3v4l.org

run code in 300+ PHP versions simultaneously
<?php $str = '铁'; var_dump(strlen($str)); var_dump(mb_strlen($str));

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)
8.3.40.0110.01118.71
8.3.30.0170.00018.79
8.3.20.0000.00720.13
8.3.10.0040.00423.51
8.3.00.0000.00817.79
8.2.170.0110.00422.96
8.2.160.0070.01020.22
8.2.150.0080.00024.18
8.2.140.0090.00024.66
8.2.130.0060.00326.16
8.2.120.0000.00821.06
8.2.110.0110.00022.18
8.2.100.0070.00418.22
8.2.90.0000.00819.22
8.2.80.0030.00517.97
8.2.70.0040.00417.38
8.2.60.0030.00517.79
8.2.50.0030.00618.07
8.2.40.0030.00519.94
8.2.30.0040.00418.05
8.2.20.0090.00017.59
8.2.10.0040.00418.04
8.2.00.0040.00417.58
8.1.270.0050.00323.96
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0100.00022.19
8.1.230.0050.00519.09
8.1.220.0000.00817.74
8.1.210.0040.00418.77
8.1.200.0030.00617.23
8.1.190.0020.00517.10
8.1.180.0040.00418.10
8.1.170.0080.00018.46
8.1.160.0040.00421.98
8.1.150.0070.00018.84
8.1.140.0050.00217.34
8.1.130.0000.00717.80
8.1.120.0030.00317.32
8.1.110.0040.00417.34
8.1.100.0040.00417.27
8.1.90.0000.00817.37
8.1.80.0000.00817.40
8.1.70.0000.00817.30
8.1.60.0030.00617.46
8.1.50.0030.00617.39
8.1.40.0000.00917.43
8.1.30.0000.00817.63
8.1.20.0050.00317.55
8.1.10.0000.00717.60
8.1.00.0040.00417.38
8.0.300.0000.00718.77
8.0.290.0040.00416.63
8.0.280.0040.00418.35
8.0.270.0040.00417.16
8.0.260.0070.00017.18
8.0.250.0070.00016.97
8.0.240.0030.00316.96
8.0.230.0000.00716.98
8.0.220.0060.00016.76
8.0.210.0000.00716.86
8.0.200.0030.00316.98
8.0.190.0000.00716.82
8.0.180.0040.00416.95
8.0.170.0000.00716.84
8.0.160.0050.00216.94
8.0.150.0000.00816.82
8.0.140.0000.00716.92
8.0.130.0040.00413.30
8.0.120.0000.00716.82
8.0.110.0040.00416.88
8.0.100.0000.00716.83
8.0.90.0000.00816.88
8.0.80.0120.00316.84
8.0.70.0040.00416.91
8.0.60.0000.00716.90
8.0.50.0050.00216.90
8.0.30.0100.01216.90
8.0.20.0100.02217.40
8.0.10.0030.00417.00
8.0.00.0100.00716.58
7.4.330.0020.00215.00
7.4.320.0030.00316.44
7.4.300.0030.00316.57
7.4.290.0000.00716.38
7.4.280.0030.00616.34
7.4.270.0070.00016.32
7.4.260.0000.00716.50
7.4.250.0000.00716.49
7.4.240.0030.00316.50
7.4.230.0030.00316.61
7.4.220.0100.01016.51
7.4.210.0070.00716.30
7.4.200.0040.00416.18
7.4.160.0030.01316.54
7.4.150.0180.00017.40
7.4.140.0090.00917.86
7.4.130.0120.00716.51
7.4.120.0080.00916.40
7.4.110.0090.01516.32
7.4.100.0110.00616.50
7.4.90.0090.00916.35
7.4.80.0160.00419.39
7.4.70.0120.00616.45
7.4.60.0130.00416.42
7.4.50.0030.00316.43
7.4.40.0110.00616.44
7.4.30.0150.00316.16
7.4.00.0100.00314.83
7.3.330.0060.00013.07
7.3.320.0020.00213.11
7.3.310.0070.00016.14
7.3.300.0000.00616.21
7.3.290.0100.01016.11
7.3.280.0100.00716.15
7.3.270.0080.00817.40
7.3.260.0150.00616.49
7.3.250.0110.00916.41
7.3.240.0070.01416.44
7.3.230.0030.01316.54
7.3.210.0110.00516.25
7.3.200.0070.01519.39
7.3.190.0060.01416.21
7.3.180.0060.01516.28
7.3.170.0120.00316.48
7.3.160.0060.00916.18
7.3.120.0100.00614.96
7.3.10.0090.00616.51
7.3.00.0100.00416.36
7.2.330.0090.00916.30
7.2.320.0110.01116.63
7.2.310.0100.00716.41
7.2.300.0000.01516.22
7.2.290.0100.01016.57
7.2.130.0000.01316.43
7.2.120.0090.00616.82
7.2.110.0090.00616.71
7.2.100.0030.00916.96
7.2.90.0040.01216.91
7.2.80.0070.01016.84
7.2.70.0040.01116.71
7.2.60.0030.01016.55
7.2.50.0000.01317.02
7.2.40.0040.01216.84
7.2.30.0080.00517.02
7.2.20.0000.01416.65
7.2.10.0070.01016.59
7.2.00.0040.00917.90
7.1.250.0040.00815.81
7.1.100.1360.00717.97
7.1.70.0040.00416.95
7.1.60.0150.00919.70
7.1.50.0060.01317.00
7.1.00.0070.07322.31
7.0.200.0000.00816.73
