3v4l.org

run code in 300+ PHP versions simultaneously
<?php class A {} class B extends A {} var_dump(is_a('A','B')); var_dump(is_a('B','A')); var_dump(is_subclass_of('A','B')); var_dump(is_subclass_of('B','A')); var_dump(is_subclass_of('A','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)
8.3.60.0140.00018.16
8.3.50.0090.00921.88
8.3.40.0070.00718.73
8.3.30.0130.00719.09
8.3.20.0040.00420.39
8.3.10.0040.00423.39
8.3.00.0000.00820.89
8.2.180.0070.00718.18
8.2.170.0000.01522.96
8.2.160.0100.00320.35
8.2.150.0060.00324.18
8.2.140.0050.00324.66
8.2.130.0080.00026.16
8.2.120.0080.00022.11
8.2.110.0030.00722.28
8.2.100.0060.00617.66
8.2.90.0000.00718.95
8.2.80.0040.00417.97
8.2.70.0090.00017.38
8.2.60.0050.00317.80
8.2.50.0000.00918.07
8.2.40.0080.00019.75
8.2.30.0040.00418.18
8.2.20.0030.00517.43
8.2.10.0040.00418.00
8.2.00.0050.00217.63
8.1.280.0120.00425.92
8.1.270.0060.00323.96
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0050.00522.14
8.1.230.0070.00419.14
8.1.220.0000.00817.74
8.1.210.0030.00618.77
8.1.200.0000.01017.10
8.1.190.0090.00317.00
8.1.180.0030.00618.76
8.1.170.0000.00818.42
8.1.160.0050.00321.95
8.1.150.0040.00418.55
8.1.140.0050.00317.33
8.1.130.0000.00717.80
8.1.120.0000.00717.29
8.1.110.0040.00417.37
8.1.100.0000.00717.23
8.1.90.0070.00017.40
8.1.80.0070.00017.23
8.1.70.0000.00717.34
8.1.60.0090.00017.36
8.1.50.0040.00417.21
8.1.40.0090.00017.27
8.1.30.0040.00417.54
8.1.20.0070.00017.54
8.1.10.0050.00217.40
8.1.00.0040.00417.36
8.0.300.0030.00518.77
8.0.290.0040.00416.92
8.0.280.0030.00318.27
8.0.270.0000.00717.13
8.0.260.0030.00317.09
8.0.250.0030.00316.84
8.0.240.0030.00316.70
8.0.230.0070.00016.85
8.0.220.0040.00416.72
8.0.210.0030.00316.76
8.0.200.0060.00016.81
8.0.190.0070.00016.84
8.0.180.0080.00016.79
8.0.170.0000.00716.86
8.0.160.0040.00416.84
8.0.150.0030.00316.71
8.0.140.0030.00316.76
8.0.130.0030.00313.20
8.0.120.0030.00616.74
8.0.110.0040.00416.78
8.0.100.0060.00316.76
8.0.90.0000.00816.60
8.0.80.0090.00916.76
8.0.70.0030.00516.64
8.0.60.0000.00716.81
8.0.50.0000.00716.58
8.0.30.0130.00616.88
8.0.20.0130.00617.40
8.0.10.0050.00216.80
8.0.00.0120.00616.59
7.4.330.0040.00315.00
7.4.320.0000.00616.36
7.4.300.0030.00316.46
7.4.290.0030.00716.44
7.4.280.0000.00716.48
7.4.270.0000.00716.52
7.4.260.0070.00016.48
7.4.250.0000.00816.33
7.4.240.0000.00716.41
7.4.230.0070.00016.56
7.4.220.0110.00716.59
7.4.210.0050.00916.47
7.4.200.0000.00716.26
