3v4l.org

run code in 300+ PHP versions simultaneously
<?php function roman_number($N) { $c = 'IVXLCDM'; for ($a = 5, $b = $s = ''; $N; $b++, $a ^= 7) for ($o = $N % $a, $N = $N / $a ^ 0; $o--; $s = $c[$o > 2 ? $b + $N - ($N &= -2) + $o = 1 : $b] . $s) ; return $s; } echo roman_number(542);

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)
8.3.60.0060.00918.56
8.3.50.0100.00921.16
8.3.40.0120.00318.84
8.3.30.0100.00319.00
8.3.20.0040.00420.16
8.3.10.0040.01120.58
8.3.00.0030.00717.46
8.2.180.0110.00716.88
8.2.170.0130.00622.96
8.2.160.0040.01120.32
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0080.00026.16
8.2.120.0040.00422.18
8.2.110.0030.00622.16
8.2.100.0110.00018.03
8.2.90.0090.00019.17
8.2.80.0040.00417.97
8.2.70.0060.00617.38
8.2.60.0090.00517.68
8.2.50.0060.00318.07
8.2.40.0080.00017.94
8.2.30.0000.00719.36
8.2.20.0070.00017.79
8.2.10.0000.00817.99
8.2.00.0000.00717.76
8.1.280.0140.00325.92
8.1.270.0050.00322.06
8.1.260.0040.00426.35
8.1.250.0070.00028.09
8.1.240.0030.00723.96
8.1.230.0000.01019.10
8.1.220.0050.00317.74
8.1.210.0060.00318.77
8.1.200.0060.00317.23
8.1.190.0000.00917.35
8.1.180.0080.00018.10
8.1.170.0030.00618.55
8.1.160.0040.00422.02
8.1.150.0040.00418.92
8.1.140.0000.00717.48
8.1.130.0000.00817.90
8.1.120.0000.00717.30
8.1.110.0000.00717.42
8.1.100.0030.00317.39
8.1.90.0000.00717.38
8.1.80.0000.00717.32
8.1.70.0000.00717.27
8.1.60.0060.00317.55
8.1.50.0090.00017.51
8.1.40.0000.01017.54
8.1.30.0030.00517.61
8.1.20.0000.00817.60
8.1.10.0070.00017.47
8.1.00.0080.00017.55
8.0.300.0000.00718.77
8.0.290.0040.00416.75
8.0.280.0040.00418.33
8.0.270.0030.00317.13
8.0.260.0030.00317.25
8.0.250.0000.00816.98
8.0.240.0080.00017.03
8.0.230.0030.00317.00
8.0.220.0000.00716.82
8.0.210.0040.00416.80
8.0.200.0030.00316.99
8.0.190.0080.00016.94
8.0.180.0070.00016.99
8.0.170.0020.00516.86
8.0.160.0060.00316.89
8.0.150.0000.00816.93
8.0.140.0040.00416.96
8.0.130.0050.00013.39
8.0.120.0000.00716.80
8.0.110.0000.00916.85
8.0.100.0000.00716.96
8.0.90.0000.00816.95
8.0.80.0100.01016.91
8.0.70.0030.00516.95
8.0.60.0000.00716.98
8.0.50.0040.00416.74
8.0.30.0110.00717.15
8.0.20.0090.01017.40
8.0.10.0040.00417.13
8.0.00.0080.00816.84
7.4.330.0030.00315.00
7.4.320.0070.00016.63
7.4.300.0030.00516.55
7.4.290.0000.00716.48
7.4.280.0060.00016.49
7.4.270.0000.00716.46
7.4.260.0060.00316.50
7.4.250.0070.00016.47
7.4.240.0020.00616.50
7.4.230.0000.00716.29
7.4.220.0130.01316.41
7.4.210.0140.00016.61
7.4.200.0030.00316.66
7.4.160.0060.00916.42
7.4.150.0040.01517.40
7.4.140.0090.01117.86
