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', true), is_a('B', 'A', true), is_a($b, 'A', true));

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)
8.3.60.0070.00716.25
8.3.50.0080.01121.99
8.3.40.0110.01118.58
8.3.30.0140.00018.92
8.3.20.0040.00420.25
8.3.10.0040.00423.48
8.3.00.0070.00319.24
8.2.180.0110.00418.52
8.2.170.0150.00622.96
8.2.160.0070.00720.35
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0070.01126.16
8.2.120.0040.00422.13
8.2.110.0100.00622.05
8.2.100.0060.00617.78
8.2.90.0000.01018.97
8.2.80.0050.00317.97
8.2.70.0030.00617.50
8.2.60.0000.00818.04
8.2.50.0060.00318.07
8.2.40.0030.00518.22
8.2.30.0000.00818.10
8.2.20.0000.00817.66
8.2.10.0030.00518.05
8.2.00.0000.01017.70
8.1.280.0060.00925.92
8.1.270.0040.00422.02
8.1.260.0060.00326.35
8.1.250.0070.00028.09
8.1.240.0060.00323.98
8.1.230.0070.00419.03
8.1.220.0040.00417.74
8.1.210.0080.00018.77
8.1.200.0070.00317.22
8.1.190.0080.00017.40
8.1.180.0040.00418.10
8.1.170.0050.00318.50
8.1.160.0050.00221.95
8.1.150.0050.00318.55
8.1.140.0040.00417.32
8.1.130.0030.00317.72
8.1.120.0040.00417.47
8.1.110.0020.00517.41
8.1.100.0040.00417.46
8.1.90.0040.00417.46
8.1.80.0050.00317.37
8.1.70.0000.00717.42
8.1.60.0030.00617.49
8.1.50.0000.00917.43
8.1.40.0040.00417.52
8.1.30.0040.00417.49
8.1.20.0080.00017.59
8.1.10.0040.00417.46
8.1.00.0000.00717.37
8.0.300.0070.00018.77
8.0.290.0090.00016.80
8.0.280.0040.00418.31
8.0.270.0070.00017.27
8.0.260.0000.00717.25
8.0.250.0050.00316.94
8.0.240.0000.00716.93
8.0.230.0070.00016.92
8.0.220.0050.00216.73
8.0.210.0000.00716.89
8.0.200.0030.00316.95
8.0.190.0040.00416.89
8.0.180.0020.00516.91
8.0.170.0030.00516.87
8.0.160.0030.00316.84
8.0.150.0000.00816.75
8.0.140.0000.00716.79
8.0.130.0000.00513.31
8.0.120.0040.00416.75
8.0.110.0050.00316.79
8.0.100.0000.00816.69
8.0.90.0040.00416.80
8.0.80.0030.01016.78
8.0.70.0000.00716.85
8.0.60.0000.00716.96
8.0.50.0050.00216.84
8.0.30.0070.01117.13
8.0.20.0150.00517.40
8.0.10.0070.00016.90
8.0.00.0110.01116.62
7.4.330.0000.00715.00
7.4.320.0060.00016.52
7.4.300.0030.00316.41
7.4.290.0030.00316.47
7.4.280.0060.00016.56
7.4.270.0030.00316.48
7.4.260.0050.00316.30
7.4.250.0030.00516.38
7.4.240.0050.00216.55
7.4.230.0070.00016.34
7.4.220.0070.01016.59
7.4.210.0100.00416.48
7.4.200.0000.00816.53
7.4.190.0000.00716.60
7.4.160.0060.01016.25
7.4.150.0040.01217.40
7.4.140.0130.00817.86
7.4.130.0080.00816.42
7.4.120.0060.01116.49
7.4.110.0070.01116.40
7.4.100.0030.01616.31
7.4.90.0080.00816.37
7.4.80.0120.01519.39
7.4.70.0040.01116.48
7.4.60.0030.01616.48
7.4.50.0020.00216.20
7.4.40.0040.01122.77
7.4.30.0170.00016.37
7.4.00.0090.00615.00
7.3.330.0030.00313.06
7.3.320.0050.00013.20
7.3.310.0000.00716.15
7.3.300.0030.00316.06
7.3.290.0070.00716.17
