3v4l.org

run code in 300+ PHP versions simultaneously
<?php interface A {} class B implements A {} class C extends B {} $b = new B; var_dump(is_a($b, 'A')); $c = new C; var_dump(is_a($c, 'A')); var_dump(is_a($c, 'B')); var_dump(is_a($c, 'C')); var_dump(is_a('C', 'B', 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)
8.3.60.0110.00416.50
8.3.50.0030.01317.26
8.3.40.0110.00418.40
8.3.30.0110.00418.72
8.3.20.0080.00018.35
8.3.10.0060.00318.27
8.3.00.0040.00419.13
8.2.180.0150.00016.47
8.2.170.0060.00922.96
8.2.160.0070.01020.87
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0070.00026.16
8.2.120.0070.00319.13
8.2.110.0040.00721.11
8.2.100.0110.00017.72
8.2.90.0080.00019.30
8.2.80.0050.00319.26
8.2.70.0040.00417.50
8.2.60.0040.00417.80
8.2.50.0040.00418.07
8.2.40.0030.00618.09
8.2.30.0070.00017.98
8.2.20.0000.00817.59
8.2.10.0040.00417.66
8.2.00.0040.00417.68
8.1.270.0000.00724.66
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0030.00722.46
8.1.230.0070.00420.95
8.1.220.0030.00517.75
8.1.210.0000.00918.93
8.1.200.0060.00617.23
8.1.190.0000.00917.40
8.1.180.0090.00018.10
8.1.170.0040.00418.82
8.1.160.0000.00818.88
8.1.150.0000.00718.63
8.1.140.0000.00817.44
8.1.130.0000.00717.86
8.1.120.0030.00317.38
8.1.110.0000.00717.46
8.1.100.0040.00417.39
8.1.90.0040.00417.41
8.1.80.0000.00717.35
8.1.70.0000.00717.39
8.1.60.0040.00417.56
8.1.50.0000.00917.52
8.1.40.0040.00417.54
8.1.30.0000.00717.64
8.1.20.0000.00717.67
8.1.10.0040.00417.43
8.1.00.0000.00817.28
8.0.300.0040.00419.98
8.0.290.0040.00416.75
8.0.280.0030.00318.44
8.0.270.0040.00417.24
8.0.260.0000.01016.73
8.0.250.0000.00716.86
8.0.240.0070.00016.86
8.0.230.0030.00316.93
8.0.220.0000.00616.79
8.0.210.0070.00016.86
8.0.200.0040.00416.99
8.0.190.0070.00016.95
8.0.180.0040.00416.82
8.0.170.0040.00416.79
8.0.160.0040.00316.98
8.0.150.0000.00816.91
8.0.140.0000.00816.76
8.0.130.0030.00313.29
8.0.120.0050.00216.84
8.0.110.0050.00216.77
8.0.100.0040.00416.77
8.0.90.0020.00516.77
8.0.80.0000.01416.86
8.0.70.0070.00016.89
8.0.60.0040.00416.83
8.0.50.0000.00816.83
8.0.30.0070.01116.93
8.0.20.0130.00617.04
8.0.10.0000.00716.89
8.0.00.0050.01616.80
7.4.330.0060.00012.98
7.4.320.0030.00316.48
7.4.300.0000.00616.55
7.4.290.0040.00416.49
7.4.280.0070.00016.48
7.4.270.0070.00016.49
7.4.260.0030.00313.19
7.4.250.0040.00416.63
7.4.240.0040.00416.63
7.4.230.0070.00016.60
7.4.220.0150.00316.34
7.4.210.0100.00716.60
7.4.200.0040.00416.62
7.4.190.0000.00716.39
7.4.160.0110.01116.49
7.4.150.0110.00716.54
7.4.140.0080.00916.42
7.4.130.0050.01316.41
7.4.120.0050.01316.38
7.4.110.0090.00616.55
7.4.100.0110.00716.46
7.4.90.0120.00916.45
7.4.80.0100.00719.39
7.4.70.0060.01116.39
7.4.60.0000.01616.36
7.4.50.0070.00016.31
7.4.40.0000.01816.41
7.4.30.0080.01316.50
7.4.00.0130.00314.88
7.3.330.0060.00013.09
7.3.320.0060.00013.16
7.3.310.0050.00216.08
7.3.300.0000.00716.18
7.3.290.0200.00316.25
7.3.280.0090.00716.25
7.3.270.0110.01216.25
7.3.260.0160.00616.41
7.3.250.0130.01016.42
7.3.240.0180.00316.49
7.3.230.0100.00716.56
7.3.210.0060.01216.37
7.3.200.0070.01016.59
7.3.190.0110.01116.16
7.3.180.0060.01516.55
7.3.170.0060.00916.37
