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) || 0] . $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)
8.3.40.0060.00918.63
8.3.30.0030.01019.22
8.3.20.0080.00020.34
8.3.10.0040.00420.65
8.3.00.0070.00317.63
8.2.170.0140.00322.96
8.2.160.0070.00720.39
8.2.150.0000.00824.18
8.2.140.0110.00424.66
8.2.130.0050.00226.16
8.2.120.0070.00722.09
8.2.110.0030.00622.17
8.2.100.0090.00318.03
8.2.90.0090.00019.21
8.2.80.0030.00617.97
8.2.70.0030.00617.63
8.2.60.0060.00617.93
8.2.50.0030.00618.07
8.2.40.0090.00018.31
8.2.30.0070.00019.30
8.2.20.0000.00817.72
8.2.10.0030.00518.18
8.2.00.0000.00717.67
8.1.270.0040.00422.20
8.1.260.0070.00026.35
8.1.250.0060.00328.09
8.1.240.0000.00922.07
8.1.230.0040.00819.09
8.1.220.0030.00517.74
8.1.210.0000.00918.77
8.1.200.0030.00617.23
8.1.190.0050.00317.23
8.1.180.0090.00018.10
8.1.170.0090.00018.48
8.1.160.0050.00221.88
8.1.150.0040.00418.87
8.1.140.0040.00417.50
8.1.130.0070.00017.80
8.1.120.0070.00017.35
8.1.110.0040.00417.48
8.1.100.0000.00717.33
8.1.90.0000.00717.43
8.1.80.0040.00317.34
8.1.70.0040.00417.38
8.1.60.0040.00417.47
8.1.50.0060.00317.51
8.1.40.0050.00517.46
8.1.30.0000.00817.60
8.1.20.0030.00617.67
8.1.10.0040.00417.58
8.1.00.0080.00017.51
8.0.300.0000.00718.77
8.0.290.0000.00716.75
8.0.280.0040.00418.46
8.0.270.0030.00317.23
8.0.260.0080.00017.16
8.0.250.0070.00017.03
8.0.240.0040.00417.05
8.0.230.0080.00017.02
8.0.220.0000.00716.95
8.0.210.0000.00716.94
8.0.200.0030.00316.91
8.0.190.0000.00917.03
8.0.180.0000.00717.00
8.0.170.0020.00516.86
8.0.160.0030.00316.91
8.0.150.0040.00416.91
8.0.140.0070.00016.90
8.0.130.0030.00313.37
8.0.120.0000.00916.93
8.0.110.0040.00416.79
8.0.100.0040.00416.89
8.0.90.0070.00016.89
8.0.80.0070.01316.91
8.0.70.0020.00516.98
8.0.60.0040.00416.98
8.0.50.0070.00017.01
8.0.30.0130.00917.15
8.0.20.0120.00717.40
8.0.10.0000.00717.02
8.0.00.0070.01116.71
7.4.330.0030.00315.00
7.4.320.0000.00616.52
7.4.300.0000.00716.64
7.4.290.0070.00016.41
7.4.280.0070.00016.50
7.4.270.0030.00316.58
7.4.260.0040.00416.38
7.4.250.0000.00716.45
7.4.240.0000.00716.61
7.4.230.0030.00316.48
7.4.220.0070.01016.46
7.4.210.0090.00616.53
7.4.200.0040.00416.66
7.4.160.0150.00616.43
7.4.150.0030.01417.40
7.4.140.0100.00917.86
7.4.130.0110.00816.56
7.4.120.0090.00816.53
7.4.110.0060.01016.63
7.4.100.0130.00616.53
7.4.90.0140.00316.55
7.4.80.0070.01119.39
7.4.70.0000.01616.66
7.4.60.0030.01316.46
7.4.50.0040.00416.54
7.4.40.0180.00016.63
7.4.30.0110.00816.49
7.4.00.0070.00415.00
7.3.330.0000.00613.35
7.3.320.0030.00313.42
7.3.310.0000.00716.38
7.3.300.0030.00316.43
7.3.290.0070.01316.41
7.3.280.0030.01316.40
7.3.270.0090.00817.40
7.3.260.0100.01316.60
7.3.250.0080.01116.59
7.3.240.0060.00916.40
7.3.230.0070.01016.39
7.3.210.0130.00416.62
7.3.200.0150.00619.39
7.3.190.0130.01016.51
7.3.180.0080.00816.46
7.3.170.0120.00316.42
7.3.160.0080.00816.44
7.2.330.0040.01416.81
7.2.320.0170.00016.85
7.2.310.0120.00616.78
7.2.300.0100.00616.39
7.2.290.0030.01316.75
7.2.00.0130.01019.30
7.1.100.0000.01117.94
7.1.70.0000.00717.07
7.1.60.0070.01719.12
7.1.50.0090.00916.93
7.1.00.0070.07322.48
7.0.200.0000.00916.79
7.0.140.0030.07021.97
7.0.60.0030.04019.91
7.0.50.0070.08017.87
7.0.40.0070.05720.15
7.0.30.0500.06320.23
7.0.20.0270.04020.17
7.0.10.0030.06020.34
7.0.00.0200.06720.12
5.6.280.0000.07720.99
5.6.210.0030.08320.57
