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run code in 300+ PHP versions simultaneously
<?php class SudokuSolver { protected $sudokuColumns; public function __construct (array $sudoku) { $this->sudoku = $sudoku; } // could be static as well public function printOut ($sudoku) { foreach ($sudoku as $column) { foreach ($column as $cell) { echo "|"; if (null !== $cell) { echo $cell; } else { echo " "; } } echo "|\n"; } } public function solve() { $this->checkConsistenz(); } protected function checkConsistenz () { $columns = $this->sudoku; // check rows -> own method $rows = array(); foreach ($columns as $columnIndex => $column) { foreach ($column as $rowIndex => $cell) { $rows[$rowIndex][$columnIndex] = $cell; } $this->printOut($rows); } } protected function checkRow ($rowIndex) { } } $sudoku = array(); $sudoku[] = array(null,3,null, null,null,null, null,null,null); $sudoku[] = array(null,null,null, 1,9,5, null,null,null); $sudoku[] = array(null,null,8, null,null,null, null,6,null); $sudoku[] = array(8,null,null, null,6,null, null,null,null); $sudoku[] = array(4,null,null, 8,null,null, null,null,1); $sudoku[] = array(null,null,null ,null,2,null, null,null,null); $sudoku[] = array(null,6,null, null,null,null, 2,8,null); $sudoku[] = array(null,null,null, 4,1,9, null,null,5); $sudoku[] = array(null,null,null, null,null,null, null,7,null); $sudokuSolver = new SudokuSolver($sudoku); $sudokuSolver->printOut($sudoku); $sudokuSolver->solve($sudoku);

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)
8.3.70.0170.00716.75
8.3.60.0130.01018.43
8.3.50.0180.00821.94
8.3.40.0100.00718.88
8.3.30.0090.00619.21
8.3.20.0090.00020.34
8.3.10.0040.00423.61
8.3.00.0080.00020.76
8.2.180.0140.00716.75
8.2.170.0130.00322.96
8.2.160.0070.01022.22
8.2.150.0030.00524.18
8.2.140.0120.00624.66
8.2.130.0030.00526.16
8.2.120.0040.00422.21
8.2.110.0030.00622.26
8.2.100.0060.00618.03
8.2.90.0000.00819.17
8.2.80.0040.00417.97
8.2.70.0080.00017.63
8.2.60.0060.00318.04
8.2.50.0060.00318.07
8.2.40.0080.00019.34
8.2.30.0050.00318.19
8.2.20.0040.00417.80
8.2.10.0060.00319.47
8.2.00.0040.00717.77
8.1.280.0060.01325.92
8.1.270.0090.00023.84
8.1.260.0100.00026.35
8.1.250.0030.00628.09
8.1.240.0070.00324.01
8.1.230.0030.01019.15
8.1.220.0060.00317.74
8.1.210.0050.00318.77
8.1.200.0060.00317.35
8.1.190.0000.00917.40
8.1.180.0100.00018.10
8.1.170.0030.00618.49
8.1.160.0080.00022.01
8.1.150.0000.00818.68
8.1.140.0070.00517.50
8.1.130.0030.00517.84
8.1.120.0080.00017.48
8.1.110.0000.00817.43
8.1.100.0050.00317.42
8.1.90.0020.00517.48
8.1.80.0000.00817.58
8.1.70.0000.00717.45
8.1.60.0040.00417.62
8.1.50.0000.00817.46
8.1.40.0080.00017.44
8.1.30.0000.00917.57
8.1.20.0040.00417.71
8.1.10.0040.00417.56
8.1.00.0060.00617.63
8.0.300.0070.00018.77
8.0.290.0000.00817.17
8.0.280.0050.00218.37
8.0.270.0000.00717.22
8.0.260.0070.00018.50
8.0.250.0080.00016.95
