3v4l.org

run code in 300+ PHP versions simultaneously
<?php function romanToDecimal($num) { $dec = 0; $i = 0; $romans = ['M', 'D', 'C', 'L', 'X', 'V', 'I']; $decs = [1000, 500, 100, 50, 10, 5, 1]; $rptr = 0; $num .= ' '; while ($i < strlen($num) - 1) { if ($num[$i] === $romans[$rptr]) { if (($rptr > 0) && ($num[$i + 1] === $romans[$rptr - 1])) { $dec -= $decs[$rptr]; $rptr -= 1; } else if (($rptr > 1) && ($num[$i + 1] === $romans[$rptr - 2])) { $dec -= $decs[$rptr]; $rptr -= 2; } else { $dec += $decs[$rptr]; } $i++; } else { $rptr++; if($rptr > count($decs)) return -1; } } return $dec; } function decimal2roman($num) { $romans = ['M', 'CM', 'D', 'CD', 'C', 'XC', 'L', 'XL', 'X', 'IX', 'V', 'IV', 'I']; $decs = [1000, 900, 500, 400, 100, 90, 50, 40, 10, 9, 5, 4, 1]; $len = count($decs); $rom = ''; while ($num) { $i = 0; while ($decs[$i++] > $num && $i < $len); $rom .= $romans[$i]; $num -= $decs[i]; } return $rom; } echo romanToDecimal('MCXII') . "\n"; echo romanToDecimal('LIII') . "\n"; echo romanToDecimal('XCIX') . "\n"; echo romanToDecimal('XLVII') . "\n"; echo romanToDecimal('I') . "\n"; echo romanToDecimal('IV') . "\n"; echo romanToDecimal('DCCCXCIX') . "\n"; echo romanToDecimal('MMMCMXCIX') . "\n"; //echo decimal2roman(128) . "\n"; ?>

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)
8.3.60.0070.01118.56
8.3.50.0150.00721.20
8.3.40.0140.00318.92
8.3.30.0100.00720.11
8.3.20.0040.00418.59
8.3.10.0000.00821.01
8.3.00.0070.00022.44
8.2.180.0150.00316.32
8.2.170.0070.00722.96
8.2.160.0100.00720.39
8.2.150.0050.00324.18
8.2.140.0050.00324.66
8.2.130.0000.00726.16
8.2.120.0080.00021.04
8.2.110.0000.01021.03
8.2.100.0060.00617.83
8.2.90.0090.00019.41
8.2.80.0040.00417.97
8.2.70.0050.00317.63
8.2.60.0000.00818.04
8.2.50.0000.00818.10
8.2.40.0000.00820.42
8.2.30.0030.00519.54
8.2.20.0000.00717.82
8.2.10.0070.00017.65
8.2.00.0020.00517.79
8.1.280.0070.00725.92
8.1.270.0140.00323.99
8.1.260.0050.00326.35
8.1.250.0040.00428.09
8.1.240.0110.00322.07
8.1.230.0040.00720.27
8.1.220.0040.00417.76
8.1.210.0040.00418.77
8.1.200.0030.00617.36
8.1.190.0000.00917.22
8.1.180.0030.00618.10
8.1.170.0060.00318.70
8.1.160.0040.00422.18
8.1.150.0040.00418.63
8.1.140.0000.00717.51
8.1.130.0040.00417.87
8.1.120.0050.00517.54
8.1.110.0070.00017.47
8.1.100.0040.00417.48
8.1.90.0050.00217.41
8.1.80.0040.00417.54
8.1.70.0030.00317.41
8.1.60.0050.00317.64
8.1.50.0000.00717.48
8.1.40.0080.00017.46
8.1.30.0000.00817.69
8.1.20.0040.00417.73
8.1.10.0090.00017.66
8.1.00.0040.00417.63
8.0.300.0050.00218.77
8.0.290.0080.00816.63
8.0.280.0030.00318.52
8.0.270.0030.00317.36
8.0.260.0000.00716.85
8.0.250.0030.00317.00
8.0.240.0040.00416.87
8.0.230.0000.00717.04
8.0.220.0030.00316.83
8.0.210.0030.00616.99
8.0.200.0030.00316.91
8.0.190.0000.00816.98
