3v4l.org

run code in 300+ PHP versions simultaneously
<?php interface Foo {} class Bar implements Foo {} var_dump(is_a('Bar', 'Foo', true)); var_dump(is_a('Bar', 'Bar', true)); var_dump(is_subclass_of('Bar', 'Foo')); var_dump(is_subclass_of('Bar', 'Bar'));

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)
8.3.60.0100.01016.63
8.3.50.0110.00922.15
8.3.40.0110.00418.43
8.3.30.0130.00318.96
8.3.20.0040.00420.22
8.3.10.0070.00023.66
8.3.00.0040.00421.02
8.2.180.0120.00318.16
8.2.170.0200.00022.96
8.2.160.0120.00320.35
8.2.150.0080.00024.18
8.2.140.0050.00324.66
8.2.130.0000.00726.16
8.2.120.0030.01022.12
8.2.110.0030.00721.89
8.2.100.0040.00717.72
8.2.90.0040.00417.63
8.2.80.0000.00819.17
8.2.70.0000.00817.77
8.2.60.0000.00717.80
8.2.50.0080.00018.10
8.2.40.0000.00720.31
8.2.30.0040.00418.16
8.2.20.0050.00317.50
8.2.10.0070.00018.02
8.2.00.0090.00017.49
8.1.280.0030.01025.92
8.1.270.0080.00023.84
8.1.260.0000.00826.35
8.1.250.0050.00228.09
8.1.240.0040.00422.13
8.1.230.0100.00018.97
8.1.220.0090.00017.74
8.1.210.0040.00418.77
8.1.200.0030.00617.11
8.1.190.0060.00317.23
8.1.180.0040.00418.10
8.1.170.0000.00818.54
8.1.160.0070.00021.89
8.1.150.0040.00418.58
8.1.140.0040.00417.28
8.1.130.0000.00717.73
8.1.120.0000.00817.41
8.1.110.0050.00317.25
8.1.100.0000.00717.46
8.1.90.0000.00717.29
8.1.80.0070.00017.29
8.1.70.0030.00517.36
8.1.60.0000.00817.56
8.1.50.0110.00017.32
8.1.40.0060.00617.46
8.1.30.0000.00817.63
8.1.20.0030.00517.42
8.1.10.0000.00717.29
8.1.00.0040.00417.39
8.0.300.0040.00419.66
8.0.290.0070.00016.63
8.0.280.0040.00418.28
8.0.270.0070.00017.07
8.0.260.0030.00317.25
8.0.250.0070.00016.85
8.0.240.0040.00416.90
8.0.230.0040.00416.83
8.0.220.0030.00316.77
8.0.210.0000.00716.75
8.0.200.0060.00016.85
8.0.190.0000.00816.91
8.0.180.0000.00816.88
8.0.170.0070.00016.77
8.0.160.0030.00316.86
8.0.150.0090.00016.80
8.0.140.0040.00416.67
8.0.130.0030.00313.22
8.0.120.0090.00016.82
8.0.110.0070.00016.75
8.0.100.0040.00416.80
8.0.90.0040.00416.61
8.0.80.0210.00016.88
8.0.70.0000.00816.70
8.0.60.0090.00016.80
8.0.50.0050.00316.82
8.0.30.0080.01016.97
8.0.20.0070.01117.40
8.0.10.0040.00416.89
8.0.00.0100.00716.57
7.4.330.0050.00015.00
7.4.320.0030.00316.51
7.4.300.0000.00616.58
7.4.290.0050.00516.44
7.4.280.0000.00716.51
7.4.270.0030.00316.46
7.4.260.0030.00316.53
7.4.250.0040.00416.51
7.4.240.0050.00216.41
7.4.230.0030.00316.29
7.4.220.0140.00316.43
7.4.210.0050.01016.43
7.4.200.0040.00416.56
7.4.190.0000.00716.41
7.4.160.0110.00616.37
7.4.150.0060.01117.40
7.4.140.0140.00517.86
7.4.130.0120.00516.55
7.4.120.0090.00816.54
