3v4l.org

run code in 300+ PHP versions simultaneously
<?php $word = 'something'; echo substr($word, -1); // g? echo substr($word, 0, 1); // s?

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)
8.3.40.0140.00318.57
8.3.30.0090.00618.89
8.3.20.0000.00720.27
8.3.10.0080.00021.68
8.3.00.0040.00417.79
8.2.170.0110.00422.96
8.2.160.0070.00720.57
8.2.150.0000.00724.18
8.2.140.0050.00324.66
8.2.130.0040.00426.16
8.2.120.0000.00720.91
8.2.110.0070.00320.54
8.2.100.0040.00817.72
8.2.90.0000.00818.16
8.2.80.0090.00017.97
8.2.70.0030.00617.63
8.2.60.0060.00317.93
8.2.50.0050.00318.07
8.2.40.0040.00418.22
8.2.30.0030.00618.29
8.2.20.0000.00717.53
8.2.10.0040.00417.86
8.2.00.0000.00817.66
8.1.270.0080.00023.84
8.1.260.0070.00026.35
8.1.250.0040.00428.09
8.1.240.0070.00322.13
8.1.230.0110.00020.96
8.1.220.0030.00617.74
8.1.210.0000.00818.85
8.1.200.0060.00317.23
8.1.190.0030.00617.23
8.1.180.0040.00418.10
8.1.170.0060.00318.56
8.1.160.0030.00521.84
8.1.150.0040.00418.79
8.1.140.0040.00417.37
8.1.130.0060.00017.85
8.1.120.0030.00317.46
8.1.110.0000.00717.25
8.1.100.0000.00717.42
8.1.90.0000.00717.41
8.1.80.0060.00317.28
8.1.70.0000.00817.33
8.1.60.0030.00617.39
8.1.50.0030.00617.36
8.1.40.0040.00417.34
8.1.30.0040.00417.57
8.1.20.0000.00817.47
8.1.10.0040.00417.39
8.1.00.0080.00017.29
8.0.300.0060.00320.13
8.0.290.0020.00516.75
8.0.280.0000.00718.46
8.0.270.0030.00317.30
8.0.260.0030.00317.23
8.0.250.0030.00316.83
8.0.240.0000.00816.83
8.0.230.0030.00316.91
8.0.220.0030.00316.74
8.0.210.0000.00716.86
8.0.200.0040.00416.91
8.0.190.0000.00716.88
8.0.180.0040.00416.82
8.0.170.0000.00816.84
8.0.160.0000.00816.88
8.0.150.0110.00016.71
8.0.140.0030.00416.66
8.0.130.0040.00413.24
8.0.120.0050.00316.82
8.0.110.0030.00616.70
8.0.100.0040.00416.64
8.0.90.0040.00416.65
8.0.80.0030.01216.70
8.0.70.0000.00716.68
8.0.60.0070.00016.82
8.0.50.0040.00416.88
8.0.30.0150.00717.03
8.0.20.0150.00717.40
8.0.10.0050.00316.80
8.0.00.0100.00816.62
7.4.330.0030.00315.04
7.4.320.0000.00616.48
7.4.300.0070.00016.42
7.4.290.0070.00016.46
7.4.280.0040.00416.41
7.4.270.0030.00316.48
7.4.260.0030.00316.40
7.4.250.0050.00216.49
7.4.240.0000.00716.45
7.4.230.0070.00016.26
7.4.220.0100.00716.48
7.4.210.0100.00416.46
7.4.200.0050.00516.51
7.4.160.0040.01316.41
7.4.150.0090.00917.40
7.4.140.0090.00917.86
7.4.130.0080.00916.51
7.4.120.0090.00916.46
7.4.110.0140.00316.37
7.4.100.0070.01016.55
7.4.90.0090.00916.30
7.4.80.0030.01619.39
7.4.70.0070.01116.45
7.4.60.0030.01516.50
7.4.50.0000.00516.25
7.4.40.0120.00616.50
7.4.30.0120.00316.45
7.4.00.0070.00714.63
7.3.330.0000.00512.86
7.3.320.0030.00312.97
7.3.310.0070.00016.26
7.3.300.0050.00216.07
7.3.290.0100.00316.12
7.3.280.0080.00816.12
7.3.270.0090.00917.40
7.3.260.0090.00916.46
7.3.250.0060.01316.29
7.3.240.0110.00816.43
7.3.230.0060.00916.39
7.3.210.0180.00616.47
7.3.200.0000.01719.39
7.3.190.0110.00516.35
7.3.180.0040.01216.50
7.3.170.0090.00616.41
7.3.160.0120.00416.38
7.3.120.0040.01114.76
7.3.10.0060.00616.66
7.3.00.0100.00016.59
7.2.330.0060.01216.52
7.2.320.0060.01116.55
7.2.310.0160.00716.28
7.2.300.0060.00916.25
7.2.290.0130.01016.55
7.2.130.0040.00416.85
7.2.120.0060.00616.57
7.2.110.0000.00916.93
7.2.100.0040.00816.46
7.2.90.0030.01016.50
7.2.80.0120.00016.63
7.2.70.0080.00816.89
7.2.60.0070.00816.88
7.2.50.0030.01416.89
7.2.40.0000.00916.76
7.2.30.0030.01416.98
7.2.20.0060.00616.78
7.2.10.0040.00816.77
7.2.00.0030.00817.93
7.1.250.0040.00415.56
7.1.200.0090.00315.84
7.1.100.0060.00617.61
7.1.70.0040.00417.06
7.1.60.0070.01719.11
7.1.50.0070.01016.90
7.1.00.0000.07722.25
