3v4l.org

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

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)
8.3.60.0070.00718.14
8.3.50.0130.00821.99
8.3.40.0060.01218.67
8.3.30.0070.00718.96
8.3.20.0050.00320.17
8.3.10.0040.00423.51
8.3.00.0000.00819.20
8.2.180.0100.01018.41
8.2.170.0110.00422.96
8.2.160.0100.00320.52
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0050.00326.16
8.2.120.0000.00819.55
8.2.110.0000.01022.04
8.2.100.0070.00717.91
8.2.90.0080.00018.91
8.2.80.0000.00817.97
8.2.70.0040.00417.38
8.2.60.0050.00317.91
8.2.50.0090.00018.07
8.2.40.0030.00619.76
8.2.30.0040.00417.79
8.2.20.0070.00017.61
8.2.10.0040.00417.83
8.2.00.0040.00417.46
8.1.280.0100.01025.92
8.1.270.0060.00318.71
8.1.260.0000.00726.35
8.1.250.0060.00328.09
8.1.240.0100.00023.83
8.1.230.0040.00719.15
8.1.220.0040.00417.74
8.1.210.0000.00718.77
8.1.200.0050.00917.23
8.1.190.0040.00417.30
8.1.180.0000.00818.68
8.1.170.0040.00418.65
8.1.160.0000.00918.80
8.1.150.0000.00718.80
8.1.140.0080.00017.29
8.1.130.0000.00717.75
8.1.120.0030.00517.38
8.1.110.0080.00017.32
8.1.100.0030.00317.20
8.1.90.0030.00617.33
8.1.80.0000.00717.36
8.1.70.0030.00517.39
8.1.60.0030.00517.45
8.1.50.0030.00617.28
8.1.40.0000.00917.33
8.1.30.0000.00817.56
8.1.20.0040.00417.41
8.1.10.0070.00017.36
8.1.00.0040.00417.20
8.0.300.0030.00318.77
8.0.290.0040.00416.93
8.0.280.0030.00618.32
8.0.270.0030.00317.08
8.0.260.0000.00617.23
8.0.250.0040.00416.84
8.0.240.0000.00716.73
8.0.230.0070.00016.86
8.0.220.0070.00016.79
8.0.210.0000.00816.75
8.0.200.0030.00616.82
8.0.190.0070.00016.84
8.0.180.0020.00516.69
8.0.170.0040.00416.82
8.0.160.0000.00816.82
8.0.150.0070.00016.69
8.0.140.0040.00416.62
8.0.130.0030.00513.16
8.0.120.0060.00316.80
8.0.110.0040.00416.72
8.0.100.0040.00416.79
8.0.90.0070.00016.60
8.0.80.0040.01116.65
8.0.70.0050.00316.61
8.0.60.0070.00016.65
8.0.50.0000.00716.63
8.0.30.0080.01116.78
8.0.20.0070.01217.40
8.0.10.0040.00416.94
8.0.00.0130.00516.72
7.4.330.0030.00315.03
7.4.320.0030.00316.36
7.4.300.0000.00616.38
7.4.290.0040.00416.41
7.4.280.0040.00416.43
7.4.270.0000.00716.37
7.4.260.0070.00016.25
7.4.250.0030.00316.34
7.4.240.0050.00216.40
7.4.230.0030.00316.51
7.4.220.0040.01516.41
7.4.210.0000.01416.33
7.4.200.0040.00416.45
7.4.160.0090.00616.02
7.4.150.0140.00317.40
7.4.140.0090.01317.86
7.4.130.0060.01416.34
7.4.120.0120.00716.14
7.4.110.0160.00316.35
7.4.100.0170.00016.38
7.4.90.0120.00416.33
7.4.80.0000.01619.39
7.4.70.0130.01016.19
7.4.60.0060.01116.24
7.4.50.0040.00415.98
7.4.40.0090.00616.48
7.4.30.0090.01316.23
7.4.00.0040.01214.82
7.3.330.0030.00313.20
7.3.320.0060.00012.97
7.3.310.0000.00716.13
7.3.300.0030.00316.12
7.3.290.0070.00816.18
7.3.280.0110.01016.18
7.3.270.0090.00917.40
7.3.260.0070.01016.13
7.3.250.0100.01016.30
7.3.240.0030.01416.15
7.3.230.0160.00616.39
7.3.210.0130.00316.21
7.3.200.0120.00419.39
7.3.190.0000.01516.21
7.3.180.0090.00916.21
7.3.170.0070.01416.47
7.3.160.0040.01116.41
7.3.00.0120.00016.17
7.2.330.0140.00416.36
7.2.320.0030.01416.37
7.2.310.0090.00616.46
7.2.300.0090.00916.48
