3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A {} class B extends A{} $b = 'B'; var_dump(is_subclass_of('A', 'A'), is_subclass_of('B', 'A'), is_subclass_of($b, 'A')); var_dump(is_a('A', 'A'), is_a('B', 'A'), is_a($b, 'A'));

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)
8.3.70.0130.00318.30
8.3.60.0060.01518.55
8.3.50.0090.01121.93
8.3.40.0110.00418.68
8.3.30.0060.01318.73
8.3.20.0000.00818.52
8.3.10.0030.00520.96
8.3.00.0060.00323.54
8.2.180.0090.00616.63
8.2.170.0040.01122.96
8.2.160.0060.00922.26
8.2.150.0050.00224.18
8.2.140.0070.00024.66
8.2.130.0040.00426.16
8.2.120.0040.00419.77
8.2.110.0130.00620.35
8.2.100.0040.00717.78
8.2.90.0040.00419.05
8.2.80.0000.00817.97
8.2.70.0050.00317.38
8.2.60.0090.00017.80
8.2.50.0000.00818.07
8.2.40.0050.00318.22
8.2.30.0070.00019.48
8.2.20.0000.00717.66
8.2.10.0000.00817.67
8.2.00.0070.00017.55
8.1.280.0090.01225.92
8.1.270.0070.00023.99
8.1.260.0060.01326.35
8.1.250.0070.00328.09
8.1.240.0090.00022.30
8.1.230.0060.00620.96
8.1.220.0000.00818.77
8.1.210.0000.00818.86
8.1.200.0030.00717.23
8.1.190.0050.00217.41
8.1.180.0050.00318.10
8.1.170.0000.00718.59
8.1.160.0000.00718.70
8.1.150.0040.00418.49
8.1.140.0080.00017.25
8.1.130.0080.00017.83
8.1.120.0000.00717.42
8.1.110.0060.00317.45
8.1.100.0000.00817.39
8.1.90.0000.00917.36
8.1.80.0040.00417.45
8.1.70.0000.00717.38
8.1.60.0000.00717.53
8.1.50.0030.00517.36
8.1.40.0000.00817.47
8.1.30.0000.00717.54
8.1.20.0000.00817.56
8.1.10.0040.00417.40
8.1.00.0070.00017.23
8.0.300.0070.00019.90
8.0.290.0070.00017.05
8.0.280.0030.00318.39
8.0.270.0030.00317.24
8.0.260.0080.00016.63
8.0.250.0000.00716.94
8.0.240.0040.00416.87
8.0.230.0030.00316.89
8.0.220.0070.00016.73
8.0.210.0040.00416.82
8.0.200.0030.00316.89
8.0.190.0000.00816.85
8.0.180.0030.00616.88
8.0.170.0000.00816.92
8.0.160.0040.00416.91
8.0.150.0070.00016.79
8.0.140.0040.00416.68
8.0.130.0100.00013.21
8.0.120.0080.00016.75
8.0.110.0000.00716.87
8.0.100.0050.00216.80
8.0.90.0030.00716.77
8.0.80.0130.00616.89
8.0.70.0050.00216.72
8.0.60.0080.00016.85
8.0.50.0040.00416.78
8.0.30.0120.01016.94
8.0.20.0160.00617.40
8.0.10.0040.00416.89
8.0.00.0150.00316.67
7.4.330.0070.00013.43
7.4.320.0040.00416.51
7.4.300.0000.00716.37
7.4.290.0030.00316.56
7.4.280.0040.00416.45
7.4.270.0030.00316.44
7.4.260.0060.00013.21
7.4.250.0000.00816.39
7.4.240.0030.00316.54
7.4.230.0070.00016.21
7.4.220.0090.00916.53
7.4.210.0080.00916.49
7.4.200.0000.00716.54
7.4.190.0050.00216.54
7.4.160.0200.00316.68
7.4.150.0000.01717.40
7.4.140.0080.01117.86
7.4.130.0080.00916.38
7.4.120.0120.00616.52