7.4.130.0130.00316.61
7.4.120.0130.00416.53
7.4.110.0110.00616.61
7.4.100.0070.01116.41
7.4.90.0100.00716.48
7.4.80.0090.00819.39
7.4.70.0030.01316.50
7.4.60.0130.00316.58
7.4.50.0050.00316.57
7.4.40.0110.00516.46
7.4.30.0130.00316.57
7.4.00.0060.01015.08
7.3.330.0000.00613.29
7.3.320.0050.00013.34
7.3.310.0000.00716.32
7.3.300.0050.00216.34
7.3.290.0070.01416.40
7.3.280.0050.00916.41
7.3.270.0100.00717.40
7.3.260.0120.01216.41
7.3.250.0090.01216.40
7.3.240.0180.00316.60
7.3.230.0030.01316.68
7.3.210.0100.00716.45
7.3.200.0090.00619.39
7.3.190.0160.00616.34
7.3.180.0170.00016.37
7.3.170.0030.01316.72
7.3.160.0060.00916.53
7.3.120.0060.01014.85
7.3.110.0110.00614.81
7.3.100.0020.01314.81
7.3.90.0030.01014.90
7.3.80.0060.00614.88
7.3.70.0050.01014.79
7.3.60.0080.00314.92
7.3.50.0050.00614.83
7.3.40.0050.00514.85
7.3.30.0060.00814.69
7.3.20.0070.00616.68
7.3.10.0030.01216.69
7.3.00.0070.00616.70
7.2.330.0070.01316.79
7.2.320.0160.00316.73
7.2.310.0060.01216.62
7.2.300.0050.01116.52
7.2.290.0120.00316.84
7.2.250.0050.01315.11
7.2.240.0020.01615.27
7.2.230.0100.00715.12
7.2.220.0050.00815.02
7.2.210.0030.01015.25
7.2.200.0050.00515.14
7.2.190.0080.00815.12
7.2.180.0070.00714.93
7.2.170.0060.00614.88
7.2.00.0070.01419.38
7.1.330.0040.00915.85
7.1.320.0060.00615.74
7.1.310.0080.00615.78
7.1.300.0050.00615.47
7.1.290.0050.00615.56
7.1.280.0090.00415.79
7.1.270.0100.00515.85
7.1.260.0020.01115.73
7.1.100.0040.00817.96
7.1.70.0000.00717.26
7.1.60.0110.01419.12
7.1.50.0060.01616.92
7.1.00.0030.07722.45
7.0.200.0000.00816.73
7.0.140.0100.06721.95
7.0.60.0100.08319.82
7.0.50.0070.06017.73
7.0.40.0100.08320.05
7.0.30.0300.06720.06
7.0.20.0300.05320.23
7.0.10.0030.05720.45
7.0.00.0070.08320.20
5.6.280.0100.06721.06
5.6.210.0100.05020.73
5.6.200.0030.09018.16
5.6.190.0070.08020.77
5.6.180.0500.07020.47
5.6.170.0330.04720.50
5.6.160.0100.08020.54
5.6.150.0100.06718.29
5.6.140.0000.06018.15
5.6.130.0070.03718.11
5.6.120.0000.05320.76
5.6.110.0100.05321.14
5.6.100.0100.08321.09
5.6.90.0130.05320.98
5.6.80.0100.07720.41
5.5.350.0130.03320.32
5.5.340.0070.05018.05
5.5.330.0070.03720.19
5.5.320.0130.04720.38
5.5.310.0270.06320.27
5.5.300.0070.03717.97
5.5.290.0130.07717.99
5.5.280.0170.07320.94
5.5.270.0070.04320.86
5.5.260.0100.08320.73
5.5.250.0130.07320.66
5.5.240.0170.07020.24
5.4.450.0430.04319.55
5.4.440.0700.03019.45
5.4.430.0470.04319.46
5.4.420.0600.04719.54
5.4.410.0270.04719.14
5.4.400.0430.04319.00
5.4.390.0230.04019.09
5.4.380.0530.06018.51
5.4.370.0270.06318.72
5.4.360.0230.05318.79