8.0.180.0070.00016.95
8.0.170.0040.00416.96
8.0.160.0070.00016.95
8.0.150.0000.00916.85
8.0.140.0040.00716.79
8.0.130.0060.00013.34
8.0.120.0040.00416.80
8.0.110.0000.00816.79
8.0.100.0000.00716.84
8.0.90.0030.00516.97
8.0.80.0160.00016.98
8.0.70.0040.00416.98
8.0.60.0040.00416.72
8.0.50.0000.00717.04
8.0.30.0130.00717.06
8.0.20.0140.00517.43
8.0.10.0000.00717.12
8.0.00.0080.01316.86
7.4.330.0030.00316.79
7.4.320.0060.00016.56
7.4.300.0030.00316.47
7.4.290.0050.00216.49
7.4.280.0070.00016.39
7.4.270.0000.00716.64
7.4.260.0030.00313.32
7.4.250.0000.00816.65
7.4.240.0030.00416.65
7.4.230.0030.00316.76
7.4.220.0090.00916.49
7.4.210.0090.00716.63
7.4.200.0040.00416.46
7.4.190.0000.00716.82
7.4.160.0130.00416.66
7.4.150.0040.01717.40
7.4.140.0140.00317.86
7.4.130.0080.00916.60
7.4.120.0100.00816.63
7.4.110.0100.01016.56
7.4.100.0100.00716.71
7.4.90.0160.01016.61
7.4.80.0090.00919.39
7.4.70.0130.01016.48
7.4.60.0090.00916.48
7.4.50.0030.00616.46
7.4.40.0070.00322.77
7.4.30.0130.00316.66
7.4.00.0050.01314.85
7.3.330.0050.00013.40
7.3.320.0030.00313.25
7.3.310.0070.00016.30
7.3.300.0030.00316.45
7.3.290.0070.00716.41
7.3.280.0090.01016.38
7.3.270.0170.00617.40
7.3.260.0110.00618.24
7.3.250.0090.00916.46
7.3.240.0140.00316.46
7.3.230.0080.00816.70
7.3.210.0140.00316.54
7.3.200.0160.00519.39
7.3.190.0000.01616.38
7.3.180.0120.00316.54
7.3.170.0100.00616.49
7.3.160.0090.00616.46
7.3.120.0050.01315.04
7.3.110.0060.00914.87
7.3.100.0000.01514.73
7.3.90.0060.00314.87
7.3.80.0000.01614.77
7.3.70.0030.01314.82
7.3.60.0000.00914.96
7.3.50.0070.00315.02
7.3.40.0060.00914.52
7.3.30.0000.01014.66
7.3.20.0080.00316.66
7.3.10.0030.00916.80
7.3.00.0050.01016.56
7.2.330.0060.01216.80
7.2.320.0120.00916.61
7.2.310.0040.01816.62
7.2.300.0070.01716.64
7.2.290.0110.01116.49
7.2.250.0090.00615.34
7.2.240.0030.01315.24
7.2.230.0120.00314.98
7.2.220.0000.01215.13
7.2.210.0080.00814.88
7.2.200.0090.00615.11
7.2.190.0090.00015.25
7.2.180.0040.00815.30
7.2.170.0100.00015.16
7.2.130.0070.00716.98
7.2.120.0040.00716.63
7.2.110.0090.00916.83
7.2.100.0040.00816.87
7.2.90.0080.00416.57
7.2.80.0040.01116.95
7.2.70.0070.01016.89
7.2.60.0040.01216.86
7.2.50.0100.00716.87
7.2.40.0140.00516.96
7.2.30.0090.00316.99
7.2.20.0070.00716.64
7.2.10.0030.00916.73
7.2.00.0050.00818.11
7.1.330.0030.01015.94
7.1.320.0070.00715.56
7.1.310.0100.00315.55
7.1.300.0030.00615.80
7.1.290.0100.00315.91
7.1.280.0000.01416.00
7.1.270.0120.00015.75
7.1.260.0000.01815.74
7.1.250.0030.00615.56
7.1.240.0110.00415.59
7.1.230.0030.00915.91
7.1.220.0000.01315.79
7.1.210.0030.01215.68
7.1.200.0020.01215.69
7.1.190.0040.01115.87
7.1.180.0070.00715.70
7.1.170.0000.01515.37
7.1.160.0120.00315.70
7.1.150.0070.00715.36
7.1.140.0070.00715.78
7.1.130.0110.00715.86
7.1.120.0090.00615.80