7.4.110.0080.00816.47
7.4.100.0150.00316.39
7.4.90.0080.00816.45
7.4.80.0060.01319.39
7.4.70.0080.00916.30
7.4.60.0140.00716.38
7.4.50.0040.00416.38
7.4.40.0100.00622.52
7.4.30.0140.00316.28
7.4.00.0030.01114.94
7.3.330.0020.00213.18
7.3.320.0020.00213.27
7.3.310.0000.00716.09
7.3.300.0000.00616.16
7.3.290.0060.01216.16
7.3.280.0120.00716.18
7.3.270.0070.01117.40
7.3.260.0150.00818.24
7.3.250.0110.00616.27
7.3.240.0120.00616.40
7.3.230.0130.00316.45
7.3.210.0140.00416.12
7.3.200.0100.01419.39
7.3.190.0100.00716.37
7.3.180.0070.01016.27
7.3.170.0100.00716.27
7.3.160.0090.00616.26
7.3.120.0060.01014.95
7.2.330.0120.00616.39
7.2.320.0080.00916.42
7.2.310.0090.00916.61
7.2.300.0090.00816.54
7.2.290.0130.00316.34
7.2.00.0350.00919.02
7.1.100.0030.01018.00
7.1.70.0040.00716.80
7.1.60.0120.01219.40
7.1.50.0090.00916.73
7.1.00.0070.07022.45
7.0.200.0030.00716.68
7.0.140.0070.06721.96
7.0.70.0030.04021.70
7.0.60.0030.04321.66
7.0.50.0100.05722.18
7.0.40.0000.07320.08
7.0.30.0070.05319.99
7.0.20.0030.04320.13
7.0.10.0000.04020.16
7.0.00.0000.08319.95
5.6.280.0030.07020.89
5.6.220.0030.06020.71
5.6.210.0000.04020.74
5.6.200.0000.04720.94
5.6.190.0030.04321.11
5.6.180.0030.04021.05
5.6.170.0030.08321.17
5.6.160.0070.03020.93
5.6.150.0000.03721.02
5.6.140.0100.03320.95
5.6.130.0000.03720.95
5.6.120.0000.04321.02
5.6.110.0000.04321.05
5.6.100.0100.08021.15
5.6.90.0130.05020.93
5.6.80.0030.08020.34
5.6.70.0070.08320.40
5.6.60.0070.06720.39
5.6.50.0030.06720.43
5.6.40.0100.05320.46
5.6.30.0070.07320.42
5.6.20.0000.07320.43
5.6.10.0000.08020.43
5.6.00.0070.07720.39
5.5.360.0030.05320.35
5.5.350.0030.04020.46
5.5.340.0000.04320.92
5.5.330.0000.03720.93
5.5.320.0030.05320.76
5.5.310.0070.03320.91
5.5.300.0030.05320.88
5.5.290.0000.04320.91
5.5.280.0000.04320.91
5.5.270.0000.04320.79
5.5.260.0030.08720.89
5.5.250.0100.08020.64
5.5.240.0100.07720.21
5.5.230.0100.07720.14
5.5.220.0070.07720.23
5.5.210.0030.08020.29
5.5.200.0000.07020.21
5.5.190.0070.08019.99
5.5.180.0030.08720.12
5.5.160.0000.05720.13
5.5.150.0100.05320.24
5.5.140.0100.05020.15
5.5.130.0030.06320.12
5.5.120.0070.05020.17
5.5.110.0100.07320.21
5.5.100.0100.06020.07
5.5.90.0030.04320.00
5.5.80.0070.07720.09
5.5.70.0000.07019.99
5.5.60.0000.08320.03
5.5.50.0070.06720.05
5.5.40.0070.07720.13
5.5.30.0100.06320.08
5.5.20.0100.07320.05
5.5.10.0030.08020.00
5.5.00.0030.08019.93
5.4.450.0000.04319.45
5.4.440.0000.05019.55
5.4.430.0030.08019.57
5.4.420.0100.07719.41
5.4.410.0100.07319.23
5.4.400.0030.07718.95
5.4.390.0000.06319.13
5.4.380.0000.08319.09
5.4.370.0030.08019.03
5.4.360.0070.07319.03