8.0.240.0100.00016.99
8.0.230.0030.00617.01
8.0.220.0050.00216.95
8.0.210.0000.00816.98
8.0.200.0030.00316.99
8.0.190.0000.00816.92
8.0.180.0040.00416.97
8.0.170.0030.00616.98
8.0.160.0040.00416.89
8.0.150.0070.00016.78
8.0.140.0040.00416.78
8.0.130.0030.00313.45
8.0.120.0000.00816.80
8.0.110.0030.00516.89
8.0.100.0000.00816.97
8.0.90.0000.00816.90
8.0.80.0000.01716.82
8.0.70.0000.00817.00
8.0.60.0000.00816.91
8.0.50.0030.00616.75
8.0.30.0140.01217.29
8.0.20.0100.01217.40
8.0.10.0080.00017.12
8.0.00.0200.01016.92
7.4.330.0000.00615.09
7.4.320.0000.00716.55
7.4.300.0080.00016.70
7.4.290.0000.00816.56
7.4.280.0050.00216.46
7.4.270.0000.00716.66
7.4.260.0040.00416.43
7.4.250.0090.00016.47
7.4.240.0050.00316.52
7.4.230.0040.00416.35
7.4.220.0100.01916.65
7.4.210.0050.01116.61
7.4.200.0000.00716.67
7.4.190.0000.00816.71
7.4.160.0040.01516.58
7.4.150.0170.00717.40
7.4.140.0110.01417.86
7.4.130.0180.00816.61
7.4.120.0090.01416.62
7.4.110.0160.00616.59
7.4.100.0150.00916.57
7.4.90.0190.00516.53
7.4.80.0100.01016.44
7.4.70.0030.01716.73
7.4.60.0140.00616.57
7.4.50.0090.00016.57
7.4.40.0000.02022.77
7.4.30.0100.01016.37
7.4.10.0120.00616.13
7.4.00.0070.01215.77
7.3.330.0000.00513.21
7.3.320.0030.00313.15
7.3.310.0050.00216.47
7.3.300.0080.00016.38
7.3.290.0150.00316.36
7.3.280.0080.01016.37
7.3.270.0120.01217.40
7.3.260.0180.00916.60
7.3.250.0150.00916.57
7.3.240.0170.00616.42
7.3.230.0190.00316.39
7.3.210.0150.00616.52
7.3.200.0130.00819.39
7.3.190.0070.01316.44
7.3.180.0090.00916.61
7.3.170.0070.01816.50
7.3.160.0070.01316.47
7.3.130.0070.01116.38
7.3.120.0100.01015.58
7.3.110.0110.00816.50
7.3.100.0030.01316.38
7.3.90.0100.00716.44
7.3.80.0110.00716.34
7.3.70.0030.01516.42
7.3.60.0030.01216.33
7.3.50.0060.00616.51
7.3.40.0000.01516.30
7.3.30.0070.00716.32
7.3.20.0040.00718.22
7.3.10.0140.00617.15
7.3.00.0130.00517.04
7.2.330.0160.00616.51
7.2.320.0000.02116.80
7.2.310.0150.00916.78
7.2.300.0140.00716.86
7.2.290.0070.01416.78
7.2.260.0070.01316.66
7.2.250.0090.01216.61
7.2.240.0030.01316.39
7.2.230.0000.01616.51
7.2.220.0100.00716.41
7.2.210.0000.01816.81
7.2.200.0100.00616.64
7.2.190.0070.01116.55
7.2.180.0090.00616.61
7.2.170.0040.01516.59
7.2.160.0100.00716.51
7.2.150.0070.00718.45
7.2.140.0070.01018.49
7.2.130.0120.00517.21
7.2.120.0080.01017.35
7.2.110.0050.01217.42
7.2.100.0080.00917.17
7.2.90.0100.00917.15
7.2.80.0080.01017.46
7.2.70.0110.00817.19
7.2.60.0120.00817.20
7.2.50.0080.00817.39
7.2.40.0090.00717.22
7.2.30.0080.01017.28
7.2.20.0080.01217.32
7.2.10.0080.01017.40
7.2.00.0090.00918.00
7.1.330.0000.01217.39
7.1.320.0070.01017.46
7.1.310.0090.00917.30
7.1.300.0060.00617.21
7.1.290.0110.00417.34
7.1.280.0030.00917.35
7.1.270.0110.00417.32
7.1.260.0030.01317.31
7.1.250.0080.01016.25
7.1.240.0060.01217.35
7.1.230.0050.01417.32
7.1.220.0160.00817.30
7.1.210.0160.01017.28
7.1.200.0180.00917.46
