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; } $some_string = "22"; echo rome($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)
8.3.70.0170.00316.88
8.3.60.0110.01116.63
8.3.50.0100.00722.10
8.3.40.0140.00018.80
8.3.30.0000.01419.07
8.3.20.0030.00720.33
8.3.10.0030.01023.48
8.3.00.0040.00419.15
8.2.180.0070.01116.75
8.2.170.0110.00422.96
8.2.160.0200.00020.35
8.2.150.0140.00424.18
8.2.140.0040.00424.66
8.2.130.0080.00026.16
8.2.120.0000.00820.84
8.2.110.0060.00322.08
8.2.100.0060.00617.84
8.2.90.0040.00419.17
8.2.80.0050.00317.97
8.2.70.0050.00317.63
8.2.60.0050.00318.04
8.2.50.0050.00318.07
8.2.40.0040.00419.91
8.2.30.0030.00818.38
8.2.20.0030.00517.68
8.2.10.0030.00518.23
8.2.00.0030.00617.71
8.1.280.0110.01125.92
8.1.270.0060.00323.95
8.1.260.0070.01126.35
8.1.250.0040.00428.09
8.1.240.0030.00523.83
8.1.230.0110.00019.21
8.1.220.0040.00417.74
8.1.210.0000.00818.77
8.1.200.0030.00717.50
8.1.190.0000.00817.35
8.1.180.0080.00018.10
8.1.170.0040.00418.50
8.1.160.0000.00922.00
8.1.150.0000.00718.63
8.1.140.0030.00617.30
8.1.130.0070.00017.82
8.1.120.0040.00417.29
8.1.110.0000.00717.38
8.1.100.0000.00817.38
8.1.90.0000.00717.42
8.1.80.0000.00717.34
8.1.70.0000.00717.36
8.1.60.0030.00617.59
8.1.50.0030.00517.42
8.1.40.0000.01117.51
8.1.30.0040.00717.70
8.1.20.0040.00717.61
8.1.10.0020.00517.53
8.1.00.0050.00317.55
8.0.300.0000.00718.77
8.0.290.0040.00417.18
8.0.280.0000.00718.45
8.0.270.0070.00017.25
8.0.260.0040.00417.13
8.0.250.0070.00016.91
8.0.240.0040.00416.99
8.0.230.0070.00017.05
8.0.220.0050.00316.99
8.0.210.0030.00317.01
8.0.200.0030.00316.96
8.0.190.0000.00717.05
8.0.180.0000.00716.94
8.0.170.0060.00316.86
8.0.160.0040.00417.08
8.0.150.0040.00416.93
8.0.140.0040.00416.91
8.0.130.0040.00413.34
8.0.120.0060.00316.90
8.0.110.0070.00017.03
8.0.100.0000.00816.77
8.0.90.0000.00716.97
8.0.80.0100.01317.00
8.0.70.0080.00016.94
8.0.60.0000.00816.82
8.0.50.0000.00716.92
8.0.30.0080.01117.07
8.0.20.0040.01417.40
8.0.10.0070.00017.02
8.0.00.0120.00916.77
7.4.330.0050.00015.00
7.4.320.0030.00316.52
7.4.300.0030.00316.54
7.4.290.0030.00616.60
7.4.280.0000.00816.48
7.4.270.0000.00716.64
7.4.260.0030.00316.59
7.4.250.0080.00016.61
7.4.240.0020.00516.53
7.4.230.0000.00716.48
7.4.220.0120.00616.55
7.4.210.0090.00816.55
7.4.200.0040.00416.67
7.4.190.0000.00716.60
7.4.160.0070.01016.29
7.4.150.0100.00717.40
7.4.140.0100.00817.86
7.4.130.0080.00916.49
7.4.120.0100.00816.47
7.4.110.0120.00616.56
7.4.100.0070.01716.46
7.4.90.0100.01016.56
7.4.80.0130.00319.39
7.4.70.0030.01416.53
7.4.60.0080.01116.61
7.4.50.0000.00616.54
7.4.40.0070.01016.66
7.4.30.0080.00816.39
7.4.00.0060.00914.89
7.3.330.0000.00513.38
7.3.320.0000.00513.42
7.3.310.0040.00416.22
7.3.300.0000.00716.43
7.3.290.0140.00016.43
7.3.280.0070.01116.41
7.3.270.0180.00317.40
7.3.260.0040.01216.45
7.3.250.0060.01116.51
7.3.240.0060.01616.55
7.3.230.0100.00716.40
7.3.210.0180.00416.56
7.3.200.0100.00719.39
7.3.190.0060.01016.53
7.3.180.0100.00616.38
7.3.170.0080.01116.66
7.3.160.0060.00916.50
7.3.120.0030.00915.14
7.3.10.0100.01516.50
7.3.00.0190.00816.79
7.2.330.0090.00916.63
7.2.320.0160.00316.68
7.2.310.0070.01516.77
7.2.300.0090.00916.66
7.2.290.0100.00716.77
7.2.130.0060.01817.02
7.2.120.0110.01116.49
7.2.110.0130.00816.79
7.2.100.0090.00916.78
7.2.90.0110.00716.80
7.2.80.0170.00716.77
7.2.70.0170.00316.73
7.2.60.0060.00916.77
7.2.50.0110.00716.73
7.2.40.0100.01016.72
7.2.30.0060.01016.91
7.2.20.0070.00716.64
7.2.10.0040.01116.73
7.2.00.0040.01218.03
7.1.250.0110.01215.39
7.1.200.0060.00615.93
7.1.100.0030.01218.01
7.1.70.0050.00217.04
