3v4l.org

run code in 300+ PHP versions simultaneously
<?php interface I {} var_dump(class_exists('cI')); // false var_dump(class_exists('C')); // true class cI implements I {} class C {} var_dump(class_exists('cI')); // true var_dump(class_exists('C')); // 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)
8.3.60.0040.01116.48
8.3.50.0150.00022.03
8.3.40.0040.01118.84
8.3.30.0140.00018.96
8.3.20.0070.00020.09
8.3.10.0080.00023.53
8.3.00.0040.00420.94
8.2.180.0090.00618.42
8.2.170.0070.00722.96
8.2.160.0070.00720.53
8.2.150.0060.00324.18
8.2.140.0060.00324.66
8.2.130.0080.00026.16
8.2.120.0000.00720.39
8.2.110.0030.00620.58
8.2.100.0080.00317.72
8.2.90.0030.00619.23
8.2.80.0060.00317.97
8.2.70.0030.00617.59
8.2.60.0070.00017.80
8.2.50.0090.00018.07
8.2.40.0080.00019.94
8.2.30.0040.00418.23
8.2.20.0040.00417.66
8.2.10.0040.00417.86
8.2.00.0020.00517.51
8.1.280.0030.01425.92
8.1.270.0000.00923.91
8.1.260.0090.00026.35
8.1.250.0080.00028.09
8.1.240.0030.00623.91
8.1.230.0130.00022.09
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0060.00317.23
8.1.190.0050.00317.00
8.1.180.0040.00418.10
8.1.170.0060.00318.56
8.1.160.0040.00422.01
8.1.150.0080.00018.63
8.1.140.0040.00417.36
8.1.130.0000.00717.63
8.1.120.0050.00217.41
8.1.110.0040.00417.45
8.1.100.0090.00017.26
8.1.90.0040.00417.29
8.1.80.0040.00417.27
8.1.70.0030.00317.27
8.1.60.0040.00417.50
8.1.50.0080.00017.38
8.1.40.0000.00717.36
8.1.30.0050.00317.50
8.1.20.0020.00517.60
8.1.10.0000.00817.30
8.1.00.0000.00717.20
8.0.300.0040.00418.77
8.0.290.0060.00317.05
8.0.280.0070.00018.41
8.0.270.0000.00817.23
8.0.260.0000.00617.17
8.0.250.0040.00416.92
8.0.240.0050.00216.83
8.0.230.0030.00316.94
8.0.220.0040.00416.82
8.0.210.0070.00016.85
8.0.200.0060.00016.74
8.0.190.0000.00716.90
8.0.180.0090.00016.75
8.0.170.0030.00516.73
8.0.160.0080.00016.80
8.0.150.0020.00516.65
8.0.140.0040.00416.70
8.0.130.0000.00513.21
8.0.120.0040.00416.80
8.0.110.0000.00716.82
8.0.100.0030.00516.80
8.0.90.0040.00416.77
8.0.80.0090.00916.78
8.0.70.0000.00716.84
8.0.60.0000.00716.67
8.0.50.0050.00316.77
8.0.30.0110.00717.05
8.0.20.0120.00817.40
8.0.10.0040.00416.82
8.0.00.0100.00916.56
7.4.330.0030.00315.00
7.4.320.0000.00716.44
7.4.300.0080.00016.33
7.4.290.0070.00016.53
7.4.280.0000.00816.56
7.4.270.0000.00716.45
7.4.260.0050.00216.52
7.4.250.0000.00716.30
7.4.240.0020.00516.48
7.4.230.0000.00716.54
7.4.220.0090.01016.50
7.4.210.0100.00416.44
7.4.200.0000.00716.26
7.4.190.0070.00016.66
7.4.160.0080.00816.61
7.4.150.0100.00717.40
7.4.140.0110.00717.86
7.4.130.0120.00516.44
7.4.120.0100.00816.37
7.4.110.0100.00716.34
7.4.100.0090.00916.36
7.4.90.0130.00316.31
7.4.80.0120.01119.39
7.4.70.0150.00016.37
7.4.60.0070.01016.17
7.4.50.0030.00516.27
7.4.40.0070.01016.46
7.4.30.0130.00316.10
7.4.00.0030.01214.79
7.3.330.0000.00513.20
7.3.320.0050.00013.09
7.3.310.0070.00016.14
7.3.300.0030.00316.04
7.3.290.0060.00816.21
7.3.280.0090.01116.20
7.3.270.0130.00317.40
7.3.260.0060.01016.42
7.3.250.0130.00516.28
7.3.240.0160.00616.43
7.3.230.0040.01216.55
7.3.210.0110.00516.24
7.3.200.0150.00619.39
7.3.190.0180.00016.45
7.3.180.0030.01316.38
7.3.170.0130.00716.45
7.3.160.0230.00016.23
7.3.120.0000.01514.56
7.2.330.0030.01316.63
7.2.320.0040.01316.65
7.2.310.0090.01316.55
7.2.300.0080.00816.43
7.2.290.0080.00816.44
7.2.00.0070.01018.96
7.1.100.0080.00318.21
7.1.70.0040.00417.07
7.1.60.0120.01219.46
7.1.50.0130.01316.93
7.1.00.0030.07322.37
7.0.200.0030.00316.75
7.0.140.0000.07722.05
7.0.60.0070.08719.91
