00216.36
7.4.240.0040.00416.53
7.4.230.0030.00316.43
7.4.220.0120.00316.47
7.4.210.0050.01116.50
7.4.200.0000.00716.53
7.4.190.0030.00316.35
7.4.160.0050.01116.30
7.4.150.0040.01317.40
7.4.140.0140.00717.86
7.4.130.0110.00616.33
7.4.120.0130.00316.62
7.4.110.0150.00316.34
7.4.100.0070.01016.49
7.4.90.0110.00716.32
7.4.80.0060.01319.39
7.4.70.0030.01316.53
7.4.60.0060.01016.46
7.4.50.0000.00816.54
7.4.40.0110.00322.77
7.4.30.0070.01516.45
7.4.00.0070.00714.80
7.3.330.0000.00613.10
7.3.320.0030.00313.04
7.3.310.0030.00316.19
7.3.300.0030.00316.10
7.3.290.0130.00016.23
7.3.280.0070.01016.27
7.3.270.0170.00017.40
7.3.260.0090.01018.24
7.3.250.0070.01016.34
7.3.240.0060.01216.44
7.3.230.0060.01216.39
7.3.210.0080.00916.57
7.3.200.0080.01319.39
7.3.190.0180.00316.38
7.3.180.0030.01816.23
7.3.170.0060.00916.27
7.3.160.0110.00416.23
7.3.120.0060.00915.01
7.2.330.0030.01916.53
7.2.320.0000.01616.55
7.2.310.0120.00616.29
7.2.300.0110.00616.55
7.2.290.0190.00016.39
7.2.60.0100.00616.55
7.2.00.0030.00919.37
7.1.200.0060.00315.54
7.1.70.0000.01016.75
7.1.60.0070.00716.89
7.1.50.0240.01334.69
7.1.00.0000.05722.28
7.0.200.0030.01416.50
7.0.140.0030.07322.07
7.0.100.0030.08321.97
7.0.90.0000.08721.68
7.0.80.0070.07321.69
7.0.70.0000.09021.78
7.0.60.0030.08321.79
7.0.50.0100.06722.16
7.0.40.0070.06320.15
7.0.30.0070.05320.05
7.0.20.0070.08020.04
7.0.10.0030.08020.05
7.0.00.0070.08020.18
5.6.280.0000.07720.99
5.6.250.0070.07020.66
5.6.240.0070.05020.67
5.6.230.0070.07720.69
5.6.220.0100.07320.59
5.6.210.0070.06320.66
5.6.200.0030.04321.03
5.6.190.0070.07021.04
5.6.180.0130.05321.16
5.6.170.0030.07021.02
5.6.160.0000.05021.17
5.6.150.0030.04721.02
5.6.140.0030.05021.07
5.6.130.0030.08320.96
5.6.120.0130.07020.95
5.6.110.0030.05721.11
5.6.100.0030.07321.00
5.6.90.0100.08021.06
5.6.80.0000.04320.41
5.6.70.0130.07320.41
5.6.60.0000.05020.43
5.6.50.0030.05020.45
5.6.40.0070.07720.36
5.6.30.0070.04320.53
5.6.20.0070.05020.30
5.6.10.0100.06320.42
5.6.00.0030.04720.29
5.5.380.0030.08320.35
5.5.370.0000.08720.55
5.5.360.0030.08020.49
5.5.350.0030.09020.45
5.5.340.0070.05020.87
5.5.330.0070.08320.88
5.5.320.0030.09720.93
5.5.310.0070.04320.84
5.5.300.0030.08020.77
5.5.290.0070.05320.92
5.5.280.0000.05720.78
5.5.270.0030.08020.88
5.5.260.0000.07720.86
5.5.250.0100.07720.45
5.5.240.0130.07020.16
5.5.230.0070.04320.17
5.5.220.0070.07320.20
5.5.210.0070.07320.14
5.5.200.0000.07720.14
5.5.190.0100.07020.11
5.5.180.0070.07720.28
5.5.160.0070.07020.18
5.5.150.0130.06720.22
5.5.140.0070.05320.23
5.5.130.0030.07320.10
5.5.120.0000.08020.14
5.5.110.0030.08020.18
5.5.100.0070.07720.05
5.5.90.0100.06320.15
5.5.80.0000.07320.09
5.5.70.0070.06320.05
5.5.60.0000.08320.02
5.5.50.0070.04720.16
5.5.40.0030.08320.05
5.5.30.0070.06319.99
5.5.20.0000.08020.04
5.5.10.0130.07020.01