7.2.290.0070.01516.53
7.2.130.0090.00616.41
7.2.120.0030.01316.62
7.2.110.0000.01216.46
7.2.100.0070.00316.63
7.2.90.0000.01016.84
7.2.80.0060.00616.31
7.2.70.0030.00716.43
7.2.60.0000.01216.42
7.2.50.0050.00516.63
7.2.40.0030.00616.47
7.2.30.0040.00716.64
7.2.20.0030.00716.52
7.2.10.0070.00716.67
7.2.00.0030.00817.60
7.1.250.0080.00015.68
7.1.240.0040.00415.58
7.1.230.0040.01115.73
7.1.220.0070.00415.70
7.1.210.0040.00715.71
7.1.200.0070.00415.68
7.1.190.0030.00615.61
7.1.180.0030.00715.45
7.1.170.0030.00715.69
7.1.160.0080.00615.63
7.1.150.0040.00815.31
7.1.140.0030.00715.27
7.1.130.0000.01315.59
7.1.120.0030.00715.69
7.1.110.0090.00315.75
7.1.100.0040.00716.84
7.1.90.0060.00615.63
7.1.80.0070.00415.73
7.1.70.0000.00916.25
7.1.60.0110.00317.38
7.1.50.0050.01016.29
7.1.40.0080.00415.63
7.1.30.0000.00815.71
7.1.20.0060.00615.48
7.1.10.0000.01115.68
7.1.00.0080.03718.99
7.0.330.0060.00315.28
7.0.320.0000.00914.97
7.0.310.0030.00715.00
7.0.300.0060.00615.27
7.0.290.0060.00315.14
7.0.280.0030.01015.28
7.0.270.0050.00515.26
7.0.260.0030.00914.96
7.0.250.0040.00715.39
7.0.240.0030.00615.27
7.0.230.0080.00415.18
7.0.220.0030.00615.48
7.0.210.0070.00315.23
7.0.200.0020.00615.93
7.0.190.0030.01415.12
7.0.180.0060.00314.99
7.0.170.0030.00615.29
7.0.160.0000.00914.96
7.0.150.0000.00915.11
7.0.140.0030.02818.82
7.0.130.0070.00715.16
7.0.120.0040.00815.32
7.0.110.0100.00315.25
7.0.100.0090.00615.00
7.0.90.0000.01315.38
7.0.80.0050.00314.98
7.0.70.0000.00715.46
7.0.60.0070.04617.68
7.0.50.0030.02316.72
7.0.40.0080.02716.75
7.0.30.0170.04016.56
7.0.20.0180.03516.79
7.0.10.0050.04916.69
7.0.00.0080.04016.75
5.6.380.0070.00314.25
5.6.370.0030.00713.86
5.6.360.0090.00613.65
5.6.350.0090.00314.26
5.6.340.0070.00714.10
5.6.330.0030.00914.28
5.6.320.0030.00514.27
5.6.310.0070.00714.00
5.6.300.0000.00714.24
5.6.290.0040.00414.23
5.6.280.0020.04017.62
5.6.270.0060.00613.98
5.6.260.0050.00514.38
5.6.250.0090.00314.19
5.6.240.0070.00414.20
5.6.230.0100.00014.03
5.6.220.0000.00814.26
5.6.210.0120.03717.35
5.6.200.0030.02916.15
5.6.190.0080.02217.25
5.6.180.0160.02417.38
5.6.170.0120.02717.26
5.6.160.0060.02517.37
5.6.150.0070.02316.25
5.6.140.0070.04216.25
5.6.130.0090.02716.04
5.6.120.0070.04717.61
5.6.110.0080.02617.44
5.6.100.0070.03917.47
5.6.90.0100.02117.49
5.6.80.0030.02717.32
5.6.70.0040.00713.82
5.6.60.0030.00713.81
5.6.50.0090.00614.20
5.6.40.0040.00714.11
5.6.30.0030.01013.91
5.6.20.0040.00714.14
5.6.10.0030.00613.89
5.6.00.0040.00813.93
5.5.380.0030.00311.18
5.5.370.0030.00511.23
5.5.360.0040.00411.29
5.5.350.0160.02815.78
5.5.340.0070.04514.65
5.5.330.0110.02015.70
5.5.320.0150.02015.69
5.5.310.0150.04215.76
5.5.300.0030.03014.55
5.5.290.0050.02314.60
5.5.280.0050.03716.03
5.5.270.0070.04515.90
5.5.260.0050.03816.02
5.5.250.0050.02215.90
5.5.240.0030.04115.73
5.5.230.0050.00511.18
5.5.220.0000.00711.18
5.5.210.0030.00611.18
5.5.200.0060.00311.18
5.5.190.0070.00011.18
5.5.180.0030.00311.18
5.5.170.0000.01211.18
5.5.160.0000.00711.18
5.5.150.0030.00611.18
5.5.140.0000.01011.18
5.5.130.0050.00311.18
5.5.120.0070.00011.18