7.0.50.0070.08017.91
7.0.40.0070.04020.16
7.0.30.0270.04720.23
7.0.20.0400.07320.30
7.0.10.0330.05320.16
7.0.00.0070.08720.15
5.6.280.0070.06721.04
5.6.210.0030.06320.60
5.6.200.0070.08018.16
5.6.190.0100.08320.55
5.6.180.3730.04020.59
5.6.170.0230.08320.58
5.6.160.0130.03720.52
5.6.150.0130.03318.16
5.6.140.0030.07318.14
5.6.130.0270.05318.28
5.6.120.0100.08021.11
5.6.110.0100.05321.13
5.6.100.0100.08021.13
5.6.90.0070.07721.02
5.6.80.0030.08020.37
5.6.70.0070.07320.52
5.5.350.0230.06720.41
5.5.340.0070.08018.07
5.5.330.0030.06020.30
5.5.320.0600.05720.20
5.5.310.0270.08020.27
5.5.300.0000.04017.98
5.5.290.0100.08318.03
5.5.280.0030.04020.87
5.5.270.0070.09020.84
5.5.260.0230.06320.88
5.5.250.0100.04020.49
5.5.240.0070.07720.18
5.4.450.0800.07019.31
5.4.440.1100.07019.70
5.4.430.0630.06719.48
5.4.420.0700.00019.52
5.4.410.0270.05018.91
5.4.400.0100.06018.49
5.4.390.0270.04718.80
5.4.380.0370.05718.73
5.4.370.0030.04718.75
5.4.360.0100.04018.61
5.4.350.0060.03512.01
5.4.340.0050.04412.01
5.4.320.0120.04312.50
5.4.310.0070.04412.50
5.4.300.0090.04412.50
5.4.290.0090.05812.50
5.4.280.0090.05512.39
5.4.270.0080.04512.39
5.4.260.0130.04812.39
5.4.250.0090.04912.39
5.4.240.0110.03412.39
5.4.230.0060.04912.38
5.4.220.0110.03512.38
5.4.210.0090.05612.39
5.4.200.0080.04612.39
5.4.190.0070.04212.38
5.4.180.0120.05012.38
5.4.170.0090.05112.39
5.4.160.0070.07612.39
5.4.150.0090.05412.39
5.4.140.0060.05912.07
5.4.130.0070.06212.05
5.4.120.0080.06112.02
5.4.110.0080.05312.01
5.4.100.0090.04812.01
5.4.90.0140.04812.01
5.4.80.0130.04912.01
5.4.70.0050.05112.00
5.4.60.0120.04912.00
5.4.50.0090.05312.00
5.4.40.0100.04711.99
5.4.30.0090.04511.99
5.4.20.0100.04711.99
5.4.10.0100.04511.99
5.4.00.0090.04911.48
5.3.290.0070.04412.80
5.3.280.0130.04512.71
5.3.270.0080.04912.72
5.3.260.0090.05212.72
5.3.250.0120.04712.71
5.3.240.0070.05312.72
5.3.230.0120.04512.71
5.3.220.0100.04812.68
5.3.210.0070.04812.68
5.3.200.0120.04612.68
5.3.190.0120.04612.68
5.3.180.0120.04812.67
5.3.170.0120.05012.67
5.3.160.0170.04312.67
5.3.150.0060.05412.67
5.3.140.0140.03812.66
5.3.130.0060.04012.66
5.3.120.0080.04912.66
5.3.110.0070.05312.66
5.3.100.0080.04312.12
5.3.90.0060.05212.09
5.3.80.0070.04812.08
5.3.70.0100.04412.09
5.3.60.0060.04912.07
5.3.50.0100.04512.02
5.3.40.0050.05012.02
5.3.30.0080.04911.98
5.3.20.0070.04811.76
5.3.10.0110.04311.72
5.3.00.0070.05011.71
5.2.170.0070.0389.21
5.2.160.0060.0409.21
5.2.150.0080.0389.21
5.2.140.0060.0429.21
5.2.130.0070.0399.17
5.2.120.0070.0379.17
5.2.110.0070.0419.18
5.2.100.0060.0459.17
5.2.90.0080.0429.17
5.2.80.0040.0509.17
5.2.70.0070.0479.16
5.2.60.0080.0449.12
5.2.50.0130.0459.08
5.2.40.0050.0439.06
5.2.30.0060.0309.04
5.2.20.0080.0329.03
5.2.10.0050.0358.94
5.2.00.0050.0328.80
5.1.60.0040.0258.08
5.1.50.0040.0418.07
5.1.40.0060.0328.06
5.1.30.0070.0358.41
5.1.20.0080.0368.43
5.1.10.0110.0298.15
5.1.00.0040.0328.17
5.0.50.0020.0226.64
5.0.40.0010.0226.50
5.0.30.0040.0376.31
5.0.20.0020.0296.27
5.0.10.0050.0276.25
5.0.00.0070.0366.24
4.4.90.0030.0234.78
4.4.80.0050.0204.76
4.4.70.0050.0214.75
4.4.60.0010.0184.75
4.4.50.0020.0174.77
4.4.40.0010.0274.71
4.4.30.0020.0214.76
4.4.20.0050.0174.84
4.4.10.0040.0234.85
4.4.00.0030.0344.76
4.3.110.0030.0164.67
4.3.100.0020.0174.67
4.3.90.0030.0154.63
4.3.80.0040.0244.58
4.3.70.0030.0154.63
4.3.60.0040.0144.63
4.3.50.0050.0144.63
4.3.40.0040.0264.54
4.3.30.0020.0183.28
4.3.20.0020.0173.26
4.3.10.0030.0173.22
4.3.00.0130.0206.92

preferences:
39.95 ms | 401 KiB | 5 Q