7.3.160.0090.00616.32
7.3.120.0100.00314.68
7.3.10.0000.01616.28
7.3.00.0040.01116.52
7.2.330.0060.01216.59
7.2.320.0070.01016.57
7.2.310.0160.00616.42
7.2.300.0170.01216.51
7.2.290.0000.01516.42
7.2.130.0060.00616.72
7.2.120.0120.00316.79
7.2.110.0060.00916.71
7.2.100.0100.00716.63
7.2.90.0080.00416.64
7.2.80.0000.01416.38
7.2.70.0000.01416.64
7.2.60.0100.00716.50
7.2.50.0090.00416.63
7.2.40.0100.00616.82
7.2.30.0090.00616.75
7.2.20.0040.01216.76
7.2.10.0120.00016.82
7.2.00.0050.00818.13
7.1.250.0070.00715.41
7.1.240.0030.00715.73
7.1.230.0000.01515.74
7.1.220.0070.00715.39
7.1.210.0040.00715.66
7.1.200.0060.00615.72
7.1.190.0070.01115.61
7.1.180.0070.00715.41
7.1.170.0110.00315.51
7.1.160.0060.00615.77
7.1.150.0100.00315.57
7.1.140.0000.00915.79
7.1.130.0000.01515.71
7.1.120.0090.00615.71
7.1.110.0000.01115.89
7.1.100.0050.00916.75
7.1.90.0040.01115.77
7.1.80.0070.00715.88
7.1.70.0030.00616.39
7.1.60.0080.01117.60
7.1.50.0020.01716.18
7.1.40.0000.01415.79
7.1.30.0100.00315.65
7.1.20.0000.01115.51
7.1.10.0030.01015.85
7.1.00.0020.04519.01
7.0.330.0060.00615.51
7.0.320.0000.01015.24
7.0.310.0060.00315.28
7.0.300.0030.01015.10
7.0.290.0100.00314.98
7.0.280.0000.01015.29
7.0.270.0000.00815.16
7.0.260.0030.01015.14
7.0.250.0070.00715.42
7.0.240.0040.00815.55
7.0.230.0070.00315.44
7.0.220.0030.01015.36
7.0.210.0090.00615.32
7.0.200.0050.00516.00
7.0.190.0000.01315.28
7.0.180.0030.01015.41
7.0.170.0030.00915.32
7.0.160.0040.01115.20
7.0.150.0060.00315.40
7.0.140.0020.04318.72
7.0.130.0150.00315.14
7.0.120.0070.03618.53
7.0.110.0070.00715.09
7.0.100.0070.00715.30
7.0.90.0030.00915.18
7.0.80.0110.00015.26
7.0.70.0070.00715.11
7.0.60.0000.04117.62
7.0.50.0080.03316.52
7.0.40.0020.04716.72
7.0.30.0180.03116.81
7.0.20.0220.04216.70
7.0.10.0130.04316.71
7.0.00.0050.03216.80
5.6.380.0070.00714.38
5.6.370.0120.00314.06
5.6.360.0070.00714.09
5.6.350.0030.01314.22
5.6.340.0040.01114.20
5.6.330.0110.00314.12
5.6.320.0090.00614.03
5.6.310.0110.00414.32
5.6.300.0030.01313.91
5.6.290.0060.00913.84
5.6.280.0120.00414.14
5.6.270.0090.00014.18
5.6.260.0080.00413.87
5.6.250.0050.00514.17
5.6.240.0060.00914.00
5.6.230.0080.00814.06
5.6.220.0070.00314.39
5.6.210.0030.04817.48
5.6.200.0070.04616.13
5.6.190.0080.04417.28
5.6.180.0190.04217.38
5.6.170.0180.04217.46
5.6.160.0100.04517.35
5.6.150.0020.02716.15
5.6.140.0060.04216.18
5.6.130.0070.04216.11
5.6.120.0030.03917.54
5.6.110.0040.02917.58
5.6.100.0060.04517.60
5.6.90.0050.04517.60
5.6.80.0070.04017.35
5.6.70.0130.04317.14
5.6.60.0180.00313.98
5.6.50.0110.00713.72
5.6.40.0170.00414.02
5.6.30.0150.00614.04
5.6.20.0130.00313.98
5.6.10.0100.00714.33
5.6.00.0130.01014.32
5.5.380.0070.00311.18
5.5.370.0030.00611.06
5.5.360.0060.00611.26
5.5.350.0160.01815.75
5.5.340.0050.02314.67
5.5.330.0010.03115.60
5.5.320.0140.04315.83
5.5.310.0130.02615.71
5.5.300.0060.02314.65
5.5.290.0040.02314.48
5.5.280.0030.03216.08
5.5.270.0070.04215.81
5.5.260.0100.03315.78
5.5.250.0060.03615.91
5.5.240.0030.02315.66
5.5.230.0000.00811.09
5.5.220.0060.00311.00
5.5.210.0090.00611.16
5.5.200.0110.00411.07
5.5.190.0090.00310.91
5.5.180.0150.01110.53
5.5.170.0110.00410.71
5.5.160.0080.00810.52