7.1.190.0190.00817.46
7.1.180.0140.00617.46
7.1.170.0130.00317.39
7.1.160.0180.00017.46
7.1.150.0040.00817.23
7.1.140.0030.01317.36
7.1.130.0090.00617.28
7.1.120.0070.01017.25
7.1.110.0090.00617.38
7.1.100.0070.00917.88
7.1.90.0070.00717.47
7.1.80.0030.01217.48
7.1.70.0040.01117.12
7.1.60.0050.01418.26
7.1.50.0050.00917.17
7.1.40.0100.00717.49
7.1.30.0080.00417.36
7.1.20.0040.01417.47
7.1.10.0060.01617.31
7.1.00.0050.04219.85
7.0.330.0040.00717.06
7.0.320.0130.01017.18
7.0.310.0070.01016.84
7.0.300.0040.01117.03
7.0.290.0100.01016.88
7.0.280.0090.00417.03
7.0.270.0060.00616.91
7.0.260.0030.00716.98
7.0.250.0090.01217.10
7.0.240.0060.00917.11
7.0.230.0070.00616.94
7.0.220.0100.00317.18
7.0.210.0130.00317.00
7.0.200.0050.00816.91
7.0.190.0070.00717.14
7.0.180.0100.01016.58
7.0.170.0060.01316.54
7.0.160.0090.00916.99
7.0.150.0060.01217.00
7.0.140.0080.03619.50
7.0.130.0100.00717.04
7.0.120.0060.00917.00
7.0.110.0030.01316.94
7.0.100.0200.03818.48
7.0.90.0170.04718.48
7.0.80.0030.02618.44
7.0.70.0220.04418.57
7.0.60.0180.04518.51
7.0.50.0140.03318.51
7.0.40.0050.04817.49
7.0.30.0070.03817.60
7.0.20.0100.04517.65
7.0.10.0070.04817.51
7.0.00.0050.04517.48
5.6.400.0070.00716.16
5.6.390.0070.00716.07
5.6.380.0060.01516.30
5.6.370.0100.00615.83
5.6.360.0030.01316.09
5.6.350.0110.00715.97
5.6.340.0030.01616.16
5.6.330.0100.00716.01
5.6.320.0100.00716.05
5.6.310.0040.00816.41
5.6.300.0060.01616.17
5.6.290.0030.01316.13
5.6.280.0080.04018.65
5.6.270.0100.00316.14
5.6.260.0070.00715.95
5.6.250.0050.05018.30
5.6.240.0090.04418.36
5.6.230.0070.03018.46
5.6.220.0090.03718.40
5.6.210.0050.04418.36
5.6.200.0110.04018.56
5.6.190.0090.05018.65
5.6.180.0080.03818.56
5.6.170.0050.05118.56
5.6.160.0070.04418.53
5.6.150.0130.04318.53
5.6.140.0050.04718.49
5.6.130.0090.04318.39
5.6.120.0160.03618.46
5.6.110.0090.04218.42
5.6.100.0090.04318.43
5.6.90.0100.02518.43
5.6.80.0040.04418.34
5.6.70.0000.03218.16
5.6.60.0130.03318.12
5.6.50.0100.04418.31
5.6.40.0110.04118.13
5.6.30.0060.02518.19
5.6.20.0170.02518.37
5.6.10.0080.03318.21
5.6.00.0100.03518.32
5.5.380.0080.04018.14
5.5.370.0030.03017.97
5.5.360.0060.03118.17
5.5.350.0080.04118.25
5.5.340.0090.02918.29
5.5.330.0100.03918.50
5.5.320.0080.04418.36
5.5.310.0030.04718.39
5.5.300.0080.04818.32
5.5.290.0130.04418.43
5.5.280.0020.03218.43
5.5.270.0030.05418.49
5.5.260.0060.04818.33
5.5.250.0080.03918.45
5.5.240.0060.04017.94
5.5.230.0080.04518.01
5.5.220.0020.02918.12
5.5.210.0160.03718.07
5.5.200.0090.04918.07
5.5.190.0030.03518.08
5.5.180.0100.03718.07
5.5.170.0040.00815.86
5.5.160.0120.04418.06
5.5.150.0080.04718.04
5.5.140.0090.04518.13
5.5.130.0110.03618.01
5.5.120.0110.04118.03
5.5.110.0070.04518.02
5.5.100.0130.04217.98
5.5.90.0100.04317.83
5.5.80.0050.04317.92
5.5.70.0080.04018.13
5.5.60.0090.04317.97
5.5.50.0110.04117.99
5.5.40.0030.04918.02
5.5.30.0070.04217.90
5.5.20.0080.04318.05
