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run code in 300+ PHP versions simultaneously
<?php class SudokuSolver { protected $sudokuColumns; public function __construct ($sudoku) { $this->sudokuColumns = $sudoku; } // could be static as well public function printOut ($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->sudokuColumns; // check rows -> own method $rows = array(); foreach ($columns as $columnIndex => $column) { foreach ($column as $rowIndex => $cell) { $rows[$rowIndex][$columnIndex] = $cell; } //$this->printOut($rows); } foreach ($rows as $rowIndex => $row) { $this->checkRow($rowIndex); } } protected function checkRow ($rowIndex) { echo "checking $rowIndex..\n"; } } $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)
8.3.60.0090.00916.50
8.3.50.0080.01116.46
8.3.40.0040.01118.83
8.3.30.0110.00418.85
8.3.20.0040.00418.64
8.3.10.0040.00418.77
8.3.00.0090.01219.25
8.2.180.0080.01216.75
8.2.170.0070.00722.96
8.2.160.0130.00318.91
8.2.150.0000.00824.18
8.2.140.0150.00324.66
8.2.130.0060.00326.16
8.2.120.0050.00320.02
8.2.110.0030.00719.29
8.2.100.0040.00717.91
8.2.90.0040.00419.08
8.2.80.0000.00817.97
8.2.70.0030.00517.50
8.2.60.0080.00018.03
8.2.50.0030.00518.16
8.2.40.0050.00519.48
8.2.30.0040.00817.70
8.2.20.0060.00617.84
8.2.10.0040.00417.71
8.2.00.0000.00717.77
8.1.270.0090.00623.99
8.1.260.0000.00826.35
8.1.250.0040.00428.09
8.1.240.0060.00322.62
8.1.230.0000.01117.73
8.1.220.0040.00417.76
8.1.210.0040.00418.77
8.1.200.0050.00517.35
8.1.190.0000.00817.36
8.1.180.0030.00518.10
8.1.170.0050.00317.62
8.1.160.0040.00419.15
8.1.150.0050.00218.68
8.1.140.0050.00317.55
8.1.130.0070.00019.19
8.1.120.0040.00417.56
8.1.110.0040.00417.48
8.1.100.0000.00817.38
8.1.90.0000.00717.55
8.1.80.0040.00417.40
8.1.70.0040.00417.45
8.1.60.0040.00417.59
8.1.50.0060.00317.60
8.1.40.0000.00817.47
8.1.30.0060.00317.54
8.1.20.0110.00017.58
8.1.10.0040.00417.55
8.1.00.0050.00217.53
8.0.300.0060.00318.77
8.0.290.0080.00016.88
8.0.280.0050.00318.48
8.0.270.0000.00717.33
8.0.260.0070.00016.85
8.0.250.0040.00417.08
8.0.240.0000.00716.97
8.0.230.0000.00817.03
8.0.220.0080.00016.81
8.0.210.0040.00416.84
8.0.200.0070.00017.03
8.0.190.0030.00516.88
8.0.180.0040.00716.85
8.0.170.0000.00816.95
8.0.160.0090.00316.86
8.0.150.0000.00816.86
8.0.140.0040.00416.82
8.0.130.0060.00313.32
8.0.120.0000.01016.83
8.0.110.0040.00416.88
8.0.100.0000.00716.76
8.0.90.0040.00416.83
8.0.80.0100.01016.90
8.0.70.0040.00416.89
8.0.60.0000.00816.91
8.0.50.0030.00616.93
8.0.30.0030.01317.13
8.0.20.0120.00717.25
8.0.10.0040.00417.14
8.0.00.0110.01116.89