5.5.150.0160.00410.84
5.5.140.0160.00410.99
5.5.130.0030.01010.97
5.5.120.0180.00310.80
5.5.110.0000.00810.74
5.5.100.0030.00810.97
5.5.90.0150.00410.79
5.5.80.0030.00910.66
5.5.70.0110.00410.98
5.5.60.0080.00810.50
5.5.50.0150.00910.81
5.5.40.0160.00410.55
5.5.30.0170.00311.21
5.5.20.0230.00611.13
5.5.10.0280.00011.18
5.5.00.0240.00711.04
5.4.450.0030.03115.24
5.4.440.0060.02115.19
5.4.430.0100.03715.28
5.4.420.0070.02815.20
5.4.410.0040.04114.80
5.4.400.0050.02914.82
5.4.390.0090.02414.77
5.4.380.0060.02015.17
5.4.370.0170.03015.13
5.4.360.0090.04414.80
5.4.350.0020.04215.02
5.4.340.0120.03514.93
5.4.330.0060.00611.13
5.4.320.0090.03514.87
5.4.310.0040.04214.92
5.4.300.0080.02615.05
5.4.290.0050.02114.98
5.4.280.0080.02414.96
5.4.270.0070.02014.93
5.4.260.0080.04515.13
5.4.250.0030.02715.03
5.4.240.0080.04014.96
5.4.230.0050.02615.15
5.4.220.0160.03814.91
5.4.210.0060.04315.00
5.4.200.0110.02915.11
5.4.190.0100.02514.61
5.4.180.0090.02415.00
5.4.170.0070.04514.90
5.4.160.0060.02114.95
5.4.150.0090.03714.69
5.4.140.0060.02213.54
5.4.130.0030.03113.41
5.4.120.0110.02813.49
5.4.110.0070.04013.48
5.4.100.0060.02013.66
5.4.90.0100.02213.40
5.4.80.0050.03313.34
5.4.70.0060.03013.45
5.4.60.0090.03713.70
5.4.50.0070.03513.58
5.4.40.0060.02913.63
5.4.30.0070.03013.63
5.4.20.0040.02213.42
5.4.10.0080.03013.62
5.4.00.0050.02013.46
5.3.290.0070.02012.68
5.3.280.0080.03912.49
5.3.270.0070.02812.60
5.3.260.0000.02712.43
5.3.250.0110.02012.61
5.3.240.0100.03312.54
5.3.230.0060.03312.55
5.3.220.0050.02012.51
5.3.210.0100.02312.49
5.3.200.0070.02212.38
5.3.190.0180.02912.55
5.3.180.0170.03312.57
5.3.170.0030.03012.57
5.3.160.0120.03712.56
5.3.150.0030.04012.54
5.3.140.0080.03812.57
5.3.130.0050.02612.54
5.3.120.0030.02612.51
5.3.110.0140.03212.51
5.3.100.0080.02112.29
5.3.90.0030.04512.21
5.3.80.0030.02912.30
5.3.70.0020.02712.09
5.3.60.0090.03312.28
5.3.50.0080.03512.19
5.3.40.0110.01912.29
5.3.30.0080.02812.12
5.3.20.0070.02012.05
5.3.10.0030.02311.96
5.3.00.0060.02911.82
5.2.170.0060.02810.43
5.2.160.0040.01810.38
5.2.150.0000.02110.23
5.2.140.0050.01810.28
5.2.130.0070.02010.26
5.2.120.0090.03010.33
5.2.110.0020.02610.24
5.2.100.0060.01910.30
5.2.90.0030.03310.32
5.2.80.0020.03410.31
5.2.70.0020.03210.11
5.2.60.0050.03310.18
5.2.50.0070.02310.27
5.2.40.0070.02710.23
5.2.30.0070.01710.07
5.2.20.0030.01910.08
5.2.10.0050.0189.90
5.2.00.0040.0169.98
5.1.60.0070.0279.24
5.1.50.0020.0239.17
5.1.40.0000.0179.22
5.1.30.0030.0179.52
5.1.20.0090.0139.41
5.1.10.0070.0229.34
5.1.00.0120.0279.18
5.0.50.0070.0238.07
5.0.40.0070.0188.13
5.0.30.0050.0327.94
5.0.20.0050.0227.90
5.0.10.0060.0218.01
5.0.00.0030.0297.96
4.4.90.0000.0187.72
4.4.80.0030.0237.72
4.4.70.0030.0127.72
4.4.60.0010.0117.72
4.4.50.0040.0087.72
4.4.40.0050.0227.72
4.4.30.0000.0137.72
4.4.20.0030.0117.72
4.4.10.0060.0197.72
4.4.00.0050.0327.72
4.3.110.0020.0157.72
4.3.100.0030.0217.72
4.3.90.0020.0187.72
4.3.80.0030.0237.72
4.3.70.0030.0207.72
4.3.60.0050.0187.72
4.3.50.0020.0137.72
4.3.40.0010.0197.72
4.3.30.0010.0097.72
4.3.20.0050.0087.72
4.3.10.0020.0097.72
4.3.00.0000.0207.72

preferences:
58.57 ms | 400 KiB | 5 Q