5.4.350.0100.07319.13
5.4.340.0070.08019.20
5.4.320.0030.08019.13
5.4.310.0030.08018.85
5.4.300.0070.04719.16
5.4.290.0100.04319.18
5.4.280.0070.07719.02
5.4.270.0170.06319.12
5.4.260.0030.07718.87
5.4.250.0000.06319.22
5.4.240.0100.07719.22
5.4.230.0000.06319.15
5.4.220.0070.04718.89
5.4.210.0030.06019.04
5.4.200.0030.07719.07
5.4.190.0030.07319.22
5.4.180.0030.08019.20
5.4.170.0030.04319.17
5.4.160.0030.05318.98
5.4.150.0070.08019.01
5.4.140.0000.07716.47
5.4.130.0030.07716.40
5.4.120.0030.05716.38
5.4.110.0030.05016.56
5.4.100.0030.06316.56
5.4.90.0070.07316.41
5.4.80.0000.07016.36
5.4.70.0070.04716.54
5.4.60.0100.07016.36
5.4.50.0100.04016.45
5.4.40.0070.07716.54
5.4.30.0030.05716.47
5.4.20.0070.04316.36
5.4.10.0030.07316.51
5.4.00.0070.07315.87
5.3.290.0030.08014.63
5.3.280.0070.06014.58
5.3.270.0030.06014.53
5.3.260.0030.07314.53
5.3.250.0030.05314.71
5.3.240.0070.07314.57
5.3.230.0100.07014.58
5.3.220.0100.06014.70
5.3.210.0000.04714.59
5.3.200.0030.04014.51
5.3.190.0000.06014.57
5.3.180.0030.07314.60
5.3.170.0030.07714.57
5.3.160.0000.07314.66
5.3.150.0000.07714.62
5.3.140.0000.08014.60
5.3.130.0070.07014.59
5.3.120.0030.06314.53
5.3.110.0070.07714.55
5.3.100.0070.06714.14
5.3.90.0000.06713.96
5.3.80.0030.07314.03
5.3.70.0100.05713.90
5.3.60.0030.06313.88
5.3.50.0030.07314.00
5.3.40.0000.07714.05
5.3.30.0000.07013.93
5.3.20.0030.07013.70
5.3.10.0070.07013.53
5.3.00.0030.07713.75
5.2.170.0030.04712.18
5.2.160.0000.06012.18
5.2.150.0030.06312.18
5.2.140.0000.06012.18
5.2.130.0030.05312.18
5.2.120.0000.04312.18
5.2.110.0030.06312.18
5.2.100.0070.04312.18
5.2.90.0030.05712.18
5.2.80.0030.06012.18
5.2.70.0000.06012.18
5.2.60.0000.06012.18
5.2.50.0000.06712.18
5.2.40.0000.06012.18
5.2.30.0070.04712.18
5.2.20.0030.06012.18
5.2.10.0030.05012.18
5.2.00.0030.06012.18
5.1.60.0000.04012.18
5.1.50.0030.05012.18
5.1.40.0000.02712.18
5.1.30.0030.05712.18
5.1.20.0070.04712.18
5.1.10.0030.05312.18
5.1.00.0030.05712.18
5.0.50.0000.03012.18
5.0.40.0030.04012.18
5.0.30.0030.03312.18
5.0.20.0070.03712.18
5.0.10.0030.03012.18
5.0.00.0130.05712.18
4.4.90.0030.03312.18
4.4.80.0000.03712.18
4.4.70.0000.03712.18
4.4.60.0000.03712.18
4.4.50.0030.03312.18
4.4.40.0000.05012.18
4.4.30.0030.02312.18
4.4.20.0000.03712.18
4.4.10.0000.02712.18
4.4.00.0070.04312.18
4.3.110.0030.03712.18
4.3.100.0000.02312.18
4.3.90.0030.02712.18
4.3.80.0000.05712.18
4.3.70.0000.03312.18
4.3.60.0000.03012.18
4.3.50.0000.03712.18
4.3.40.0000.04312.18
4.3.30.0000.02712.18
4.3.20.0000.03012.18
4.3.10.0000.03012.18
4.3.00.0030.03312.18

preferences:
41.26 ms | 401 KiB | 5 Q