7.4.190.0030.00316.35
7.4.160.0160.00016.39
7.4.150.0120.00617.40
7.4.140.0070.01017.86
7.4.130.0080.00916.38
7.4.120.0120.00816.35
7.4.110.0030.01316.24
7.4.100.0090.00916.33
7.4.90.0040.01516.36
7.4.80.0060.01219.39
7.4.70.0110.00616.44
7.4.60.0070.01616.29
7.4.50.0000.00516.34
7.4.40.0100.00816.26
7.4.30.0040.01216.52
7.4.00.0060.00914.71
7.3.330.0060.00013.11
7.3.320.0030.00313.14
7.3.310.0050.00216.13
7.3.300.0030.00316.05
7.3.290.0090.00616.21
7.3.280.0130.00416.14
7.3.270.0030.01417.40
7.3.260.0080.00816.19
7.3.250.0030.01516.35
7.3.240.0100.00716.14
7.3.230.0030.01316.39
7.3.210.0090.00916.47
7.3.200.0110.01419.39
7.3.190.0110.00916.17
7.3.180.0060.01016.50
7.3.170.0140.00816.52
7.3.160.0090.00616.31
7.3.120.0030.01314.50
7.3.10.0100.00316.64
7.3.00.0070.00316.35
7.2.330.0070.01016.42
7.2.320.0070.01116.23
7.2.310.0070.01016.44
7.2.300.0030.01316.34
7.2.290.0060.01016.55
7.2.130.0080.00416.54
7.2.120.0110.00416.66
7.2.110.0000.01416.77
7.2.100.0090.00616.84
7.2.90.0060.00916.77
7.2.80.0030.00716.82
7.2.70.0030.00716.77
7.2.60.0100.00716.78
7.2.50.0000.01316.51
7.2.40.0030.01016.58
7.2.30.0100.00316.73
7.2.20.0070.00716.52
7.2.10.0100.00016.76
7.2.00.0050.01117.87
7.1.250.0040.00715.59
7.1.200.0040.00815.69
7.1.100.0000.01218.13
7.1.70.0000.01116.75
7.1.60.0030.02019.46
7.1.50.0030.01316.90
7.1.00.0070.07322.32
7.0.200.0100.00016.79
7.0.140.0030.07322.10
7.0.60.0030.09019.93
7.0.50.0070.07717.91
7.0.40.0130.07719.91
7.0.30.0230.03720.15
7.0.20.0330.07020.06
7.0.10.0030.04720.21
7.0.00.0130.06320.09
5.6.280.0130.06020.78
5.6.210.0100.03720.72
5.6.200.0070.08718.21
5.6.190.0000.05720.47
5.6.180.0270.05320.77
5.6.170.0300.04320.55
5.6.160.0070.06020.44
5.6.150.0030.08318.27
5.6.140.0100.04318.19
5.6.130.0100.08318.24
5.6.120.0030.07321.14
5.6.110.0070.08321.03
5.6.100.0030.04321.13
5.6.90.0000.07020.94
5.6.80.0170.06720.41
5.5.350.0370.07020.45
5.5.340.0200.04018.05
5.5.330.0070.07720.46
5.5.320.0030.04320.24
5.5.310.0200.04020.32
5.5.300.0000.06718.05
5.5.290.0030.04017.91
5.5.280.0100.03720.77
5.5.270.0170.07320.85
5.5.260.0100.04320.73
5.5.250.0130.06720.70
5.5.240.0170.07020.23
5.4.450.0130.06019.63
5.4.440.1030.06019.57
5.4.430.0770.05719.43
5.4.420.0870.06019.56
5.4.410.0230.05719.44
5.4.400.0870.05718.88
5.4.390.1070.05018.98
5.4.380.0130.05718.57
5.4.370.0130.05018.84
5.4.360.0100.05318.61
5.4.350.0170.05018.47
5.4.340.0230.04018.78
5.4.320.0070.03712.49
5.4.310.0040.04212.49