7.1.60.0030.01419.46
7.1.50.0130.01016.70
7.1.00.0030.07322.36
7.0.200.0070.00316.80
7.0.140.0030.07321.90
7.0.60.0000.08719.90
7.0.50.0030.06017.83
7.0.40.0200.04320.05
7.0.30.0200.07020.25
7.0.20.0200.06720.07
7.0.10.0100.05320.33
7.0.00.0130.04720.17
5.6.280.0130.06320.76
5.6.210.0130.06320.63
5.6.200.0170.08018.23
5.6.190.0170.09320.41
5.6.180.0030.07020.60
5.6.170.0270.07020.55
5.6.160.0070.08320.54
5.6.150.0030.08718.14
5.6.140.0070.03718.12
5.6.130.0070.08718.30
5.6.120.0100.08721.04
5.6.110.0100.07320.98
5.6.100.0000.04321.11
5.6.90.0030.08021.00
5.6.80.0030.08020.44
5.5.350.0000.07020.43
5.5.340.0130.07717.98
5.5.330.0130.06320.34
5.5.320.0400.07020.27
5.5.310.0400.06020.51
5.5.300.0130.07017.94
5.5.290.0100.08018.01
5.5.280.0030.04320.98
5.5.270.0070.05020.76
5.5.260.0070.07720.87
5.5.250.0030.04020.78
5.5.240.0030.07720.18
5.4.450.0630.05319.48
5.4.440.0300.05719.41
5.4.430.0700.06019.59
5.4.420.1230.06019.48
5.4.410.0800.04719.36
5.4.400.0930.05718.90
5.4.390.1230.06319.28
5.4.380.0170.05018.78
5.4.370.0100.05318.61
5.4.360.0070.05718.54
5.4.350.0200.05018.77
5.4.340.0170.04718.57
5.4.320.0090.05312.51
5.4.310.0110.05012.50
5.4.300.0070.05112.50
5.4.290.0090.05212.50
5.4.280.0090.04912.40
5.4.270.0090.04812.40
5.4.260.0040.05512.39
5.4.250.0050.05412.40
5.4.240.0100.04912.40
5.4.230.0040.05712.39
5.4.220.0060.05112.39
5.4.210.0060.05212.39
5.4.200.0090.05012.39
5.4.190.0060.05312.39
5.4.180.0080.05012.39
5.4.170.0090.05112.39
5.4.160.0080.03612.39
5.4.150.0050.04212.39
5.4.140.0140.03412.07
5.4.130.0070.04212.06
5.4.120.0070.04012.02
5.4.110.0070.04312.01
5.4.100.0090.04512.02
5.4.90.0070.05212.01
5.4.80.0090.05112.01
5.4.70.0090.04812.01
5.4.60.0030.04412.00
5.4.50.0210.09812.01
5.4.40.0090.04712.00
5.4.30.0080.04711.99
5.4.20.0110.04811.99
5.4.10.0100.06512.00
5.4.00.0150.07211.48
5.3.290.0070.04612.80
5.3.280.0170.05712.71
5.3.270.0130.06412.73
5.3.260.0120.07612.72
5.3.250.0120.08412.72
5.3.240.0150.08812.72
5.3.230.0100.08412.71
5.3.220.0190.08612.68
5.3.210.0110.05012.68
5.3.200.0090.05012.68
5.3.190.0100.04012.68
5.3.180.0080.03812.67
5.3.170.0090.05212.67
5.3.160.0100.05312.67
5.3.150.0080.06012.68
5.3.140.0080.05512.66
5.3.130.0050.05512.65
5.3.120.0070.04212.66
5.3.110.0080.03912.66
5.3.100.0130.06812.11
5.3.90.0070.05012.10
5.3.80.0100.06112.09
5.3.70.0070.05012.09
5.3.60.0100.04512.07
5.3.50.0180.07612.02
5.3.40.0130.06712.02
5.3.30.0110.05711.98
5.3.20.0210.09211.76
5.3.10.0150.07711.73
5.3.00.0150.06311.71
5.2.170.0140.0619.21
5.2.160.0100.0529.21
5.2.150.0140.0579.21
5.2.140.0110.0859.21
5.2.130.0170.0979.17
5.2.120.0240.0599.18
5.2.110.0050.0319.18
5.2.100.0100.0469.17
5.2.90.0040.0349.18
5.2.80.0130.0669.17
5.2.70.0020.0379.17
5.2.60.0120.0429.13
5.2.50.0080.0469.09
5.2.40.0070.0349.07
5.2.30.0060.0379.05
5.2.20.0140.0699.04
5.2.10.0060.0358.94
5.2.00.0070.0518.80
5.1.60.0030.0378.08
5.1.50.0150.0218.08
5.1.40.0050.0338.07
5.1.30.0130.0678.41
5.1.20.0140.0508.43
5.1.10.0090.0408.16
5.1.00.0050.0378.17
5.0.50.0050.0276.64
5.0.40.0090.0376.50
5.0.30.0060.0306.31
5.0.20.0020.0296.27
5.0.10.0030.0226.25
5.0.00.0030.0316.25
4.4.90.0020.0164.78
4.4.80.0040.0154.76
4.4.70.0040.0164.75
4.4.60.0040.0144.75
4.4.50.0040.0364.77
4.4.40.0040.0274.71
4.4.30.0020.0184.76
4.4.20.0030.0184.84
4.4.10.0040.0154.85
4.4.00.0040.0244.76
4.3.110.0050.0154.66
4.3.100.0050.0214.66
4.3.90.0020.0304.63
4.3.80.0090.0454.58
4.3.70.0040.0244.63
4.3.60.0050.0224.63
4.3.50.0020.0234.63
4.3.40.0040.0334.54
4.3.30.0030.0223.30
4.3.20.0020.0233.28
4.3.10.0080.0203.24
4.3.00.0130.0237.24

preferences:
40.9 ms | 401 KiB | 5 Q