7.3.280.0090.00816.22
7.3.270.0090.00917.40
7.3.260.0150.00616.46
7.3.250.0150.00416.26
7.3.240.0090.00616.20
7.3.230.0150.00316.41
7.3.210.0090.00916.38
7.3.200.0120.01219.39
7.3.190.0110.00716.55
7.3.180.0120.00616.30
7.3.170.0030.01316.37
7.3.160.0080.00816.47
7.3.120.0060.00614.72
7.3.110.0030.00714.48
7.3.100.0110.00414.69
7.3.90.0090.00614.71
7.3.80.0070.00714.41
7.3.70.0090.00614.70
7.3.60.0030.01214.72
7.3.50.0030.01014.50
7.3.40.0040.00814.83
7.3.30.0030.01014.67
7.3.20.0070.00716.66
7.3.10.0000.01016.45
7.3.00.0060.00616.64
7.2.330.0100.00716.55
7.2.320.0100.01316.68
7.2.310.0100.00716.40
7.2.300.0030.01416.55
7.2.290.0140.00416.21
7.2.250.0120.00614.82
7.2.240.0060.00615.11
7.2.230.0040.01114.88
7.2.220.0030.01414.80
7.2.210.0060.00914.36
7.2.200.0000.01814.58
7.2.190.0030.00914.78
7.2.180.0030.01314.72
7.2.170.0090.00814.93
7.2.60.0100.00316.72
7.2.00.0060.00619.35
7.1.330.0000.01515.79
7.1.320.0100.00615.79
7.1.310.0030.01015.55
7.1.300.0060.00615.69
7.1.290.0040.01215.61
7.1.280.0030.01015.58
7.1.270.0150.00415.74
7.1.260.0110.00715.75
7.1.200.0030.01015.64
7.1.100.0040.01118.09
7.1.70.0050.00217.06
7.1.60.0100.01319.33
7.1.50.0120.00316.78
7.1.00.0000.08022.36
7.0.200.0000.00816.68
7.0.140.0000.07721.92
7.0.70.0100.03719.82
7.0.60.0100.04019.94
7.0.50.0070.04320.26
7.0.40.0030.09020.17
7.0.30.0100.08720.10
7.0.20.0070.09020.12
7.0.10.0200.07720.10
7.0.00.0130.08720.12
5.6.280.0000.07721.14
5.6.220.0030.04020.51
5.6.210.0030.05720.48
5.6.200.0030.05721.06
5.6.190.0130.07321.03
5.6.180.0170.07021.11
5.6.170.0100.08020.95
5.6.160.0070.04720.93
5.6.150.0030.06321.04
5.6.140.0070.08321.05
5.6.130.0000.06720.99
5.6.120.0070.04020.95
5.6.110.0070.04021.04
5.6.100.0130.07021.02
5.6.90.0100.08021.02
5.6.80.0030.05020.34
5.6.70.0030.08020.31
5.6.60.0130.05020.41
5.6.50.0100.07320.41
5.6.40.0030.08320.34
5.6.30.0130.07320.30
5.6.20.0030.05020.38
5.6.10.0030.07020.36
5.6.00.0070.07320.36
5.5.360.0070.04320.43
5.5.350.0030.04320.46
5.5.340.0070.05720.88
5.5.330.0200.06320.87
5.5.320.0070.08320.82
5.5.310.0030.06320.89
5.5.300.0100.08720.88
5.5.290.0200.07020.83
5.5.280.0100.08320.73
5.5.270.0100.05320.63
5.5.260.0200.08320.92
5.5.250.0170.05020.59
5.5.240.0070.05320.29
5.5.230.0100.07720.29
5.5.220.0100.07320.20
5.5.210.0130.07020.22
5.5.200.0070.04720.15
5.5.190.0070.08020.24
5.5.180.0030.08320.27
5.5.160.0130.07320.12
5.5.150.0070.07320.23
5.5.140.0230.06320.26
5.5.130.0100.07720.18
5.5.120.0100.07320.14
5.5.110.0000.06720.26
5.5.100.0070.08320.16
5.5.90.0070.07720.02
5.5.80.0070.07720.06
5.5.70.0100.07719.93
5.5.60.0130.06020.06
5.5.50.0130.07720.03
5.5.40.0030.08320.05
5.5.30.0070.04720.03
5.5.20.0070.07020.02
5.5.10.0070.06020.12
5.5.00.0100.07320.04
5.4.450.0130.07319.23
5.4.440.0100.04019.46
