3v4l.org

run code in 300+ PHP versions simultaneously
<?php function rome($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; } $some_string = "1"; echo rome($some_string);

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)
8.3.60.0120.00918.55
8.3.50.0130.00622.02
8.3.40.0070.00718.90
8.3.30.0120.00319.05
8.3.20.0050.00520.34
8.3.10.0030.00623.65
8.3.00.0050.00520.77
8.2.180.0150.00016.63
8.2.170.0090.00622.96
8.2.160.0140.00720.39
8.2.150.0090.00924.18
8.2.140.0120.00624.66
8.2.130.0080.00026.16
8.2.120.0040.00420.78
8.2.110.0060.00322.30
8.2.100.0030.00919.70
8.2.90.0050.00319.30
8.2.80.0050.00317.97
8.2.70.0030.00617.63
8.2.60.0040.00419.64
8.2.50.0030.00518.07
8.2.40.0030.00619.82
8.2.30.0050.00518.23
8.2.20.0040.00417.68
8.2.10.0000.00818.00
8.2.00.0050.00317.79
8.1.280.0040.01125.92
8.1.270.0140.00723.97
8.1.260.0000.00826.35
8.1.250.0110.00728.09
8.1.240.0060.00323.58
8.1.230.0060.00618.99
8.1.220.0050.00317.77
8.1.210.0030.00618.77
8.1.200.0040.00417.35
8.1.190.0060.00317.23
8.1.180.0080.00018.10
8.1.170.0040.00418.56
8.1.160.0000.00821.92
8.1.150.0040.00418.66
8.1.140.0100.00017.41
8.1.130.0030.00317.73
8.1.120.0050.00217.32
8.1.110.0030.00517.37
8.1.100.0040.00417.28
8.1.90.0030.00417.43
8.1.80.0050.00217.32
8.1.70.0040.00417.28
8.1.60.0060.00317.58
8.1.50.0030.00617.51
8.1.40.0030.00617.52
8.1.30.0090.00317.65
8.1.20.0050.00517.64
8.1.10.0000.00717.61
8.1.00.0040.00417.44
8.0.300.0040.00418.77
8.0.290.0040.00417.18
8.0.280.0000.00818.44
8.0.270.0000.00717.24
8.0.260.0030.00317.19
8.0.250.0030.00316.93
8.0.240.0000.00716.91
8.0.230.0030.00316.96
8.0.220.0030.00316.99
8.0.210.0040.00416.81
8.0.200.0060.00016.94
8.0.190.0040.00416.97
8.0.180.0050.00216.97
8.0.170.0050.00317.01
8.0.160.0060.00316.86
8.0.150.0040.00816.73
8.0.140.0090.00016.79
8.0.130.0040.00413.37
8.0.120.0050.00316.84
8.0.110.0000.00716.95
8.0.100.0080.00017.06
8.0.90.0030.00416.81
8.0.80.0070.00717.00
8.0.70.0040.00316.95
8.0.60.0040.00316.85
8.0.50.0040.00317.01
8.0.30.0090.01116.92
8.0.20.0140.00817.40
8.0.10.0080.00017.05
8.0.00.0100.00716.97
7.4.330.0030.00315.01
7.4.320.0060.00016.46
7.4.300.0030.00316.50
7.4.290.0030.00716.50
7.4.280.0040.00416.54
7.4.270.0000.00816.60
7.4.260.0030.00316.45
7.4.250.0000.00816.56
7.4.240.0040.00316.49
7.4.230.0000.00716.39
7.4.220.0130.00616.62
7.4.210.0080.00716.58
7.4.200.0030.00516.48
7.4.190.0070.00016.54
7.4.160.0070.01016.39
7.4.150.0130.01017.40
7.4.140.0130.00517.86
7.4.130.0090.01016.60
7.4.120.0090.01116.57
7.4.110.0120.00616.44
7.4.100.0090.01216.34
7.4.90.0100.00716.55
7.4.80.0130.01019.39
7.4.70.0120.00416.57