7.4.110.0080.00816.41
7.4.100.0120.00616.34
7.4.90.0070.01016.50
7.4.80.0170.00719.39
7.4.70.0050.01116.40
7.4.60.0120.00616.23
7.4.50.0030.00316.60
7.4.40.0140.00316.21
7.4.30.0060.00916.57
7.4.00.0060.01014.77
7.3.330.0040.00413.11
7.3.320.0050.00013.19
7.3.310.0040.00415.97
7.3.300.0070.00016.04
7.3.290.0090.00616.11
7.3.280.0090.01116.21
7.3.270.0090.00817.40
7.3.260.0220.02516.01
7.3.250.0050.01216.30
7.3.240.0070.01016.21
7.3.230.0090.01116.39
7.3.210.0070.01016.46
7.3.200.0140.00719.39
7.3.190.0000.01716.26
7.3.180.0090.00616.37
7.3.170.0130.00316.51
7.3.160.0090.00616.22
7.3.120.0090.00614.59
7.2.330.0150.00316.39
7.2.320.0110.01116.50
7.2.310.0140.00316.52
7.2.300.0060.00916.20
7.2.290.0110.00916.36
7.2.00.0040.00819.00
7.1.100.0000.01118.10
7.1.70.0000.00717.00
7.1.60.0070.01419.46
7.1.50.0080.01516.68
7.1.00.0030.07722.46
7.0.200.0000.00816.52
7.0.140.0070.07022.05
7.0.70.0100.04019.86
7.0.60.0030.04019.88
7.0.50.0100.04020.21
7.0.40.0030.04320.17
7.0.30.0030.05720.17
7.0.20.0170.05319.96
7.0.10.0130.05719.95
7.0.00.0070.03320.09
5.6.220.0070.03720.74
5.6.210.0030.06720.61
5.6.200.0070.04021.06
5.6.190.0030.04021.13
5.6.180.0030.04020.96
5.6.170.0130.03321.04
5.6.160.0030.03320.93
5.6.150.0030.04021.04
5.6.140.0030.03321.08
5.6.130.0070.03021.11
5.6.120.0030.09321.10
5.6.110.0230.05321.00
5.6.100.0130.07720.92
5.6.90.0170.05321.08
5.6.80.0000.05720.40
5.6.70.0200.06720.42
5.6.60.0070.06320.41
5.6.50.0030.06020.42
5.6.40.0100.07720.43
5.6.30.0030.04020.43
5.6.20.0230.06320.43
5.6.10.0070.08020.44
5.6.00.0030.09020.36
5.5.360.0130.04720.55
5.5.350.0000.04020.39
5.5.340.0070.04720.73
5.5.330.0030.04720.91
5.5.320.0030.04020.63
5.5.310.0000.05020.64
5.5.300.0000.04320.77
5.5.290.0000.04720.84
5.5.280.0100.07720.82
5.5.270.0030.08320.89
5.5.260.0070.07320.87
5.5.250.0030.08320.72
5.5.240.0170.07720.31
5.5.230.0100.08320.15
5.5.220.0130.07020.23
5.5.210.0070.05720.00
5.5.200.0070.08720.21
5.5.190.0100.04320.24
5.5.180.0000.07720.18
5.5.160.0030.05720.17
5.5.150.0100.06720.10
5.5.140.0030.06020.14
5.5.130.0100.08320.10
5.5.120.0030.07720.18
5.5.110.0100.08020.22
5.5.100.0130.03320.18
5.5.90.0230.06720.00
5.5.80.0030.08320.11
5.5.70.0070.04720.14
5.5.60.0170.06020.05
5.5.50.0030.08320.08
5.5.40.0070.07320.10
5.5.30.0030.08019.99
5.5.20.0070.07720.04
5.5.10.0070.07720.07
5.5.00.0100.08020.07
5.4.450.0030.04019.45
5.4.440.0170.07019.20
5.4.430.0070.05719.43
5.4.420.0070.04719.20
5.4.410.0070.06019.36
5.4.400.0100.07319.23
5.4.390.0030.07719.13
5.4.380.0070.08019.04
5.4.370.0030.08719.04
5.4.360.0000.05319.18