5.4.350.0430.04018.74
5.4.340.0270.05718.74
5.4.320.0040.03712.50
5.4.310.0040.03812.50
5.4.300.0050.03712.51
5.4.290.0040.04112.50
5.4.280.0070.03512.39
5.4.270.0080.03312.40
5.4.260.0050.03812.40
5.4.250.0030.04012.39
5.4.240.0040.04212.40
5.4.230.0080.03812.39
5.4.220.0070.03512.39
5.4.210.0100.03312.39
5.4.200.0060.03712.39
5.4.190.0050.03612.39
5.4.180.0050.03812.39
5.4.170.0070.03612.40
5.4.160.0090.03212.39
5.4.150.0070.03512.39
5.4.140.0050.03712.07
5.4.130.0050.03812.05
5.4.120.0020.03912.02
5.4.110.0110.03512.02
5.4.100.0050.03612.01
5.4.90.0090.03412.01
5.4.80.0080.04212.01
5.4.70.0070.03612.01
5.4.60.0060.03512.01
5.4.50.0080.03312.00
5.4.40.0070.03812.00
5.4.30.0110.03411.99
5.4.20.0110.03211.99
5.4.10.0050.03512.00
5.4.00.0030.03811.48
5.3.290.0060.04712.80
5.3.280.0100.04512.71
5.3.270.0030.04212.72
5.3.260.0040.04112.72
5.3.250.0070.03612.72
5.3.240.0070.04012.72
5.3.230.0070.04112.71
5.3.220.0090.03612.68
5.3.210.0060.04612.68
5.3.200.0090.04012.68
5.3.190.0050.03812.68
5.3.180.0100.03312.68
5.3.170.0040.03912.67
5.3.160.0040.03712.67
5.3.150.0080.03712.67
5.3.140.0070.03512.66
5.3.130.0050.03912.66
5.3.120.0060.03712.66
5.3.110.0040.04012.66
5.3.100.0070.03512.11
5.3.90.0050.03712.10
5.3.80.0070.03512.09
5.3.70.0010.04112.09
5.3.60.0040.03712.07
5.3.50.0030.03812.02
5.3.40.0020.04012.02
5.3.30.0070.03411.98
5.3.20.0070.03411.76
5.3.10.0020.03811.73
5.3.00.0050.03611.72
5.2.170.0050.0339.21
5.2.160.0050.0319.21
5.2.150.0050.0309.21
5.2.140.0030.0359.21
5.2.130.0040.0299.17
5.2.120.0070.0279.17
5.2.110.0020.0319.18
5.2.100.0060.0289.17
5.2.90.0050.0339.18
5.2.80.0030.0329.17
5.2.70.0060.0319.17
5.2.60.0100.0269.13
5.2.50.0060.0329.09
5.2.40.0060.0359.07
5.2.30.0050.0299.05
5.2.20.0060.0289.04
5.2.10.0050.0288.94
5.2.00.0060.0278.80
5.1.60.0030.0248.09
5.1.50.0030.0308.08
5.1.40.0050.0238.06
5.1.30.0040.0318.41
5.1.20.0030.0278.43
5.1.10.0030.0268.16
5.1.00.0060.0238.16
5.0.50.0040.0196.63
5.0.40.0040.0196.50
5.0.30.0020.0346.31
5.0.20.0010.0216.27
5.0.10.0030.0206.25
5.0.00.0040.0296.25
4.4.90.0030.0144.78
4.4.80.0020.0154.75
4.4.70.0020.0164.76
4.4.60.0030.0144.75
4.4.50.0030.0144.77
4.4.40.0030.0254.71
4.4.30.0010.0164.76
4.4.20.0020.0154.84
4.4.10.0020.0164.85
4.4.00.0010.0264.76
4.3.110.0060.0124.66
4.3.100.0010.0174.66
4.3.90.0010.0174.63
4.3.80.0040.0274.58
4.3.70.0020.0214.63
4.3.60.0050.0124.63
4.3.50.0030.0154.63
4.3.40.0030.0234.54
4.3.30.0030.0153.30
4.3.20.0010.0173.27
4.3.10.0040.0143.24
4.3.00.0030.01716.73

preferences:
43.78 ms | 401 KiB | 5 Q