3v4l.org

run code in 300+ PHP versions simultaneously
<?php function num2alpha($n) { for($r = ""; $n >= 0; $n = intval($n / 26) - 1) $r = chr($n%26 + 0x41) . $r; return $r; } echo num2alpha(0);

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)
8.3.60.0070.01418.29
8.3.50.0140.00721.12
8.3.40.0110.00618.79
8.3.30.0000.01419.00
8.3.20.0070.00020.29
8.3.10.0040.00423.66
8.3.00.0040.00419.25
8.2.180.0060.01316.32
8.2.170.0140.00022.96
8.2.160.0100.00720.34
8.2.150.0080.00024.18
8.2.140.0000.00924.66
8.2.130.0070.00026.16
8.2.120.0150.00422.23
8.2.110.0100.00022.06
8.2.100.0040.00817.75
8.2.90.0000.00719.20
8.2.80.0000.00917.97
8.2.70.0080.00017.63
8.2.60.0000.00818.04
8.2.50.0050.00518.07
8.2.40.0050.00320.01
8.2.30.0090.00018.10
8.2.20.0040.00417.61
8.2.10.0070.00018.02
8.2.00.0030.00517.75
8.1.280.0070.01025.92
8.1.270.0080.00023.75
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0040.00423.83
8.1.230.0090.00319.21
8.1.220.0060.00317.74
8.1.210.0000.00818.77
8.1.200.0030.00617.35
8.1.190.0040.00417.23
8.1.180.0000.00718.10
8.1.170.0040.00418.59
8.1.160.0050.00222.07
8.1.150.0000.00718.88
8.1.140.0030.00517.45
8.1.130.0030.00517.82
8.1.120.0000.00717.46
8.1.110.0000.00817.48
8.1.100.0040.00417.34
8.1.90.0070.00017.36
8.1.80.0000.00717.39
8.1.70.0000.00717.40
8.1.60.0000.00817.48
8.1.50.0060.00317.51
8.1.40.0000.00717.39
8.1.30.0030.00517.58
8.1.20.0000.00717.53
8.1.10.0060.00317.48
8.1.00.0040.00417.34
8.0.300.0040.00418.77
8.0.290.0000.00716.75
8.0.280.0000.00718.35
8.0.270.0030.00317.25
8.0.260.0000.00617.16
8.0.250.0070.00016.96
8.0.240.0000.00716.92
8.0.230.0090.00017.00
8.0.220.0030.00316.91
8.0.210.0080.00016.87
8.0.200.0000.00717.02
8.0.190.0030.00516.88
8.0.180.0040.00516.81
8.0.170.0040.00416.93
8.0.160.0040.00416.98
8.0.150.0030.00416.79
8.0.140.0000.00716.76
8.0.130.0000.00513.28
8.0.120.0080.00016.86
8.0.110.0040.00416.82
8.0.100.0040.00416.75
8.0.90.0000.00716.95
8.0.80.0040.01416.95
8.0.70.0040.00416.76
8.0.60.0040.00416.68
8.0.50.0030.00516.86
8.0.30.0150.00616.99
8.0.20.0150.00917.40
8.0.10.0000.00716.96
8.0.00.0070.01016.75
7.4.330.0050.00015.02
7.4.320.0080.00016.61
7.4.300.0030.00316.64
7.4.290.0030.00316.45
7.4.280.0030.00516.50
7.4.270.0030.00316.53
7.4.260.0070.00016.60
7.4.250.0040.00416.36
7.4.240.0030.00416.47
7.4.230.0030.00316.51
7.4.220.0060.01316.51
7.4.210.0060.00916.61
7.4.200.0050.00216.49
7.4.160.0080.00816.68
7.4.150.0110.00917.40
7.4.140.0200.01617.86
7.4.130.0140.00616.56
7.4.120.0130.00416.49
7.4.110.0110.00716.47
7.4.100.0130.00316.69
7.4.90.0140.00316.48
7.4.80.0030.01619.39
7.4.70.0030.01316.59
7.4.60.0130.00316.42
7.4.50.0060.00316.36
7.4.40.0130.01016.64
7.4.30.0090.01016.53
7.4.00.0100.00315.11
7.3.330.0000.00613.36
7.3.320.0000.00513.34
7.3.310.0030.00316.39
7.3.300.0000.00616.19
7.3.290.0090.00616.31
7.3.280.0110.00616.39
7.3.270.0090.01017.40
7.3.260.0080.00916.29
7.3.250.0070.01116.57
7.3.240.0070.01016.49
7.3.230.0110.00716.39
7.3.210.0100.00616.21
7.3.200.0090.00619.39
7.3.190.0060.01216.40
7.3.180.0090.00616.41
7.3.170.0070.01016.30
7.3.160.0030.01316.65
7.2.330.0040.01316.80
7.2.320.0120.01216.50
7.2.310.0100.01016.75
7.2.300.0060.00916.60
7.2.290.0060.01116.38
7.2.00.0090.00619.33
7.1.100.0000.01418.13
7.1.70.0000.00817.33
7.1.60.0030.00919.11
7.1.50.0090.01516.59
7.1.00.0000.07722.51
7.0.200.0030.00516.70
7.0.140.0100.07022.07
7.0.60.0030.08720.00
7.0.50.0130.08017.83
7.0.40.0070.05320.10
7.0.30.0470.04320.16