5.4.350.0070.05018.95
5.4.340.0000.06019.12
5.4.320.0070.07319.18
5.4.310.0100.06019.21
5.4.300.0100.07719.16
5.4.290.0100.06319.04
5.4.280.0000.07019.04
5.4.270.0070.05019.09
5.4.260.0000.06019.14
5.4.250.0030.08719.15
5.4.240.0130.06718.84
5.4.230.0100.07319.20
5.4.220.0030.08719.03
5.4.210.0100.08019.13
5.4.200.0130.07319.02
5.4.190.0100.08018.89
5.4.180.0070.04719.03
5.4.170.0170.06318.87
5.4.160.0070.07719.02
5.4.150.0000.08319.15
5.4.140.0070.07316.46
5.4.130.0030.08316.45
5.4.120.0100.07016.52
5.4.110.0030.07316.39
5.4.100.0030.06716.48
5.4.90.0030.06716.33
5.4.80.0100.06016.39
5.4.70.0100.07016.33
5.4.60.0030.07716.42
5.4.50.0030.08016.24
5.4.40.0030.04316.42
5.4.30.0170.04316.31
5.4.20.0070.07716.24
5.4.10.0070.06316.46
5.4.00.0000.07715.87
5.3.290.0030.05714.68
5.3.280.0070.03714.55
5.3.270.0070.08014.66
5.3.260.0070.07714.62
5.3.250.0030.08014.57
5.3.240.0100.05014.61
5.3.230.0070.08014.59
5.3.220.0100.07014.49
5.3.210.0130.06714.70
5.3.200.0000.07714.57
5.3.190.0070.05014.61
5.3.180.0100.03714.54
5.3.170.0100.07014.52
5.3.160.0070.07314.50
5.3.150.0000.08014.68
5.3.140.0030.08314.69
5.3.130.0070.07714.66
5.3.120.0030.08314.56
5.3.110.0100.06014.64
5.3.100.0070.07713.98
5.3.90.0130.07314.02
5.3.80.0030.07714.06
5.3.70.0100.07713.94
5.3.60.0000.06313.97
5.3.50.0070.07314.08
5.3.40.0030.08014.06
5.3.30.0030.04313.96
5.3.20.0070.06013.75
5.3.10.0130.07013.71
5.3.00.0070.07313.56
5.2.170.0000.04012.41
5.2.160.0070.05012.41
5.2.150.0000.04712.41
5.2.140.0000.07012.41
5.2.130.0000.03312.41
5.2.120.0100.05712.41
5.2.110.0000.05012.41
5.2.100.0030.06012.41
5.2.90.0030.06712.41
5.2.80.0100.04012.41
5.2.70.0030.05012.41
5.2.60.0070.05012.41
5.2.50.0030.06712.41
5.2.40.0030.06312.41
5.2.30.0070.06012.41
5.2.20.0070.05712.41
5.2.10.0070.05312.41
5.2.00.0000.06312.41
5.1.60.0070.04712.41
5.1.50.0100.05012.41
5.1.40.0070.02312.41
5.1.30.0070.02312.41
5.1.20.0000.05712.41
5.1.10.0030.05012.41
5.1.00.0030.06012.41
5.0.50.0130.04012.41
5.0.40.0000.05012.41
5.0.30.0000.05712.41
5.0.20.0000.04312.41
5.0.10.0030.03312.41
5.0.00.0030.06312.41
4.4.90.0030.03012.41
4.4.80.0000.02312.41
4.4.70.0070.03312.41
4.4.60.0000.02712.41
4.4.50.0070.03312.41
4.4.40.0000.06012.41
4.4.30.0030.02012.41
4.4.20.0000.03712.41
4.4.10.0000.04012.41
4.4.00.0070.03712.41
4.3.110.0100.02312.41
4.3.100.0000.03312.41
4.3.90.0000.03012.41
4.3.80.0030.03712.41
4.3.70.0000.03312.41
4.3.60.0000.03012.41
4.3.50.0070.03012.41
4.3.40.0070.03712.41
4.3.30.0000.03712.41
4.3.20.0000.04012.41
4.3.10.0000.03712.41
4.3.00.0000.03012.41

preferences:
39.35 ms | 401 KiB | 5 Q