7.4.330.0060.00013.04
7.4.320.0000.00716.52
7.4.300.0000.00616.66
7.4.290.0000.00716.47
7.4.280.0070.00016.52
7.4.270.0030.00316.50
7.4.260.0060.00313.36
7.4.250.0000.01016.53
7.4.240.0050.00316.47
7.4.230.0000.00816.68
7.4.220.0240.00316.48
7.4.210.0030.01116.58
7.4.200.0030.00316.34
7.4.190.0040.00416.50
7.4.160.0110.00716.41
7.4.150.0070.01216.47
7.4.140.0090.02017.86
7.4.130.0140.00716.51
7.4.120.0190.00616.50
7.4.110.0110.00716.57
7.4.100.0110.00816.48
7.4.90.0180.00716.41
7.4.80.0040.01919.39
7.4.70.0130.00316.46
7.4.60.0050.01416.51
7.4.50.0070.00316.68
7.4.40.0090.00616.38
7.4.30.0130.00516.51
7.4.00.0100.00714.98
7.3.330.0070.00013.38
7.3.320.0000.00513.21
7.3.310.0020.00516.36
7.3.300.0060.00016.24
7.3.290.0100.00616.34
7.3.280.0120.00316.24
7.3.270.0060.01216.68
7.3.260.0160.00916.54
7.3.240.0090.00916.59
7.3.230.0110.00716.56
7.3.210.0130.00616.66
7.3.200.0120.00616.72
7.3.190.0070.01116.37
7.3.180.0100.01016.30
7.3.170.0030.01716.38
7.3.160.0040.01216.66
7.3.120.0060.00714.86
7.3.10.0000.00916.48
7.3.00.0040.00716.75
7.2.330.0130.00616.58
7.2.320.0050.01416.58
7.2.310.0120.00916.84
7.2.300.0130.00616.80
7.2.290.0100.00616.61
7.2.130.0060.00617.00
7.2.120.0030.00916.97
7.2.110.0000.00916.80
7.2.100.0090.00016.70
7.2.90.0040.01117.02
7.2.80.0060.01016.80
7.2.70.0090.00017.14
7.2.60.0040.01117.17
7.2.50.0030.01016.71
7.2.40.0030.00717.10
7.2.30.0050.00517.15
7.2.20.0060.00317.01
7.2.10.0060.00916.80
7.2.00.0020.00818.09
7.1.250.0060.00615.90
7.1.100.0060.00618.20
7.1.70.0000.00817.25
7.1.60.0030.02119.21
7.1.50.0140.01117.03
7.1.00.0000.07022.53
7.0.200.0180.00716.59
7.0.140.0070.07021.91
7.0.120.0000.05322.08
7.0.60.0070.07321.72
7.0.50.0130.07317.91
7.0.40.0170.07719.96
7.0.30.0130.04720.08
7.0.20.0270.08720.08
7.0.10.0030.04720.08
7.0.00.0130.05320.18
5.6.280.0000.07321.10
5.6.210.0100.07320.66
5.6.200.0070.04318.27
5.6.190.0070.09020.64
5.6.180.1070.06720.43
5.6.170.0200.04320.48
5.6.160.0200.07320.59
5.6.150.0100.07718.19
5.6.140.0100.08018.28
5.6.130.0030.04018.26
5.6.120.0130.07721.00
5.6.110.0230.05721.00
5.6.100.0070.07721.07
5.6.90.0070.08321.13
5.6.80.0100.08320.54
5.5.350.0070.08320.50
5.5.340.0070.06018.00
5.5.330.0170.08020.40
5.5.320.0230.06320.34
5.5.310.0330.07720.34
5.5.300.0000.04318.08
5.5.290.0070.08018.00
5.5.280.0030.09020.91
5.5.270.0070.08720.99
5.5.260.0100.08320.83
5.5.250.0130.06720.72
5.5.240.0200.06720.10
5.4.450.0070.05319.49
5.4.440.0030.10019.25
5.4.430.0070.06319.56
5.4.420.0070.06719.46
5.4.410.0070.05719.35
5.4.400.0000.05019.14
5.4.390.0130.07318.87
5.4.380.0100.07319.24
5.4.370.0030.07019.17
