3v4l.org

run code in 300+ PHP versions simultaneously
<?php function roman2number($roman){ $conv = array( array("letter" => 'I', "number" => 1), array("letter" => 'V', "number" => 5), array("letter" => 'X', "number" => 10), array("letter" => 'L', "number" => 50), array("letter" => 'C', "number" => 100), array("letter" => 'D', "number" => 500), array("letter" => 'M', "number" => 1000), array("letter" => 0, "number" => 0) ); $arabic = 0; $state = 0; $sidx = 0; $len = strlen($roman); while ($len >= 0) { $i = 0; $sidx = $len; while ($conv[$i]['number'] > 0) { if (strtoupper(@$roman[$sidx]) == $conv[$i]['letter']) { if ($state > $conv[$i]['number']) { $arabic -= $conv[$i]['number']; } else { $arabic += $conv[$i]['number']; $state = $conv[$i]['number']; } } $i++; } $len--; } return($arabic); } $str = "This is IV chapter of book Hero and a preview of page MLCX"; echo preg_replace_callback('~\b[IVXLCDM0]+\b~', function($m) { return roman2number($m[0]); }, $str);

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)
8.5.10.0130.00416.96
8.5.00.0120.01020.16
8.4.150.0030.00014.05
8.4.140.0110.01017.78
8.4.130.0060.00318.13
8.4.120.0120.00920.75
8.4.110.0070.00522.68
8.4.100.0140.00717.89
8.4.90.0080.01418.88
8.4.80.0040.00418.21
8.4.70.0130.00618.27
8.4.60.0110.01019.09
8.4.50.0040.00518.91
8.4.40.0140.00719.93
8.4.30.0100.01018.18
8.4.20.0120.00918.70
8.4.10.0090.00018.05
8.3.280.0120.00818.69
8.3.270.0140.00616.75
8.3.260.0150.00516.68
8.3.250.0110.00818.91
8.3.240.0070.00516.78
8.3.230.0140.00716.96
8.3.220.0140.00517.27
8.3.210.0050.00417.04
8.3.200.0050.00516.80
8.3.190.0040.00417.18
8.3.180.0050.00517.38
8.3.170.0140.00418.97
8.3.160.0180.00016.81
8.3.150.0090.00917.41
8.3.140.0000.00816.99
8.3.130.0000.00918.90
8.3.120.0080.00019.10
8.3.110.0090.00020.94
8.3.100.0130.00624.06
8.3.90.0110.00426.77
8.3.80.0090.00017.97
8.3.70.0120.00318.68
8.3.60.0080.00818.55
8.3.50.0070.01017.68
8.3.40.0130.00319.11
8.3.30.0060.00918.90
8.3.20.0040.00419.28
8.3.10.0030.00623.48
8.3.00.0080.00023.56
8.2.290.0150.00520.37
8.2.280.0130.00718.39
8.2.270.0090.00917.12
8.2.260.0070.00718.44
8.2.250.0050.00317.07
8.2.240.0060.00317.31
8.2.230.0080.00022.58
8.2.220.0050.00537.54
8.2.210.0100.01026.77
8.2.200.0100.00018.79
8.2.190.0180.00316.88
8.2.180.0150.00018.91
8.2.170.0100.00722.96
8.2.160.0030.01219.27
8.2.150.0030.00624.18
8.2.140.0060.00324.66
8.2.130.0040.00420.57
8.2.120.0040.00426.35
8.2.110.0030.00620.32
8.2.100.0120.00018.16
8.2.90.0030.00718.00
8.2.80.0080.00017.97
8.2.70.0030.00517.93
8.2.60.0030.00518.16
8.2.50.0040.00418.10
8.2.40.0080.00021.15
8.2.30.0000.00719.43
8.2.20.0100.00018.20
8.2.10.0000.00719.55
8.2.00.0030.00619.63
8.1.330.0040.00521.98
8.1.320.0070.00318.33
8.1.310.0070.01116.77
8.1.300.0050.00316.81
8.1.290.0090.00030.84
8.1.280.0070.00725.92
8.1.270.0050.00322.07
8.1.260.0000.00726.35
8.1.250.0080.00028.09
8.1.240.0070.01023.92
8.1.230.0090.00319.10
8.1.220.0050.00317.74
8.1.210.0040.00418.77
8.1.200.0060.00317.63
8.1.190.0040.00417.48
8.1.180.0050.00318.10
8.1.170.0000.00818.95
8.1.160.0030.00618.87
8.1.150.0000.00718.90
8.1.140.0000.00819.50
8.1.130.0040.00419.07
8.1.120.0040.00417.54
8.1.110.0000.00817.61
8.1.100.0030.00517.64
8.1.90.0070.00317.64
8.1.80.0040.00417.59
