3v4l.org

run code in 300+ PHP versions simultaneously
<?php print $rest = substr("abcdef", -1);

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)
8.3.40.0150.00018.84
8.3.30.0070.00718.95
8.3.20.0050.00220.16
8.3.10.0050.00323.48
8.3.00.0080.00019.21
8.2.170.0110.00722.96
8.2.160.0070.00720.52
8.2.150.0050.00224.18
8.2.140.0070.00024.66
8.2.130.0080.00026.16
8.2.120.0040.00421.08
8.2.110.0090.00020.21
8.2.100.0060.00618.03
8.2.90.0000.00719.05
8.2.80.0080.00017.97
8.2.70.0050.00317.63
8.2.60.0040.00418.03
8.2.50.0080.00018.07
8.2.40.0040.00418.09
8.2.30.0040.00417.98
8.2.20.0040.00417.68
8.2.10.0040.00417.99
8.2.00.0050.00317.50
8.1.270.0020.00523.96
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0060.00323.73
8.1.230.0110.00018.97
8.1.220.0040.00417.74
8.1.210.0080.00018.77
8.1.200.0070.00317.23
8.1.190.0030.00617.13
8.1.180.0000.00818.10
8.1.170.0040.00418.56
8.1.160.0000.00821.84
8.1.150.0000.00818.77
8.1.140.0040.00417.38
8.1.130.0070.00017.72
8.1.120.0000.00717.39
8.1.110.0090.00017.42
8.1.100.0040.00417.37
8.1.90.0070.00017.41
8.1.80.0050.00317.31
8.1.70.0030.00317.26
8.1.60.0050.00317.47
8.1.50.0040.00417.46
8.1.40.0050.00217.49
8.1.30.0040.00417.50
8.1.20.0040.00417.49
8.1.10.0070.00017.40
8.1.00.0050.00317.45
8.0.300.0040.00418.77
8.0.290.0040.00416.75
8.0.280.0040.00418.43
8.0.270.0040.00417.30
8.0.260.0000.00617.25
8.0.250.0000.00716.84
8.0.240.0000.00716.96
8.0.230.0040.00416.84
8.0.220.0030.00316.88
8.0.210.0070.00016.78
8.0.200.0030.00316.87
8.0.190.0040.00416.88
8.0.180.0000.00716.82
8.0.170.0030.00516.79
8.0.160.0060.00316.82
8.0.150.0040.00416.79
8.0.140.0050.00216.74
8.0.130.0030.00313.21
8.0.120.0030.00616.68
8.0.110.0040.00416.64
8.0.100.0040.00416.77
8.0.90.0000.00716.66
8.0.80.0070.00716.80
8.0.70.0070.00016.70
8.0.60.0000.00716.86
8.0.50.0050.00216.88
8.0.30.0110.00917.12
8.0.20.0090.01217.40
8.0.10.0050.00216.93
8.0.00.0150.00216.83
7.4.330.0000.00615.00
7.4.320.0060.00016.35
7.4.300.0000.00616.41
7.4.290.0070.00016.61
7.4.280.0040.00416.52
7.4.270.0000.00816.45
7.4.260.0070.00016.41
7.4.250.0070.00016.47
7.4.240.0040.00316.48
7.4.230.0030.00316.40
7.4.220.0130.00316.42
7.4.210.0110.00416.46
7.4.200.0030.00316.34
7.4.160.0120.00916.30
7.4.150.0070.01417.40
7.4.140.0080.00917.86
7.4.130.0080.01016.44
7.4.120.0080.00916.36
7.4.110.0090.00616.48
7.4.100.0140.00316.51
7.4.90.0120.00616.31
7.4.80.0100.00719.39
7.4.70.0060.01016.52
7.4.60.0060.00916.38
7.4.50.0050.00316.42
7.4.40.0080.00816.53
7.4.30.0070.01116.44
7.4.00.0120.00314.92
7.3.330.0030.00312.96
7.3.320.0020.00212.87
7.3.310.0060.00016.17
7.3.300.0040.00416.17
7.3.290.0030.01216.09
7.3.280.0090.00616.11
7.3.270.0100.00717.40
7.3.260.0070.01016.29
7.3.250.0080.01016.27
7.3.240.0100.00616.18
7.3.230.0090.00916.39
7.3.210.0140.00416.21
7.3.200.0060.00919.39
7.3.190.0030.01316.32
7.3.180.0090.01116.34
7.3.170.0090.00616.30
7.3.160.0060.00916.20
7.3.10.0030.00916.39
7.3.00.0040.01016.22
7.2.330.0110.01116.38
7.2.320.0120.00916.46
7.2.310.0080.00816.48
7.2.300.0070.01016.59
7.2.290.0100.00616.25
7.2.130.0050.00716.83
7.2.120.0020.01016.94
7.2.110.0060.00616.94
7.2.100.0130.00316.76
7.2.90.0070.00516.96
7.2.80.0060.00716.76
7.2.70.0030.01016.91
7.2.60.0060.00816.71
7.2.50.0060.00816.82
7.2.40.0110.00416.89
7.2.30.0070.00616.83
7.2.20.0020.01216.81
7.2.10.0030.00717.04
7.2.00.0050.01116.81
7.1.250.0080.00615.53
7.1.200.0040.00715.66
7.1.70.0030.00916.91
7.1.60.0130.01319.46
7.1.50.0060.00816.58
7.1.00.0000.09322.51
7.0.200.0040.00416.57
7.0.140.0000.07722.00