5.5.110.0000.00811.18
5.5.100.0030.00611.18
5.5.90.0040.00411.18
5.5.80.0070.00011.18
5.5.70.0030.00711.18
5.5.60.0040.00411.18
5.5.50.0040.00411.18
5.5.40.0040.00411.18
5.5.30.0030.00511.18
5.5.20.0030.00711.18
5.5.10.0050.00011.18
5.5.00.0030.00611.18
5.4.450.0140.03215.19
5.4.440.0400.03215.31
5.4.430.0340.03015.34
5.4.420.0310.03115.34
5.4.410.0100.02715.29
5.4.400.0300.03215.13
5.4.390.0340.02615.17
5.4.380.0150.02814.99
5.4.370.0080.02914.82
5.4.360.0120.02714.98
5.4.350.0150.02514.90
5.4.340.0050.03514.90
5.4.330.0030.00611.18
5.4.320.0130.02714.87
5.4.310.0150.02514.97
5.4.300.0090.03014.82
5.4.290.0130.02414.95
5.4.280.0100.03014.91
5.4.270.0120.02815.03
5.4.260.0090.03114.88
5.4.250.0120.03314.96
5.4.240.0080.03414.97
5.4.230.0120.03014.97
5.4.220.0140.02514.98
5.4.210.0120.02815.00
5.4.200.0070.03313.89
5.4.190.0130.02814.94
5.4.180.0150.02814.96
5.4.170.0110.03015.00
5.4.160.0180.02314.94
5.4.150.0180.02214.88
5.4.140.0110.03013.69
5.4.130.0120.02513.73
5.4.120.0100.03213.76
5.4.110.0100.03213.74
5.4.100.0190.03013.70
5.4.90.0100.03013.70
5.4.80.0070.02913.72
5.4.70.0100.03413.72
5.4.60.0130.02613.71
5.4.50.0050.03313.79
5.4.40.0030.03613.73
5.4.30.0150.02513.81
5.4.20.0110.03113.71
5.4.10.0080.02813.78
5.4.00.0150.02313.54
5.3.290.0150.02812.94
5.3.280.0140.02512.93
5.3.270.0100.03012.98
5.3.260.0130.02812.90
5.3.250.0130.02512.88
5.3.240.0080.03012.94
5.3.230.0070.03412.89
5.3.220.0070.03712.87
5.3.210.0180.02212.87
5.3.200.0140.02612.86
5.3.190.0060.03112.92
5.3.180.0150.03112.88
5.3.170.0170.03412.86
5.3.160.0110.02812.88
5.3.150.0130.02812.94
5.3.140.0050.03712.93
5.3.130.0110.03012.89
5.3.120.0120.03012.88
5.3.110.0070.03312.89
5.3.100.0100.03112.67
5.3.90.0080.03012.62
5.3.80.0110.03012.59
5.3.70.0160.02912.70
5.3.60.0090.03412.58
5.3.50.0080.03712.60
5.3.40.0180.02612.58
5.3.30.0150.02512.55
5.3.20.0090.03012.51
5.3.10.0130.03212.47
5.3.00.0120.03012.51
5.2.170.0080.02811.19
5.2.160.0150.02211.19
5.2.150.0130.02211.22
5.2.140.0120.02311.16
5.2.130.0050.02811.19
5.2.120.0080.02511.16
5.2.110.0120.02311.16
5.2.100.0100.02511.15
5.2.90.0130.02711.20
5.2.80.0110.02211.14
5.2.70.0070.02611.15
5.2.60.0100.02211.16
5.2.50.0050.02911.13
5.2.40.0150.02411.08
5.2.30.0080.02711.08
5.2.20.0060.02411.07
5.2.10.0030.02811.08
5.2.00.0090.02211.03
5.1.60.0040.02010.60
5.1.50.0090.01910.60
5.1.40.0030.02310.68
5.1.30.0090.01810.77
5.1.20.0070.02010.78
5.1.10.0060.02110.69
5.1.00.0080.01810.71
5.0.50.0080.0139.88
5.0.40.0110.0189.85
5.0.30.0090.0259.74
5.0.20.0070.0189.70
5.0.10.0080.0159.72
5.0.00.0050.0229.68
4.4.90.0040.0138.56
4.4.80.0020.0148.53
4.4.70.0080.0108.51
4.4.60.0070.0128.52
4.4.50.0050.0148.53
4.4.40.0030.0228.52
4.4.30.0050.0138.53
4.4.20.0070.0128.60
4.4.10.0030.0178.57
4.4.00.0080.0218.55
4.3.110.0020.0158.55
4.3.100.0010.0158.52
4.3.90.0070.0128.54
4.3.80.0050.0208.47
4.3.70.0080.0088.54
4.3.60.0080.0138.48
4.3.50.0070.0138.49
4.3.40.0050.0208.46
4.3.30.0030.0137.88
4.3.20.0020.0137.85
4.3.10.0020.0157.83
4.3.00.0050.0159.09

preferences:
53.04 ms | 401 KiB | 5 Q