8.1.70.0070.00017.57
8.1.60.0040.00417.76
8.1.50.0050.00317.64
8.1.40.0040.00717.75
8.1.30.0060.00617.73
8.1.20.0070.00017.85
8.1.10.0050.00217.79
8.1.00.0090.00017.67
8.0.300.0040.00419.91
8.0.290.0040.00417.00
8.0.280.0030.00518.57
8.0.270.0000.00717.23
8.0.260.0060.00017.20
8.0.250.0020.00517.19
8.0.240.0000.00717.13
8.0.230.0030.00517.25
8.0.220.0040.00417.03
8.0.210.0000.00717.06
8.0.200.0070.00017.16
8.0.190.0030.00617.16
8.0.180.0000.00717.11
8.0.170.0050.00517.13
8.0.160.0040.00417.14
8.0.150.0040.00417.15
8.0.140.0040.00417.14
8.0.130.0030.00313.50
8.0.120.0040.00417.18
8.0.110.0050.00517.05
8.0.100.0050.00216.99
8.0.90.0000.00816.94
8.0.80.0110.00917.12
8.0.70.0050.00317.11
8.0.60.0030.00516.92
8.0.50.0080.00017.11
8.0.30.0070.01317.19
8.0.20.0120.00817.48
8.0.10.0030.00517.24
8.0.00.0090.00817.09
7.4.330.0020.00215.55
7.4.320.0030.00316.75
7.4.300.0040.00416.65
7.4.290.0050.00316.80
7.4.280.0070.00016.70
7.4.270.0030.00316.67
7.4.260.0000.00716.73
7.4.250.0000.00816.82
7.4.240.0040.00416.75
7.4.230.0030.00616.50
7.4.220.0040.00416.86
7.4.210.0090.00816.90
7.4.200.0040.00416.83
7.4.160.0120.00516.78
7.4.140.0100.00917.86
7.4.130.0070.01116.91
7.4.120.0080.01016.77
7.4.110.0090.00916.94
7.4.100.0150.00316.86
7.4.90.0100.01016.56
7.4.80.0120.00919.39
7.4.70.0100.00616.50
7.4.60.0100.00616.64
7.4.50.0100.00516.86
7.4.40.0150.00616.71
7.4.00.0140.00315.32
7.3.330.0030.00313.44
7.3.320.0030.00313.60
7.3.310.0070.00016.71
7.3.300.0030.00316.52
7.3.290.0070.00016.63
7.3.280.0080.00716.61
7.3.260.0090.01116.72
7.3.240.0080.01316.74
7.3.230.0100.00716.54
7.3.210.0140.00316.63
7.3.200.0030.01316.68
7.3.190.0030.01316.74
7.3.180.0040.01716.82
7.3.170.0140.01116.61
7.3.160.0030.01316.62
7.3.70.0130.00614.77
7.3.60.0150.00415.00
7.3.50.0100.00914.72
7.3.40.0070.01114.85
7.3.30.0080.00815.07
7.3.20.0110.00815.09
7.3.10.0130.00715.09
7.3.00.0090.01014.85
7.2.330.0130.00916.74
7.2.320.0120.01216.95
7.2.310.0090.00916.88
7.2.300.0110.00616.90
7.2.290.0140.01116.94
7.2.200.0090.00915.33
7.2.190.0110.00915.33
7.2.180.0170.00315.24
7.2.170.0150.00315.02
7.2.160.0090.01115.16
7.2.150.0140.00715.06
7.2.140.0200.00315.25
7.2.130.0120.01615.20
7.2.120.0200.00315.28
7.2.110.0140.00615.11
7.2.100.0120.00915.12
7.2.90.0730.00715.39
7.2.80.0040.01415.29
7.2.70.0310.00815.30
7.2.60.0290.00515.42
7.2.50.0260.00915.33
7.2.40.0320.00915.29
7.2.30.0390.01015.23
7.2.20.0420.00915.16
7.2.10.0370.01115.25
7.2.00.0400.00715.27
7.1.300.0120.01214.22
7.1.290.0140.01014.18
7.1.280.0110.01113.95
7.1.270.0190.00514.02
7.1.260.0110.00714.21
7.1.250.0160.00614.18
7.1.240.0240.00414.17
7.1.230.0190.00814.16
7.1.220.0240.00314.14
7.1.210.0180.00914.27
7.1.200.0130.00515.07
7.1.190.0150.00914.28
7.1.180.0200.00413.86
7.1.170.0350.01013.95
7.1.160.0370.01214.05
7.1.150.0290.01014.15
7.1.140.0470.01214.21
7.1.130.0390.00914.18
7.1.120.0410.00314.11
7.1.110.0360.00814.21
7.1.100.0330.00514.16
7.1.90.0320.01114.03
7.1.80.0120.01014.15
7.1.70.0280.00514.28
7.1.60.0290.00923.24
7.1.50.0210.00723.01
7.1.40.0410.01123.21
7.1.30.0280.01123.16
7.1.20.0370.01123.14
7.1.10.0230.00914.07
7.1.00.0280.00514.09
7.0.330.0200.00413.72
5.6.400.0180.00414.31
5.6.390.0090.01214.07
5.6.380.0180.00614.61

preferences:
36.31 ms | 403 KiB | 5 Q