7.0.20.0400.04720.15
7.0.10.0070.05720.26
7.0.00.0100.08320.22
5.6.280.0070.07321.05
5.6.210.0070.05320.55
5.6.200.0030.08318.16
5.6.190.0070.04020.48
5.6.180.0130.07020.48
5.6.170.0270.06720.47
5.6.160.0100.04320.45
5.6.150.0070.06718.12
5.6.140.0170.06718.16
5.6.130.0170.07318.12
5.6.120.0130.07720.96
5.6.110.0030.08021.00
5.6.100.0130.07321.03
5.6.90.0130.05021.11
5.6.80.0200.06720.41
5.6.70.4470.04020.52
5.5.350.0100.03320.41
5.5.340.0070.04018.02
5.5.330.0030.04720.27
5.5.320.0270.03720.25
5.5.310.0200.04320.27
5.5.300.0130.04718.07
5.5.290.0030.04018.08
5.5.280.0030.06020.68
5.5.270.0000.04320.84
5.5.260.0130.08320.89
5.5.250.0100.07320.59
5.5.240.0300.06720.29
5.4.450.0670.06719.57
5.4.440.0830.07019.59
5.4.430.0970.05319.60
5.4.420.0700.00019.52
5.4.410.0830.00019.28
5.4.400.0630.00019.33
5.4.390.0630.00019.04
5.4.380.0800.00019.20
5.4.370.0670.00019.11
5.4.360.0630.00019.02
5.4.350.0670.00019.02
5.4.340.0030.03712.01
5.4.320.0070.03512.51
5.4.310.0100.03612.50
5.4.300.0070.03512.51
5.4.290.0130.04312.50
5.4.280.0120.04712.40
5.4.270.0100.03512.40
5.4.260.0060.03912.39
5.4.250.0060.03812.40
5.4.240.0090.04912.40
5.4.230.0090.05212.39
5.4.220.0070.03812.39
5.4.210.0080.03412.39
5.4.200.0070.03712.39
5.4.190.0060.03612.39
5.4.180.0090.03712.38
5.4.170.0070.03512.39
5.4.160.0060.04212.39
5.4.150.0090.05412.39
5.4.140.0080.03412.07
5.4.130.0070.03312.06
5.4.120.0050.03512.02
5.4.110.0080.03412.01
5.4.100.0100.03212.01
5.4.90.0050.04012.02
5.4.80.0070.04212.01
5.4.70.0110.03012.01
5.4.60.0070.03612.01
5.4.50.0110.03012.01
5.4.40.0090.03112.00
5.4.30.0040.03812.00
5.4.20.0070.03811.99
5.4.10.0070.03312.00
5.4.00.0030.04111.48
5.3.290.0040.04112.80
5.3.280.0060.03912.71
5.3.270.0070.03912.72
5.3.260.0090.03612.72
5.3.250.0080.03612.72
5.3.240.0080.03612.72
5.3.230.0030.04112.71
5.3.220.0060.03712.68
5.3.210.0070.03812.68
5.3.200.0080.03512.68
5.3.190.0040.04012.68
5.3.180.0080.03512.68
5.3.170.0080.03612.67
5.3.160.0050.03912.67
5.3.150.0100.03512.67
5.3.140.0050.03912.66
5.3.130.0080.03812.66
5.3.120.0100.03612.66
5.3.110.0090.04212.66
5.3.100.0060.03812.12
5.3.90.0090.03412.10
5.3.80.0060.03712.09
5.3.70.0080.03512.09
5.3.60.0080.03412.07
5.3.50.0050.03712.02
5.3.40.0080.03512.04
5.3.30.0050.03711.97
5.3.20.0060.03511.77
5.3.10.0040.03611.73
5.3.00.0060.04011.71
5.2.170.0070.0419.21
5.2.160.0050.0409.21
5.2.150.0030.0439.21
5.2.140.0160.0589.21
5.2.130.0130.0339.17
5.2.120.0070.0379.17
5.2.110.0050.0339.18
5.2.100.0060.0279.18
5.2.90.0020.0329.17
5.2.80.0040.0319.16
5.2.70.0070.0339.17
5.2.60.0060.0359.12
5.2.50.0040.0309.09
5.2.40.0030.0309.07
5.2.30.0060.0289.04
5.2.20.0050.0289.03
5.2.10.0040.0298.94
5.2.00.0050.0298.80
5.1.60.0060.0238.08
5.1.50.0040.0278.08
5.1.40.0070.0298.06
5.1.30.0050.0298.41
5.1.20.0060.0278.43
5.1.10.0070.0338.15
5.1.00.0020.0288.16
5.0.50.0070.0226.63
5.0.40.0010.0226.50
5.0.30.0040.0316.31
5.0.20.0040.0186.28
5.0.10.0050.0226.25
5.0.00.0050.0346.25
4.4.90.0060.0174.78
4.4.80.0050.0194.75
4.4.70.0020.0194.75
4.4.60.0040.0144.75
4.4.50.0040.0144.77
4.4.40.0030.0264.71
4.4.30.0030.0154.76
4.4.20.0040.0164.85
4.4.10.0020.0164.85
4.4.00.0020.0294.76
4.3.110.0050.0194.67
4.3.100.0050.0124.66
4.3.90.0060.0134.63
4.3.80.0040.0264.58
4.3.70.0040.0144.63
4.3.60.0060.0234.63
4.3.50.0050.0214.63
4.3.40.0020.0324.54
4.3.30.0020.0163.30
4.3.20.0020.0173.28
4.3.10.0000.0183.24
4.3.00.0170.0236.64

preferences:
42.35 ms | 401 KiB | 5 Q