7.0.200.0000.00716.61
7.0.140.0030.07321.95
7.0.60.0030.05319.94
7.0.50.0100.08317.88
7.0.40.0130.04320.03
7.0.30.0300.05320.18
7.0.20.0230.07020.13
7.0.10.0200.04320.21
7.0.00.0070.08720.16
5.6.280.0070.06321.04
5.6.210.0070.04320.50
5.6.200.0100.05318.23
5.6.190.0070.05020.56
5.6.180.0330.06720.39
5.6.170.0230.06020.38
5.6.160.0030.06020.48
5.6.150.0000.05018.17
5.6.140.0100.07318.17
5.6.130.0170.07018.21
5.6.120.0130.07320.98
5.6.110.0100.08021.08
5.6.100.0030.09020.98
5.6.90.0070.05721.01
5.6.80.0000.07020.49
5.6.70.0270.06720.36
5.5.350.0170.03720.40
5.5.340.0030.05017.96
5.5.330.0070.08020.37
5.5.320.0100.05320.37
5.5.310.0170.05320.38
5.5.300.0070.06718.00
5.5.290.0100.05317.92
5.5.280.0000.08720.63
5.5.270.0030.08720.63
5.5.260.0100.07720.73
5.5.250.0100.07720.57
5.5.240.0170.06720.27
5.4.450.0730.04319.46
5.4.440.0970.06319.48
5.4.430.0870.05719.24
5.4.420.0000.08319.52
5.4.410.0200.04718.96
5.4.400.0370.04718.50
5.4.390.0230.06018.61
5.4.380.0100.06018.68
5.4.370.0000.04318.61
5.4.360.0070.04018.74
5.4.350.0160.09211.97
5.4.340.0100.04211.97
5.4.320.0050.03712.45
5.4.310.0080.03712.45
5.4.300.0070.03612.45
5.4.290.0060.03912.45
5.4.280.0050.03712.35
5.4.270.0030.03912.34
5.4.260.0040.04512.34
5.4.250.0090.03512.35
5.4.240.0060.03912.34
5.4.230.0080.03612.34
5.4.220.0090.03312.34
5.4.210.0060.03612.34
5.4.200.0060.04812.34
5.4.190.0080.04312.34
5.4.180.0100.04012.34
5.4.170.0080.04012.35
5.4.160.0080.03512.34
5.4.150.0050.03912.34
5.4.140.0100.03412.02
5.4.130.0060.03512.01
5.4.120.0110.02911.97
5.4.110.0070.03411.96
5.4.100.0040.03811.96
5.4.90.0060.03711.96
5.4.80.0060.03611.96
5.4.70.0070.03311.96
5.4.60.0060.03511.96
5.4.50.0070.03511.96
5.4.40.0050.03511.95
5.4.30.0060.03511.94
5.4.20.0040.03711.95
5.4.10.0070.03411.95
5.4.00.0030.03911.44
5.3.290.0060.03912.80
5.3.280.0060.03812.71
5.3.270.0080.03712.73
5.3.260.0080.04112.72
5.3.250.0070.04012.72
5.3.240.0040.04012.72
5.3.230.0090.03712.71
5.3.220.0060.03812.68
5.3.210.0050.04012.68
5.3.200.0060.03712.68
5.3.190.0030.03912.68
5.3.180.0040.03812.67
5.3.170.0060.03712.67
5.3.160.0080.03412.67
5.3.150.0070.03612.67
5.3.140.0080.03412.66
5.3.130.0070.03812.66
5.3.120.0050.04212.66
5.3.110.0100.03512.66
5.3.100.0120.03112.12
5.3.90.0090.03412.08
5.3.80.0060.03612.08
5.3.70.0050.03712.07
5.3.60.0050.03712.07
5.3.50.0100.03212.00
5.3.40.0090.03412.00
5.3.30.0070.03411.94
5.3.20.0080.03411.71
5.3.10.0090.03211.69
5.3.00.0040.03811.68
5.2.170.0060.0299.18
5.2.160.0070.0269.18
5.2.150.0020.0339.18
5.2.140.0080.0279.18
5.2.130.0060.0279.13
5.2.120.0040.0299.13
5.2.110.0040.0309.14
5.2.100.0070.0319.14
5.2.90.0050.0319.14
5.2.80.0030.0329.13
5.2.70.0040.0309.13
5.2.60.0040.0309.08
5.2.50.0040.0319.05
5.2.40.0030.0309.03
5.2.30.0050.0309.01
5.2.20.0070.0268.99
5.2.10.0070.0268.92
5.2.00.0000.0348.77
5.1.60.0050.0238.06
5.1.50.0040.0248.05
5.1.40.0050.0238.04
5.1.30.0020.0298.39
5.1.20.0040.0278.41
5.1.10.0040.0258.13
5.1.00.0030.0268.14
5.0.50.0030.0256.61
5.0.40.0030.0196.46
5.0.30.0010.0336.28
5.0.20.0050.0256.25
5.0.10.0030.0286.23
5.0.00.0110.0296.23
4.4.90.0020.0164.78
4.4.80.0020.0154.75
4.4.70.0060.0184.75
4.4.60.0030.0154.75
4.4.50.0020.0164.77
4.4.40.0030.0254.71
4.4.30.0030.0164.76
4.4.20.0010.0174.84
4.4.10.0020.0164.85
4.4.00.0030.0244.76
4.3.110.0020.0164.66
4.3.100.0010.0164.67
4.3.90.0030.0144.63
4.3.80.0020.0254.59
4.3.70.0010.0174.63
4.3.60.0020.0164.63
4.3.50.0020.0164.63
4.3.40.0000.0274.54
4.3.30.0020.0163.28
4.3.20.0010.0173.25
4.3.10.0020.0163.21
4.3.00.0200.01715.25

preferences:
37.53 ms | 400 KiB | 5 Q