5.6.200.0070.07318.18
5.6.190.0070.07320.57
5.6.180.0300.06020.48
5.6.170.0270.08020.55
5.6.160.0070.04720.55
5.6.150.0100.03718.16
5.6.140.0030.04318.24
5.6.130.0070.05718.16
5.6.120.0030.04720.97
5.6.110.0170.05721.04
5.6.100.0130.07321.12
5.6.90.0000.05320.97
5.6.80.0100.05020.49
5.6.70.0200.07720.51
5.5.350.0030.07720.41
5.5.340.0000.07718.08
5.5.330.0070.06320.25
5.5.320.0170.04720.21
5.5.310.0400.07720.32
5.5.300.0070.08317.98
5.5.290.0030.04017.97
5.5.280.0070.04020.80
5.5.270.0070.05020.68
5.5.260.0130.08020.89
5.5.250.0070.08020.71
5.5.240.0000.08020.18
5.4.450.0230.05319.38
5.4.440.0700.05319.63
5.4.430.0430.08319.70
5.4.420.0600.05019.47
5.4.410.0970.05019.45
5.4.400.0930.05019.27
5.4.390.0470.06319.06
5.4.380.0330.05318.80
5.4.370.0330.05318.73
5.4.360.0270.05318.72
5.4.350.0300.06018.75
5.4.340.0600.06018.56
5.4.320.0060.03612.50
5.4.310.0040.03912.50
5.4.300.0100.03212.50
5.4.290.0060.03812.50
5.4.280.0050.03612.40
5.4.270.0020.04012.40
5.4.260.0050.03812.40
5.4.250.0070.03712.39
5.4.240.0020.04312.40
5.4.230.0050.03812.39
5.4.220.0100.03112.39
5.4.210.0060.03412.39
5.4.200.0050.03712.39
5.4.190.0070.03512.38
5.4.180.0080.03412.39
5.4.170.0070.03512.39
5.4.160.0060.04212.39
5.4.150.0060.03812.39
5.4.140.0060.03712.07
5.4.130.0060.03312.06
5.4.120.0070.03312.02
5.4.110.0040.03612.02
5.4.100.0070.03812.01
5.4.90.0060.04112.01
5.4.80.0060.03612.02
5.4.70.0060.03312.01
5.4.60.0080.04112.01
5.4.50.0090.03812.01
5.4.40.0040.03712.00
5.4.30.0050.03611.99
5.4.20.0080.03211.99
5.4.10.0030.03811.99
5.4.00.0050.03911.48
5.3.290.0060.04012.80
5.3.280.0070.03812.71
5.3.270.0060.03812.72
5.3.260.0050.03912.72
5.3.250.0040.04212.72
5.3.240.0070.04412.72
5.3.230.0050.04412.71
5.3.220.0050.03612.68
5.3.210.0100.04012.68
5.3.200.0070.04012.68
5.3.190.0050.03812.67
5.3.180.0080.04512.67
5.3.170.0060.03612.67
5.3.160.0040.03812.68
5.3.150.0050.03812.67
5.3.140.0090.03412.66
5.3.130.0080.03712.66
5.3.120.0060.04112.66
5.3.110.0070.04212.65
5.3.100.0070.04212.12
5.3.90.0070.03512.10
5.3.80.0080.03412.09
5.3.70.0070.03612.09
5.3.60.0070.03612.08
5.3.50.0050.03712.02
5.3.40.0050.03712.02
5.3.30.0080.03211.98
5.3.20.0100.04011.76
5.3.10.0070.03411.73
5.3.00.0080.03411.71
5.2.170.0060.0299.21
5.2.160.0030.0319.21
5.2.150.0050.0309.21
5.2.140.0040.0309.21
5.2.130.0050.0299.17
5.2.120.0030.0309.16
5.2.110.0050.0299.18
5.2.100.0060.0279.18
5.2.90.0060.0289.18
5.2.80.0030.0319.17
5.2.70.0080.0329.17
5.2.60.0050.0289.13
5.2.50.0050.0299.09
5.2.40.0030.0299.07
5.2.30.0040.0319.05
5.2.20.0050.0289.03
5.2.10.0050.0288.94
5.2.00.0090.0288.80
5.1.60.0080.0278.09
5.1.50.0050.0238.08
5.1.40.0080.0298.06
5.1.30.0030.0268.41
5.1.20.0050.0248.43
5.1.10.0070.0268.16
5.1.00.0050.0348.16
5.0.50.0070.0236.64
5.0.40.0040.0256.50
5.0.30.0070.0346.31
5.0.20.0060.0196.27
5.0.10.0040.0266.25
5.0.00.0050.0316.25
4.4.90.0010.0174.77
4.4.80.0000.0184.75
4.4.70.0030.0154.75
4.4.60.0040.0174.76
4.4.50.0040.0134.77
4.4.40.0020.0254.71
4.4.30.0040.0184.76
4.4.20.0020.0174.85
4.4.10.0030.0154.85
4.4.00.0040.0234.76
4.3.110.0030.0194.67
4.3.100.0020.0154.67
4.3.90.0020.0154.63
4.3.80.0010.0264.58
4.3.70.0010.0164.63
4.3.60.0030.0144.63
4.3.50.0040.0144.63
4.3.40.0030.0274.53
4.3.30.0020.0183.30
4.3.20.0020.0163.28
4.3.10.0050.0133.24
4.3.00.0070.0237.39

preferences:
45.59 ms | 400 KiB | 5 Q