7.1.110.0090.00615.63
7.1.100.0050.00616.94
7.1.90.0130.00415.77
7.1.80.0030.01015.77
7.1.70.0000.01216.50
7.1.60.0110.00917.42
7.1.50.0180.00725.39
7.1.40.0040.00415.95
7.1.30.0070.00715.54
7.1.20.0070.00715.71
7.1.10.0070.00415.48
7.1.00.0060.02119.05
7.0.330.0100.00615.52
7.0.320.0090.00315.18
7.0.310.0000.01115.27
7.0.300.0080.00415.36
7.0.290.0030.01015.34
7.0.280.0100.00615.25
7.0.270.0000.00715.11
7.0.260.0040.01215.20
7.0.250.0130.00315.35
7.0.240.0090.00915.09
7.0.230.0070.00815.14
7.0.220.0100.00015.39
7.0.210.0000.01215.41
7.0.200.0030.00716.05
7.0.190.0130.00315.52
7.0.180.0090.00315.58
7.0.170.0060.00915.38
7.0.160.0030.00615.21
7.0.150.0070.00715.49
7.0.140.0080.03818.74
7.0.130.0000.00915.15
7.0.120.0080.00815.42
7.0.110.0070.00715.28
7.0.100.0100.02617.62
7.0.90.0070.02317.61
7.0.80.0120.02017.66
7.0.70.0060.02617.56
7.0.60.0060.02917.61
7.0.50.0150.02817.90
7.0.40.0100.04516.72
7.0.30.0030.03216.64
7.0.20.0020.04016.79
7.0.10.0070.02516.78
7.0.00.0050.05116.56
5.6.380.0000.01214.44
5.6.370.0060.00614.07
5.6.360.0070.00714.27
5.6.350.0100.00014.29
5.6.340.0070.00414.46
5.6.330.0030.01414.18
5.6.320.0030.00914.28
5.6.310.0080.00814.23
5.6.300.0070.01114.31
5.6.290.0040.00714.50
5.6.280.0080.03517.63
5.6.270.0060.01014.61
5.6.260.0030.00913.97
5.6.250.0020.05117.63
5.6.240.0090.04017.51
5.6.230.0090.03817.57
5.6.220.0050.02817.36
5.6.210.0060.04217.35
5.6.200.0110.02317.64
5.6.190.0080.03617.65
5.6.180.0080.03317.74
5.6.170.0080.02717.51
5.6.160.0130.04017.62
5.6.150.0050.04817.54
5.6.140.0050.02917.71
5.6.130.0070.02517.81
5.6.120.0030.03017.71
5.6.110.0070.04817.79
5.6.100.0030.04717.74
5.6.90.0070.04217.86
5.6.80.0090.04117.31
5.6.70.0140.03717.41
5.6.60.0110.03917.26
5.6.50.0080.04017.34
5.6.40.0070.02517.25
5.6.30.0070.04017.26
5.6.20.0070.04217.28
5.6.10.0070.03717.48
5.6.00.0040.02317.42
5.5.380.0060.04515.82
5.5.370.0120.03715.88
5.5.360.0080.04315.76
5.5.350.0120.03715.81
5.5.340.0110.04015.92
5.5.330.0080.04516.15
5.5.320.0080.03216.04
5.5.310.0050.04516.05
5.5.300.0050.04916.01
5.5.290.0060.04116.03
5.5.280.0050.02916.14
5.5.270.0120.03516.17
5.5.260.0100.03716.07
5.5.250.0080.04015.95
5.5.240.0080.03115.71
5.5.230.0020.05515.68
5.5.220.0070.04015.72
5.5.210.0040.04415.74
5.5.200.0070.03115.69
5.5.190.0130.03615.71
5.5.180.0070.03315.73
5.5.170.0000.01211.21
5.5.160.0070.03615.74
5.5.150.0080.02315.77
5.5.140.0110.03715.82
5.5.130.0050.03115.71
5.5.120.0100.03515.78
5.5.110.0030.03515.69
5.5.100.0100.03515.65
5.5.90.0070.02815.67
5.5.80.0070.04015.56
5.5.70.0070.03615.63
5.5.60.0030.03615.65
5.5.50.0090.03515.67
5.5.40.0050.04115.67
5.5.30.0020.04215.69
5.5.20.0080.03715.72
5.5.10.0000.02915.69
5.5.00.0010.02815.67
5.4.450.0080.03915.23
5.4.440.0080.04215.29
5.4.430.0070.04315.21