7.0.60.0030.04019.92
7.0.50.0070.05017.88
7.0.40.0100.08320.24
7.0.30.0500.05720.04
7.0.20.0270.04020.00
7.0.10.0070.06020.00
7.0.00.0000.06020.19
5.6.280.0000.07720.85
5.6.210.0130.07720.50
5.6.200.0070.03718.13
5.6.190.0070.04720.41
5.6.180.0330.06720.77
5.6.170.0370.06720.50
5.6.160.0030.09020.47
5.6.150.0070.08318.11
5.6.140.0030.08318.22
5.6.130.0100.07718.17
5.6.120.0170.07321.01
5.6.110.0000.07320.97
5.6.100.0100.08320.99
5.6.90.0030.09020.98
5.6.80.0030.06720.35
5.6.70.3370.03720.39
5.5.350.0130.04020.37
5.5.340.0070.08018.02
5.5.330.0100.07320.47
5.5.320.0000.05020.21
5.5.310.0230.08320.28
5.5.300.0130.07318.02
5.5.290.0130.07717.93
5.5.280.0130.07720.79
5.5.270.0070.05020.75
5.5.260.0100.06720.79
5.5.250.0030.04020.54
5.5.240.0230.08320.34
5.4.450.0470.03319.41
5.4.440.0200.04319.57
5.4.430.0500.03019.41
5.4.420.0170.04719.57
5.4.410.0330.04719.25
5.4.400.0470.03319.11
5.4.390.0230.04318.89
5.4.380.0330.05318.49
5.4.370.0400.05018.62
5.4.360.0630.06018.58
5.4.350.0370.07018.49
5.4.340.0370.06318.76
5.4.320.0050.03712.45
5.4.310.0070.03812.45
5.4.300.0100.04712.45
5.4.290.0070.03812.45
5.4.280.0090.04012.34
5.4.270.0110.03612.34
5.4.260.0050.04112.34
5.4.250.0060.03812.34
5.4.240.0070.03912.34
5.4.230.0080.03712.34
5.4.220.0060.03512.34
5.4.210.0100.03212.34
5.4.200.0070.03812.34
5.4.190.0050.03712.34
5.4.180.0050.03612.33
5.4.170.0070.03412.35
5.4.160.0040.04912.34
5.4.150.0030.03712.34
5.4.140.0050.04812.02
5.4.130.0050.03412.01
5.4.120.0030.03711.97
5.4.110.0050.03611.96
5.4.100.0050.03411.96
5.4.90.0050.03811.96
5.4.80.0070.03511.96
5.4.70.0060.03411.96
5.4.60.0050.03411.96
5.4.50.0050.04511.96
5.4.40.0080.03911.95
5.4.30.0060.03411.95
5.4.20.0030.03611.95
5.4.10.0060.03911.95
5.4.00.0050.03611.43
5.3.290.0050.04812.80
5.3.280.0070.04212.71
5.3.270.0050.04512.72
5.3.260.0090.04112.72
5.3.250.0080.04012.72
5.3.240.0050.03912.72
5.3.230.0040.03812.71
5.3.220.0070.03512.68
5.3.210.0080.03512.68
5.3.200.0040.03712.68
5.3.190.0090.03312.68
5.3.180.0100.03112.67
5.3.170.0060.03612.66
5.3.160.0050.03912.67
5.3.150.0060.03512.67
5.3.140.0050.03512.66
5.3.130.0060.03612.66
5.3.120.0050.04412.65
5.3.110.0060.03712.66
5.3.100.0110.03612.12
5.3.90.0030.04312.08
5.3.80.0050.03612.07
5.3.70.0050.03812.08
5.3.60.0030.03712.06
5.3.50.0050.04612.00
5.3.40.0120.03012.00
5.3.30.0050.03511.94
5.3.20.0050.03611.71
5.3.10.0050.03511.69
5.3.00.0060.03511.67
5.2.170.0030.0319.18
5.2.160.0030.0309.18
5.2.150.0060.0289.18
5.2.140.0030.0319.18
5.2.130.0030.0309.14
5.2.120.0020.0309.14
5.2.110.0040.0309.14
5.2.100.0050.0349.13
5.2.90.0030.0299.13
5.2.80.0070.0379.13
5.2.70.0050.0399.13
5.2.60.0090.0369.08
5.2.50.0130.0249.05
5.2.40.0030.0369.03
5.2.30.0020.0319.01
5.2.20.0060.0349.00
5.2.10.0040.0278.92
5.2.00.0020.0318.77
5.1.60.0030.0328.06
5.1.50.0030.0248.05
5.1.40.0040.0248.04
5.1.30.0020.0338.39
5.1.20.0010.0288.41
5.1.10.0050.0248.14
5.1.00.0050.0238.13
5.0.50.0060.0236.61
5.0.40.0050.0236.47
5.0.30.0030.0326.28
5.0.20.0020.0206.25
5.0.10.0040.0196.23
5.0.00.0030.0316.22
4.4.90.0020.0164.78
4.4.80.0070.0314.76
4.4.70.0020.0164.76
4.4.60.0030.0194.75
4.4.50.0030.0144.77
4.4.40.0030.0244.71
4.4.30.0030.0214.76
4.4.20.0010.0164.85
4.4.10.0030.0154.85
4.4.00.0000.0274.76
4.3.110.0050.0164.67
4.3.100.0020.0204.66
4.3.90.0030.0134.64
4.3.80.0020.0244.59
4.3.70.0020.0144.63
4.3.60.0020.0154.63
4.3.50.0020.0164.63
4.3.40.0000.0264.53
4.3.30.0030.0143.28
4.3.20.0050.0163.26
4.3.10.0040.0293.21
4.3.00.0000.01718.29

preferences:
43.4 ms | 400 KiB | 5 Q