7.4.60.0160.00616.59
7.4.50.0000.00716.42
7.4.40.0130.00716.32
7.4.30.0030.01416.61
7.4.00.0030.01115.14
7.3.330.0020.00213.38
7.3.320.0000.00513.40
7.3.310.0040.00416.46
7.3.300.0030.00316.38
7.3.290.0120.00916.49
7.3.280.0060.01216.39
7.3.270.0130.00617.40
7.3.260.0080.00916.60
7.3.250.0160.00516.45
7.3.240.0120.00416.58
7.3.230.0120.00916.39
7.3.210.0090.01216.48
7.3.200.0090.00919.39
7.3.190.0110.00816.32
7.3.180.0130.00316.61
7.3.170.0160.00316.47
7.3.160.0060.01016.59
7.3.120.0070.00714.72
7.3.110.0090.00614.65
7.3.100.0030.01314.87
7.3.90.0100.00614.63
7.3.80.0000.00814.93
7.3.70.0130.00014.92
7.3.60.0100.00014.77
7.3.50.0070.00314.71
7.3.40.0060.00314.66
7.3.30.0000.01414.90
7.3.20.0040.01216.51
7.3.10.0080.00616.64
7.3.00.0070.00916.62
7.2.330.0080.01516.67
7.2.320.0030.01716.47
7.2.310.0120.00616.60
7.2.300.0100.00716.74
7.2.290.0110.00616.55
7.2.250.0070.01015.06
7.2.240.0060.00315.18
7.2.230.0150.00315.25
7.2.220.0040.00815.35
7.2.210.0060.00614.68
7.2.200.0030.01015.07
7.2.190.0060.00614.97
7.2.180.0090.00315.16
7.2.170.0090.00614.98
7.2.130.0170.00216.68
7.2.120.0160.00316.56
7.2.110.0150.00516.84
7.2.100.0080.00916.65
7.2.90.0120.00716.89
7.2.80.0050.01116.64
7.2.70.0080.00916.54
7.2.60.0060.00816.63
7.2.50.0200.00516.88
7.2.40.0100.00516.74
7.2.30.0070.01116.69
7.2.20.0110.00816.81
7.2.10.0090.00816.42
7.2.00.0090.00717.46
7.1.330.0070.00715.97
7.1.320.0040.00415.94
7.1.310.0040.01115.70
7.1.300.0080.00415.62
7.1.290.0070.00715.67
7.1.280.0090.00615.77
7.1.270.0040.00416.04
7.1.260.0040.00715.83
7.1.250.0130.00815.46
7.1.200.0030.00615.49
7.1.100.0000.01518.30
7.1.70.0050.00516.95
7.1.60.0120.00619.46
7.1.50.0030.02017.07
7.1.00.0000.08022.46
7.0.200.0000.01016.46
7.0.140.0070.06722.21
7.0.60.0030.04019.96
7.0.50.0100.04317.75
7.0.40.0070.08020.51
7.0.30.0170.05320.30
7.0.20.0200.04020.24
7.0.10.0130.07320.26
7.0.00.0030.04320.09
5.6.280.0130.06321.12
5.6.210.0030.04020.45
5.6.200.0070.05018.18
5.6.190.0070.04320.48
5.6.180.0330.04320.50
5.6.170.0230.06720.50
5.6.160.0070.09320.55
5.6.150.0000.04718.20
5.6.140.0000.06718.23
5.6.130.0030.06318.17
5.6.120.0030.08021.02
5.6.110.0170.05021.14
5.6.100.0030.05321.01
5.6.90.0100.07721.04
5.6.80.0030.08720.40
5.5.350.0430.07020.41
5.5.340.0070.03717.98
5.5.330.0070.04020.35
5.5.320.0000.05720.27
5.5.310.0270.07720.23
5.5.300.0070.08318.08
5.5.290.0070.08717.95
5.5.280.0030.04320.77
5.5.270.0070.05720.85
5.5.260.0130.05320.75
5.5.250.0000.04320.59
5.5.240.0130.02720.06
5.4.450.0670.06019.20
5.4.440.0430.06319.47
5.4.430.0530.05719.44
5.4.420.0970.06719.64
5.4.410.1330.06319.43
5.4.400.0930.06018.80