5.4.420.0070.03815.31
5.4.410.0050.03615.29
5.4.400.0100.03515.21
5.4.390.0140.03715.14
5.4.380.0060.02315.13
5.4.370.0020.02815.06
5.4.360.0090.02815.13
5.4.350.0040.04215.17
5.4.340.0050.04015.09
5.4.330.0000.00911.18
5.4.320.0050.02215.06
5.4.310.0080.02115.16
5.4.300.0110.02515.15
5.4.290.0030.02815.01
5.4.280.0100.03715.02
5.4.270.0080.02615.13
5.4.260.0070.04015.10
5.4.250.0010.03615.04
5.4.240.0050.02315.20
5.4.230.0050.03615.18
5.4.220.0070.02815.10
5.4.210.0050.02715.09
5.4.200.0050.04315.25
5.4.190.0030.02415.25
5.4.180.0050.04115.02
5.4.170.0120.03015.02
5.4.160.0090.04015.02
5.4.150.0080.02815.19
5.4.140.0110.03513.84
5.4.130.0100.03013.81
5.4.120.0030.02413.86
5.4.110.0020.04513.88
5.4.100.0070.02713.81
5.4.90.0030.02313.79
5.4.80.0050.01813.78
5.4.70.0050.03413.84
5.4.60.0080.03613.74
5.4.50.0050.02613.79
5.4.40.0030.03713.79
5.4.30.0070.03013.77
5.4.20.0090.03613.74
5.4.10.0030.03713.82
5.4.00.0090.03113.52
5.3.290.0040.02512.97
5.3.280.0000.04312.91
5.3.270.0080.03812.90
5.3.260.0070.02112.88
5.3.250.0040.04112.89
5.3.240.0050.02512.88
5.3.230.0040.02512.88
5.3.220.0060.02812.89
5.3.210.0050.04012.83
5.3.200.0050.02012.86
5.3.190.0050.02312.88
5.3.180.0050.03212.88
5.3.170.0070.02012.93
5.3.160.0050.03812.93
5.3.150.0030.02712.94
5.3.140.0050.04112.83
5.3.130.0080.02612.90
5.3.120.0080.03512.83
5.3.110.0060.04112.83
5.3.100.0030.03512.60
5.3.90.0030.04512.59
5.3.80.0050.02312.61
5.3.70.0020.04312.64
5.3.60.0130.03112.56
5.3.50.0050.02512.62
5.3.40.0070.03512.51
5.3.30.0080.03212.49
5.3.20.0040.03112.50
5.3.10.0060.03012.44
5.3.00.0000.02512.47
5.2.170.0090.02511.74
5.2.160.0050.03311.74
5.2.150.0070.03211.74
5.2.140.0030.01811.74
5.2.130.0000.03511.74
5.2.120.0070.02411.74
5.2.110.0030.01811.74
5.2.100.0070.02011.74
5.2.90.0030.03611.74
5.2.80.0020.02911.74
5.2.70.0070.02911.74
5.2.60.0020.03611.74
5.2.50.0040.02111.74
5.2.40.0020.02711.74
5.2.30.0050.01711.74
5.2.20.0080.02311.74
5.2.10.0020.03711.74
5.2.00.0080.02511.74
5.1.60.0050.01311.74
5.1.50.0030.02811.74
5.1.40.0070.02711.74
5.1.30.0050.02911.74
5.1.20.0020.03111.74
5.1.10.0060.01811.74
5.1.00.0020.03211.74
5.0.50.0030.02211.74
5.0.40.0020.01711.74
5.0.30.0030.03011.74
5.0.20.0050.01511.74
5.0.10.0050.02511.74
5.0.00.0070.02811.74
4.4.90.0030.01811.74
4.4.80.0030.01011.74
4.4.70.0030.01811.74
4.4.60.0050.01211.74
4.4.50.0000.01611.74
4.4.40.0030.01511.74
4.4.30.0030.01711.74
4.4.20.0010.02011.74
4.4.10.0030.01811.74
4.4.00.0030.02311.74
4.3.110.0030.01811.74
4.3.100.0000.02111.74
4.3.90.0030.00811.74
4.3.80.0020.03011.74
4.3.70.0050.00811.74
4.3.60.0020.01011.74
4.3.50.0020.02111.74
4.3.40.0020.02911.74
4.3.30.0020.01011.74
4.3.20.0030.01711.74
4.3.10.0000.01311.74
4.3.00.0030.01811.74

preferences:
55.4 ms | 401 KiB | 5 Q