5.4.300.0060.04612.50
5.4.290.0090.04412.49
5.4.280.0070.03712.39
5.4.270.0110.03512.39
5.4.260.0100.05712.39
5.4.250.0350.12012.39
5.4.240.0160.09512.39
5.4.230.0090.05512.38
5.4.220.0070.05712.38
5.4.210.0110.07212.38
5.4.200.0080.05312.38
5.4.190.0110.05212.38
5.4.180.0100.08212.38
5.4.170.0160.08212.39
5.4.160.0210.06312.39
5.4.150.0220.05212.39
5.4.140.0210.10712.07
5.4.130.0260.06712.06
5.4.120.0140.07212.02
5.4.110.0130.07212.00
5.4.100.0100.04112.00
5.4.90.0110.05912.00
5.4.80.0170.05712.01
5.4.70.0300.12312.01
5.4.60.0250.08512.00
5.4.50.0230.06412.00
5.4.40.0240.10511.99
5.4.30.0110.06511.99
5.4.20.0120.05811.99
5.4.10.0230.07111.99
5.4.00.0100.07011.48
5.3.290.0080.05212.80
5.3.280.0180.07012.71
5.3.270.0130.06612.72
5.3.260.0150.08912.72
5.3.250.0200.07212.72
5.3.240.0190.07312.72
5.3.230.0200.08812.70
5.3.220.0170.10512.68
5.3.210.0160.07112.68
5.3.200.0170.10912.68
5.3.190.0120.07412.68
5.3.180.0150.07412.67
5.3.170.0130.06612.67
5.3.160.0140.05412.67
5.3.150.0100.05312.67
5.3.140.0140.03612.66
5.3.130.0130.05912.66
5.3.120.0110.06312.66
5.3.110.0120.07712.66
5.3.100.0220.06212.12
5.3.90.0240.11612.09
5.3.80.0230.07012.08
5.3.70.0140.06712.08
5.3.60.0230.08412.07
5.3.50.0260.07012.02
5.3.40.0150.06412.02
5.3.30.0200.06811.98
5.3.20.0130.06911.75
5.3.10.0150.04711.72
5.3.00.0100.03511.71
5.2.170.0100.0409.21
5.2.160.0060.0409.21
5.2.150.0160.0449.21
5.2.140.0230.0519.22
5.2.130.0120.0419.17
5.2.120.0130.0459.17
5.2.110.0090.0489.18
5.2.100.0090.0359.18
5.2.90.0090.0349.17
5.2.80.0110.0539.17
5.2.70.0090.0399.17
5.2.60.0060.0419.12
5.2.50.0070.0339.09
5.2.40.0090.0449.07
5.2.30.0080.0369.04
5.2.20.0110.0489.03
5.2.10.0060.0408.93
5.2.00.0080.0418.80
5.1.60.0060.0358.08
5.1.50.0070.0308.07
5.1.40.0080.0248.06
5.1.30.0070.0368.41
5.1.20.0050.0438.43
5.1.10.0080.0418.15
5.1.00.0090.0338.16
5.0.50.0060.0226.64
5.0.40.0030.0226.49
5.0.30.0050.0406.31
5.0.20.0070.0236.28
5.0.10.0100.0236.25
5.0.00.0130.0396.24
4.4.90.0060.0214.78
4.4.80.0040.0164.75
4.4.70.0040.0164.75
4.4.60.0040.0164.75
4.4.50.0040.0164.77
4.4.40.0020.0284.71
4.4.30.0030.0154.76
4.4.20.0030.0174.85
4.4.10.0030.0174.85
4.4.00.0030.0264.76
4.3.110.0030.0174.67
4.3.100.0030.0174.66
4.3.90.0030.0174.63
4.3.80.0040.0274.58
4.3.70.0060.0194.63
4.3.60.0030.0174.63
4.3.50.0070.0174.63
4.3.40.0060.0234.54
4.3.30.0000.0193.29
4.3.20.0020.0183.27
4.3.10.0070.0333.23
4.3.00.0070.01016.15

preferences:
40.44 ms | 401 KiB | 5 Q