5.5.10.0050.05017.91
5.5.00.0100.04417.96
5.4.450.0030.04016.51
5.4.440.0080.03516.55
5.4.430.0080.04316.49
5.4.420.0090.04116.38
5.4.410.0050.04016.45
5.4.400.0080.03916.34
5.4.390.0030.04216.24
5.4.380.0040.04216.38
5.4.370.0150.01316.21
5.4.360.0080.03716.22
5.4.350.0050.03016.34
5.4.340.0100.03816.22
5.4.330.0100.00713.54
5.4.320.0120.03916.24
5.4.310.0100.04216.23
5.4.300.0070.04216.38
5.4.290.0070.04916.28
5.4.280.0070.04516.31
5.4.270.0050.03816.35
5.4.260.0070.04316.29
5.4.250.0050.04516.38
5.4.240.0060.04116.39
5.4.230.0040.04216.38
5.4.220.0050.04716.28
5.4.210.0100.03216.21
5.4.200.0120.03216.24
5.4.190.0070.03816.33
5.4.180.0070.04516.28
5.4.170.0090.04116.38
5.4.160.0090.03916.28
5.4.150.0080.04316.29
5.4.140.0080.03514.98
5.4.130.0060.04315.00
5.4.120.0050.03914.94
5.4.110.0100.03815.03
5.4.100.0070.04215.03
5.4.90.0070.04114.98
5.4.80.0100.03814.97
5.4.70.0080.03914.99
5.4.60.0070.04114.98
5.4.50.0050.03715.02
5.4.40.0050.04115.04
5.4.30.0110.03815.04
5.4.20.0050.04214.95
5.4.10.0070.04414.94
5.4.00.0080.03614.66
5.3.290.0090.03914.12
5.3.280.0050.04214.05
5.3.270.0030.04514.08
5.3.260.0100.04014.10
5.3.250.0080.04414.06
5.3.240.0030.04314.15
5.3.230.0120.03614.14
5.3.220.0050.04314.13
5.3.210.0110.03114.09
5.3.200.0080.03614.05
5.3.190.0090.04214.07
5.3.180.0140.02514.07
5.3.170.0080.04214.13
5.3.160.0050.04214.04
5.3.150.0090.04714.04
5.3.140.0050.04714.03
5.3.130.0110.03914.13
5.3.120.0050.04414.10
5.3.110.0050.04514.05
5.3.100.0100.03613.78
5.3.90.0050.04313.83
5.3.80.0100.03713.83
5.3.70.0070.03813.83
5.3.60.0080.02813.82
5.3.50.0060.04413.71
5.3.40.0050.04313.72
5.3.30.0070.04413.69
5.3.20.0070.03913.70
5.3.10.0050.03813.61
5.3.00.0040.02613.64
5.2.170.0030.06311.62
5.2.160.0000.06311.62
5.2.150.0000.03311.62
5.2.140.0170.05311.62
5.2.130.0100.04311.62
5.2.120.0100.06011.62
5.2.110.0130.05311.62
5.2.100.0070.06711.62
5.2.90.0130.05011.62
5.2.80.0030.06711.62
5.2.70.0070.06011.62
5.2.60.0030.06711.62
5.2.50.0100.05711.62
5.2.40.0100.05711.62
5.2.30.0030.06011.62
5.2.20.0070.06711.62
5.2.10.0070.06311.62
5.2.00.0030.06711.62
5.1.60.0130.04311.62
5.1.50.0030.05711.62
5.1.40.0000.03711.62
5.1.30.0030.06311.62
5.1.20.0100.05311.62
5.1.10.0070.05311.62
5.1.00.0030.05711.62
5.0.50.0030.02711.62
5.0.40.0100.03311.62
5.0.30.0000.06011.62
5.0.20.0070.04011.62
5.0.10.0030.04011.62
5.0.00.0070.05011.62
4.4.90.0000.03711.62
4.4.80.0030.03311.62
4.4.70.0030.02711.62
4.4.60.0000.03011.62
4.4.50.0000.02711.62
4.4.40.0000.05711.62
4.4.30.0000.03711.62
4.4.20.0030.02011.62
4.4.10.0070.03011.62
4.4.00.0030.03311.62
4.3.110.0070.03011.62
4.3.100.0000.03011.62
4.3.90.0000.03711.62
4.3.80.0030.02011.62
4.3.70.0070.03011.62
4.3.60.0000.03011.62
4.3.50.0030.03011.62
4.3.40.0130.04011.62
4.3.30.0000.03311.62
4.3.20.0000.03711.62
4.3.10.0000.03711.62
4.3.00.0000.03311.62

preferences:
53.1 ms | 401 KiB | 5 Q