5.5.00.0130.03720.02
5.4.450.0000.05019.45
5.4.440.0030.08319.44
5.4.430.0170.05719.26
5.4.420.0070.07019.20
5.4.410.0100.03719.24
5.4.400.0070.05719.18
5.4.390.0130.05718.87
5.4.380.0070.07319.13
5.4.370.0000.04719.04
5.4.360.0030.08719.03
5.4.350.0130.06718.90
5.4.340.0000.08019.17
5.4.320.0070.07019.23
5.4.310.0070.06319.16
5.4.300.0130.04018.90
5.4.290.0100.07019.02
5.4.280.0030.07718.88
5.4.270.0100.07019.05
5.4.260.0100.07019.07
5.4.250.0030.05018.91
5.4.240.0070.07018.86
5.4.230.0030.08019.02
5.4.220.0030.07718.94
5.4.210.0030.07319.12
5.4.200.0030.04319.12
5.4.190.0170.06719.08
5.4.180.0030.06719.17
5.4.170.0030.07719.20
5.4.160.0030.04319.02
5.4.150.0070.07319.18
5.4.140.0070.07316.30
5.4.130.0030.04016.46
5.4.120.0000.07016.48
5.4.110.0070.06016.52
5.4.100.0030.03716.56
5.4.90.0070.03716.32
5.4.80.0000.07716.36
5.4.70.0070.06716.38
5.4.60.0000.07716.42
5.4.50.0070.04316.41
5.4.40.0030.04016.41
5.4.30.0030.07016.39
5.4.20.0000.06716.36
5.4.10.0070.07316.43
5.4.00.0000.06315.85
5.3.290.0000.05714.67
5.3.280.0000.04714.73
5.3.270.0070.06314.66
5.3.260.0070.06714.54
5.3.250.0030.07314.72
5.3.240.0000.07314.57
5.3.230.0000.06714.66
5.3.220.0070.06014.50
5.3.210.0070.06314.57
5.3.200.0030.06314.50
5.3.190.0030.04314.50
5.3.180.0030.06714.52
5.3.170.0070.07014.63
5.3.160.0030.07314.59
5.3.150.0030.05714.49
5.3.140.0000.07314.48
5.3.130.0000.05314.67
5.3.120.0070.06314.64
5.3.110.0030.06014.66
5.3.100.0030.04014.05
5.3.90.0000.03713.95
5.3.80.0030.05714.16
5.3.70.0030.06313.93
5.3.60.0000.06014.00
5.3.50.0100.03314.04
5.3.40.0030.07313.96
5.3.30.0030.07313.89
5.3.20.0130.06013.68
5.3.10.0000.07313.69
5.3.00.0070.06713.63
5.2.170.0030.06311.17
5.2.160.0070.05011.00
5.2.150.0000.06311.14
5.2.140.0030.04711.20
5.2.130.0000.06011.22
5.2.120.0030.06011.21
5.2.110.0030.05311.10
5.2.100.0070.05311.21
5.2.90.0000.05011.16
5.2.80.0030.06011.15
5.2.70.0000.06311.11
5.2.60.0000.06711.07
5.2.50.0000.05011.16
5.2.40.0030.06010.98
5.2.30.0070.03710.86
5.2.20.0030.04011.02
5.2.10.0070.04710.77
5.2.00.0030.05310.63
5.1.60.0030.04310.02
5.1.50.0070.04310.04
5.1.40.0030.04710.07
5.1.30.0070.05710.37
5.1.20.0000.06010.48
5.1.10.0030.05710.07
5.1.00.0000.06010.18
5.0.50.0000.0478.39
5.0.40.0100.0338.52
5.0.30.0000.0638.35
5.0.20.0000.0338.35
5.0.10.0030.0378.35
5.0.00.0070.0578.35
4.4.90.0030.0378.35
4.4.80.0000.0278.35
4.4.70.0000.0208.35
4.4.60.0000.0338.35
4.4.50.0030.0278.35
4.4.40.0000.0538.35
4.4.30.0000.0338.35
4.4.20.0000.0308.35
4.4.10.0030.0278.35
4.4.00.0000.0508.35
4.3.110.0000.0338.35
4.3.100.0000.0378.35
4.3.90.0070.0308.35
4.3.80.0030.0478.35
4.3.70.0000.0208.35
4.3.60.0000.0178.35
4.3.50.0000.0178.35
4.3.40.0000.0278.35
4.3.30.0030.0308.35
4.3.20.0000.0378.35
4.3.10.0000.0338.35
4.3.00.0030.0278.35

preferences:
58.27 ms | 401 KiB | 5 Q