5.4.390.1070.05319.24
5.4.380.0070.06018.84
5.4.370.0130.05018.50
5.4.360.0130.05018.48
5.4.350.0130.05718.54
5.4.340.0270.04018.68
5.4.320.0050.05212.51
5.4.310.0080.05712.50
5.4.300.0080.03812.50
5.4.290.0080.05412.50
5.4.280.0050.06212.40
5.4.270.0150.07412.39
5.4.260.0080.06212.40
5.4.250.0100.06412.40
5.4.240.0080.06012.39
5.4.230.0060.07012.39
5.4.220.0130.07312.39
5.4.210.0090.05512.39
5.4.200.0060.06012.39
5.4.190.0060.05212.39
5.4.180.0100.04212.39
5.4.170.0050.04312.40
5.4.160.0060.04112.39
5.4.150.0060.05112.39
5.4.140.0080.06612.07
5.4.130.0090.04912.06
5.4.120.0110.03612.02
5.4.110.0110.05012.02
5.4.100.0180.06612.01
5.4.90.0130.05012.01
5.4.80.0060.03712.02
5.4.70.0090.03112.01
5.4.60.0040.03712.01
5.4.50.0060.03612.01
5.4.40.0070.03512.00
5.4.30.0060.03612.00
5.4.20.0050.03712.00
5.4.10.0100.03111.99
5.4.00.0130.03811.48
5.3.290.0110.05212.80
5.3.280.0060.03912.71
5.3.270.0070.04012.72
5.3.260.0050.04112.72
5.3.250.0080.04212.71
5.3.240.0040.04312.72
5.3.230.0070.05512.71
5.3.220.0140.03412.68
5.3.210.0080.05312.68
5.3.200.0110.05712.68
5.3.190.0060.04412.68
5.3.180.0110.05112.67
5.3.170.0140.05112.67
5.3.160.0080.04212.68
5.3.150.0090.03912.68
5.3.140.0060.04312.66
5.3.130.0080.04512.66
5.3.120.0080.04712.66
5.3.110.0130.05012.66
5.3.100.0090.05412.12
5.3.90.0080.05212.10
5.3.80.0120.07412.09
5.3.70.0090.05812.09
5.3.60.0120.06512.08
5.3.50.0070.05612.02
5.3.40.0100.06212.02
5.3.30.0080.06611.98
5.3.20.0100.05111.76
5.3.10.0100.07511.73
5.3.00.0090.06611.71
5.2.170.0100.0499.22
5.2.160.0060.0439.21
5.2.150.0060.0509.21
5.2.140.0100.0519.21
5.2.130.0130.0649.17
5.2.120.0090.0589.17
5.2.110.0140.0589.18
5.2.100.0150.0439.18
5.2.90.0110.0479.17
5.2.80.0080.0369.17
5.2.70.0090.0549.17
5.2.60.0120.0799.13
5.2.50.0080.0679.10
5.2.40.0050.0479.07
5.2.30.0140.0799.05
5.2.20.0090.0359.04
5.2.10.0050.0368.94
5.2.00.0030.0348.80
5.1.60.0070.0328.08
5.1.50.0060.0288.09
5.1.40.0120.0308.06
5.1.30.0030.0318.41
5.1.20.0050.0318.43
5.1.10.0050.0308.16
5.1.00.0040.0348.16
5.0.50.0050.0226.64
5.0.40.0060.0216.50
5.0.30.0050.0336.31
5.0.20.0020.0286.27
5.0.10.0050.0286.26
5.0.00.0060.0466.25
4.4.90.0000.0334.78
4.4.80.0030.0284.75
4.4.70.0070.0234.75
4.4.60.0050.0234.75
4.4.50.0050.0284.77
4.4.40.0100.0314.71
4.4.30.0030.0224.76
4.4.20.0060.0154.85
4.4.10.0030.0224.85
4.4.00.0030.0274.76
4.3.110.0070.0204.67
4.3.100.0030.0184.67
4.3.90.0020.0214.63
4.3.80.0030.0274.58
4.3.70.0030.0174.63
4.3.60.0020.0174.63
4.3.50.0000.0204.63
4.3.40.0030.0254.53
4.3.30.0030.0173.30
4.3.20.0020.0183.27
4.3.10.0040.0163.24
4.3.00.0200.01316.12

preferences:
44.15 ms | 401 KiB | 5 Q