7.0.140.0070.07022.12
7.0.60.0030.04719.93
7.0.50.0200.07017.79
7.0.40.0130.03720.06
7.0.30.0200.04020.21
7.0.20.0370.07720.05
7.0.10.0070.04720.20
7.0.00.0170.07320.30
5.6.280.0000.07321.10
5.6.210.0030.08320.66
5.6.200.0130.07718.20
5.6.190.0070.08720.41
5.6.180.0230.08020.61
5.6.170.0300.07020.47
5.6.160.0100.04720.44
5.6.150.0130.06018.16
5.6.140.0030.08318.15
5.6.130.0100.05318.21
5.6.120.0030.08720.98
5.6.110.0100.08321.10
5.6.100.0070.07720.98
5.6.90.0030.09021.09
5.6.80.0130.07720.38
5.6.70.3270.03020.37
5.5.350.0170.08320.40
5.5.340.0070.06317.96
5.5.330.0030.05020.07
5.5.320.0230.03720.30
5.5.310.0230.04720.34
5.5.300.0170.06718.01
5.5.290.0170.06318.02
5.5.280.0100.03720.73
5.5.270.0170.08020.86
5.5.260.0070.03720.86
5.5.250.0000.08320.61
5.5.240.0400.06320.36
5.4.450.0730.06719.52
5.4.440.0130.07019.60
5.4.430.0170.08019.63
5.4.420.0300.06319.60
5.4.410.0070.05318.84
5.4.400.2370.06318.76
5.4.390.0430.04318.62
5.4.380.0130.05718.56
5.4.370.0030.04318.68
5.4.360.0200.03018.55
5.4.350.0110.04411.97
5.4.340.0060.03611.97
5.4.320.0030.04012.45
5.4.310.0060.03912.45
5.4.300.0050.03712.45
5.4.290.0070.03712.45
5.4.280.0080.03312.34
5.4.270.0040.03912.35
5.4.260.0090.04912.34
5.4.250.0050.04712.35
5.4.240.0090.04712.35
5.4.230.0040.04112.34
5.4.220.0080.03412.34
5.4.210.0050.03712.34
5.4.200.0080.03612.34
5.4.190.0070.03612.33
5.4.180.0060.03612.33
5.4.170.0070.03412.35
5.4.160.0070.03512.34
5.4.150.0060.03612.34
5.4.140.0060.03712.02
5.4.130.0050.03712.01
5.4.120.0060.03511.96
5.4.110.0070.03611.96
5.4.100.0070.03411.96
5.4.90.0020.04111.96
5.4.80.0060.03711.96
5.4.70.0130.02911.96
5.4.60.0050.03711.96
5.4.50.0070.03511.96
5.4.40.0050.03611.95
5.4.30.0060.03611.95
5.4.20.0060.03611.95
5.4.10.0060.03511.95
5.4.00.0030.03911.43
5.3.290.0060.04212.80
5.3.280.0080.03612.71
5.3.270.0060.03912.73
5.3.260.0060.04112.72
5.3.250.0070.03512.72
5.3.240.0030.03912.72
5.3.230.0030.04112.71
5.3.220.0060.03812.68
5.3.210.0050.04112.68
5.3.200.0080.03512.68
5.3.190.0060.04012.67
5.3.180.0070.03712.67
5.3.170.0060.03712.67
5.3.160.0070.03612.67
5.3.150.0080.03712.67
5.3.140.0100.03512.66
5.3.130.0050.04212.66
5.3.120.0080.05412.66
5.3.110.0050.04312.66
5.3.100.0070.04512.12
5.3.90.0070.03612.08
5.3.80.0070.03512.07
5.3.70.0100.03412.07
5.3.60.0040.03912.06
5.3.50.0050.03812.00
5.3.40.0090.03412.00
5.3.30.0070.03511.94
5.3.20.0020.04111.72
5.3.10.0040.04111.69
5.3.00.0050.03711.68
5.2.170.0030.0329.18
5.2.160.0050.0299.18
5.2.150.0080.0289.18
5.2.140.0030.0339.17
5.2.130.0100.0369.13
5.2.120.0010.0349.13
5.2.110.0070.0319.14
5.2.100.0070.0279.13
5.2.90.0050.0349.14
5.2.80.0050.0309.13
5.2.70.0060.0299.13
5.2.60.0040.0319.08
5.2.50.0050.0319.05
5.2.40.0050.0299.03
5.2.30.0030.0319.00
5.2.20.0060.0308.99
5.2.10.0060.0298.91
5.2.00.0070.0298.77
5.1.60.0030.0268.06
5.1.50.0030.0268.06
5.1.40.0050.0248.04
5.1.30.0050.0258.39
5.1.20.0030.0288.41
5.1.10.0030.0278.14
5.1.00.0080.0218.14
5.0.50.0060.0186.61
5.0.40.0020.0286.47
5.0.30.0060.0286.28
5.0.20.0060.0176.25
5.0.10.0020.0216.23
5.0.00.0050.0296.22
4.4.90.0020.0164.78
4.4.80.0020.0164.76
4.4.70.0030.0164.75
4.4.60.0020.0174.75
4.4.50.0040.0154.77
4.4.40.0040.0254.71
4.4.30.0070.0124.76
4.4.20.0020.0174.85
4.4.10.0040.0154.85
4.4.00.0000.0284.76
4.3.110.0010.0174.67
4.3.100.0030.0154.67
4.3.90.0020.0154.64
4.3.80.0020.0254.58
4.3.70.0040.0144.63
4.3.60.0020.0164.63
4.3.50.0020.0174.63
4.3.40.0020.0274.54
4.3.30.0020.0173.28
4.3.20.0040.0173.25
4.3.10.0000.0203.21
4.3.00.0100.0237.18

preferences:
37.71 ms | 400 KiB | 5 Q