5.4.430.0070.08019.50
5.4.420.0100.07019.45
5.4.410.0130.06019.24
5.4.400.0170.07019.05
5.4.390.0030.04019.22
5.4.380.0030.05718.88
5.4.370.0070.04019.13
5.4.360.0130.04319.21
5.4.350.0100.06719.14
5.4.340.0100.07719.18
5.4.320.0070.08019.11
5.4.310.0030.08319.03
5.4.300.0030.08319.04
5.4.290.0100.07718.94
5.4.280.0000.08719.20
5.4.270.0030.04719.15
5.4.260.0070.05018.85
5.4.250.0070.07018.89
5.4.240.0000.08719.08
5.4.230.0130.04718.87
5.4.220.0100.04719.04
5.4.210.0030.07718.87
5.4.200.0070.05319.13
5.4.190.0030.06318.86
5.4.180.0170.07318.83
5.4.170.0000.08719.11
5.4.160.0200.06318.92
5.4.150.0070.07018.85
5.4.140.0100.07316.39
5.4.130.0070.04016.45
5.4.120.0170.03316.50
5.4.110.0100.05316.35
5.4.100.0130.06716.48
5.4.90.0000.05016.57
5.4.80.0070.07716.46
5.4.70.0070.07316.38
5.4.60.0030.06716.38
5.4.50.0030.04016.48
5.4.40.0100.05316.50
5.4.30.0170.06316.48
5.4.20.0070.06716.41
5.4.10.0030.07316.40
5.4.00.0030.05015.78
5.3.290.0200.06714.77
5.3.280.0070.08314.60
5.3.270.0100.04014.66
5.3.260.0030.05714.70
5.3.250.0100.08014.55
5.3.240.0030.08014.67
5.3.230.0100.07014.71
5.3.220.0030.06314.70
5.3.210.0070.08014.63
5.3.200.0070.04714.62
5.3.190.0070.05714.62
5.3.180.0030.08014.48
5.3.170.0100.07314.51
5.3.160.0000.07014.49
5.3.150.0030.04714.59
5.3.140.0030.07314.64
5.3.130.0070.05714.59
5.3.120.0030.05014.56
5.3.110.0170.07014.68
5.3.100.0070.07314.03
5.3.90.0070.07713.96
5.3.80.0070.08014.15
5.3.70.0070.05013.93
5.3.60.0100.06714.08
5.3.50.0030.05014.01
5.3.40.0100.06314.05
5.3.30.0000.07713.83
5.3.20.0100.07013.69
5.3.10.0070.07713.65
5.3.00.0030.06013.73
5.2.170.0000.07012.19
5.2.160.0100.05712.19
5.2.150.0030.06012.19
5.2.140.0070.05312.19
5.2.130.0030.06712.19
5.2.120.0100.04012.19
5.2.110.0030.06012.19
5.2.100.0100.06012.19
5.2.90.0130.04312.19
5.2.80.0070.06012.19
5.2.70.0070.05312.19
5.2.60.0030.06012.19
5.2.50.0030.06012.19
5.2.40.0000.04012.19
5.2.30.0070.06012.19
5.2.20.0070.05712.19
5.2.10.0030.06312.19
5.2.00.0070.06012.19
5.1.60.0030.03312.19
5.1.50.0030.05712.19
5.1.40.0070.05012.19
5.1.30.0030.05012.19
5.1.20.0000.06312.19
5.1.10.0070.05012.19
5.1.00.0030.03712.19
5.0.50.0130.03312.19
5.0.40.0000.04712.19
5.0.30.0030.06012.19
5.0.20.0030.02012.19
5.0.10.0000.05312.19
5.0.00.0030.05012.19
4.4.90.0000.04012.19
4.4.80.0070.02312.19
4.4.70.0070.03012.19
4.4.60.0100.01312.19
4.4.50.0000.04012.19
4.4.40.0030.03712.19
4.4.30.0000.03312.19
4.4.20.0030.03712.19
4.4.10.0070.03012.19
4.4.00.0000.04312.19
4.3.110.0030.03712.19
4.3.100.0030.01712.19
4.3.90.0030.03312.19
4.3.80.0000.04012.19
4.3.70.0030.03312.19
4.3.60.0000.03312.19
4.3.50.0100.02312.19
4.3.40.0000.03712.19
4.3.30.0030.01712.19
4.3.20.0000.02312.19
4.3.10.0000.03312.19
4.3.00.0000.03012.19

preferences:
41.06 ms | 400 KiB | 5 Q