5.4.360.0030.07718.98
5.4.350.0070.07019.24
5.4.340.0070.05719.24
5.4.320.0070.03719.12
5.4.310.0070.03719.14
5.4.300.0030.03719.14
5.4.290.0000.04018.87
5.4.280.0000.04318.85
5.4.270.0030.04319.14
5.4.260.0030.04319.08
5.4.250.0070.03318.88
5.4.240.0070.03319.23
5.4.230.0100.03019.24
5.4.220.0070.03319.14
5.4.210.0100.03019.23
5.4.200.0070.03319.14
5.4.190.0070.03718.91
5.4.180.0070.03318.96
5.4.170.0070.03719.18
5.4.160.0070.05318.84
5.4.150.0000.04019.10
5.4.140.0000.03716.39
5.4.130.0070.06316.41
5.4.120.0030.03316.51
5.4.110.0070.03316.50
5.4.100.0070.03316.48
5.4.90.0030.03316.47
5.4.80.0000.04016.34
5.4.70.0070.03016.34
5.4.60.0000.03716.41
5.4.50.0070.03016.69
5.4.40.0030.03716.69
5.4.30.0100.03716.45
5.4.20.0070.04016.36
5.4.10.0030.07016.45
5.4.00.0070.04715.82
5.3.290.0100.05314.73
5.3.280.0030.04014.64
5.3.270.0030.04014.69
5.3.260.0130.03314.68
5.3.250.0100.03314.64
5.3.240.0070.03314.79
5.3.230.0030.03714.64
5.3.220.0100.03014.50
5.3.210.0070.03314.62
5.3.200.0270.02014.68
5.3.190.0000.04314.65
5.3.180.0100.03014.68
5.3.170.0070.03314.75
5.3.160.0000.04014.49
5.3.150.0000.04014.65
5.3.140.0070.03314.65
5.3.130.0100.07014.73
5.3.120.0100.07314.64
5.3.110.0030.04014.64
5.3.100.0030.04314.12
5.3.90.0030.08014.09
5.3.80.0100.05313.98
5.3.70.0000.08014.13
5.3.60.0170.06714.09
5.3.50.0130.04714.00
5.3.40.0030.04314.02
5.3.30.0130.05714.00
5.3.20.0130.05013.78
5.3.10.0070.05313.75
5.3.00.0100.03013.74
5.2.170.0000.04711.23
5.2.160.0030.04311.25
5.2.150.0070.06711.34
5.2.140.0130.05311.15
5.2.130.0130.06011.19
5.2.120.0030.04011.11
5.2.110.0070.06311.20
5.2.100.0030.03011.09
5.2.90.0000.06011.18
5.2.80.0030.04011.17
5.2.70.0030.03311.18
5.2.60.0030.06311.14
5.2.50.0070.05711.06
5.2.40.0030.03311.02
5.2.30.0070.06710.96
5.2.20.0000.06010.96
5.2.10.0070.06010.96
5.2.00.0030.05310.92
5.1.60.0030.05710.04
5.1.50.0100.04710.04
5.1.40.0030.05710.00
5.1.30.0070.04010.53
5.1.20.0100.03010.29
5.1.10.0100.04710.11
5.1.00.0070.05710.13
5.0.50.0070.0178.58
5.0.40.0070.0408.55
5.0.30.0030.0508.20
5.0.20.0000.0278.23
5.0.10.0000.0378.23
5.0.00.0030.0638.27
4.4.90.0070.0138.01
4.4.80.0100.0208.01
4.4.70.0100.0308.01
4.4.60.0030.0338.01
4.4.50.0030.0338.01
4.4.40.0030.0538.01
4.4.30.0000.0338.01
4.4.20.0030.0308.01
4.4.10.0030.0278.01
4.4.00.0030.0338.01
4.3.110.0030.0378.01
4.3.100.0030.0138.01
4.3.90.0030.0178.01
4.3.80.0000.0378.01
4.3.70.0030.0178.01
4.3.60.0030.0338.01
4.3.50.0000.0308.01
4.3.40.0000.0378.01
4.3.30.0000.0378.01
4.3.20.0030.0378.01
4.3.10.0070.0238.01
4.3.00.0000.0338.01

preferences:
57.42 ms | 400 KiB | 5 Q