3v4l.org

run code in 300+ PHP versions simultaneously
<?php class SudokuSolver { const NUMBERS = "123456789"; 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 => $row) { var_export($this->checkRow($rowIndex,$row)); } } protected function checkRow ($rowIndex, $row) { $numbers = self::NUMBERS; echo "checking $rowIndex..\n"; foreach ($row as $column) { if (null === $column) { continue; } //echo "$column , $numbers\n" . var_export(strpos($numbers,$column),true); if (false === strpos($numbers,$column)) { return false; } $numbers = str_replace($col,'',$numbers); } return true; } } $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)
8.3.60.0110.00418.77
8.3.50.0100.00921.96
8.3.40.0030.01618.79
8.3.30.0120.00319.09
8.3.20.0050.00320.52
8.3.10.0000.00822.14
8.3.00.0080.00022.43
8.2.180.0130.01016.63
8.2.170.0090.00622.96
8.2.160.0110.00721.02
8.2.150.0030.00524.18
8.2.140.0000.00824.66
8.2.130.0080.00026.16
8.2.120.0090.00017.88
8.2.110.0060.00322.11
8.2.100.0040.00817.85
8.2.90.0040.00419.40
8.2.80.0080.00018.05
8.2.70.0030.00617.75
8.2.60.0080.00018.05
8.2.50.0000.00818.07
8.2.40.0040.00418.28
8.2.30.0050.00518.07
8.2.20.0040.00417.74
8.2.10.0080.00017.70
8.2.00.0030.00717.93
8.1.280.0110.00425.92
8.1.270.0090.00022.06
8.1.260.0050.00326.35
8.1.250.0080.00828.09
8.1.240.0000.00923.72
8.1.230.0120.00019.02
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0070.00317.11
8.1.190.0000.00917.42
8.1.180.0040.00418.10
8.1.170.0030.00518.50
8.1.160.0050.00522.09
8.1.150.0040.00418.70
8.1.140.0030.00617.52
8.1.130.0000.00717.72
8.1.120.0040.00417.54
8.1.110.0040.00417.36
8.1.100.0040.00417.32
8.1.90.0000.00817.50
8.1.80.0000.00717.51
8.1.70.0030.00317.45
8.1.60.0000.00817.66
8.1.50.0080.00017.48
8.1.40.0040.00417.51
8.1.30.0030.00617.64
8.1.20.0040.00417.50
8.1.10.0050.00217.59
8.1.00.0000.00817.48
8.0.300.0040.00418.77
8.0.290.0080.00017.18
8.0.280.0040.00418.52
8.0.270.0070.00017.31
8.0.260.0070.00016.81
8.0.250.0030.00316.91
8.0.240.0040.00416.95
8.0.230.0000.00717.00
8.0.220.0000.00716.91
8.0.210.0070.00016.96
8.0.200.0000.00716.93
8.0.190.0000.00816.89
8.0.180.0050.00316.92
8.0.170.0040.00416.98
8.0.160.0030.00516.96
8.0.150.0000.00716.96
8.0.140.0050.00316.96
8.0.130.0030.00313.41
8.0.120.0030.00516.92
8.0.110.0000.00916.79
8.0.100.0040.00416.94
8.0.90.0070.00016.76
8.0.80.0090.00917.04
8.0.70.0050.00216.96
8.0.60.0070.00016.93
8.0.50.0000.00716.93
8.0.30.0090.01517.02
8.0.20.0190.00317.40
8.0.10.0030.00516.98
8.0.00.0090.01017.03
7.4.330.0020.00215.15
7.4.320.0030.00316.66
7.4.300.0000.00616.50
7.4.290.0030.00316.42
7.4.280.0070.00016.46
7.4.270.0040.00416.53
7.4.260.0000.00716.60
7.4.250.0070.00016.56
7.4.240.0040.00416.59
7.4.230.0040.00416.48
7.4.220.0060.01216.62
7.4.210.0040.01016.61
7.4.200.0050.00216.43
7.4.190.0050.00216.48
7.4.160.0110.00716.60
7.4.150.0160.00317.40
7.4.140.0110.01117.86
7.4.130.0100.00816.52
7.4.120.0100.00916.49
7.4.110.0150.00316.63
7.4.100.0070.01516.80
7.4.90.0070.01116.68
7.4.80.0100.01416.64
7.4.70.0120.00816.68
7.4.60.0070.01016.56
7.4.50.0040.00416.39
7.4.40.0150.00322.77
7.4.30.0080.00816.50
7.4.10.0130.00314.81
7.4.00.0090.00714.96
7.3.330.0060.00013.54
7.3.320.0050.00013.45
7.3.310.0050.00316.45
7.3.300.0000.00716.36
7.3.290.0090.00916.42
7.3.280.0150.00516.49
7.3.270.0160.00317.40
7.3.260.0110.00816.52
7.3.250.0080.01316.52
7.3.240.0000.01916.45
7.3.230.0110.00616.39
7.3.210.0060.01316.45
7.3.200.0090.01519.39
7.3.190.0120.00916.69
7.3.180.0130.00716.54
7.3.170.0070.01116.52
7.3.160.0190.00616.68
7.3.130.0040.01414.93
7.3.120.0050.01214.83
7.3.110.0090.00914.89
7.3.100.0050.01115.05
7.3.90.0100.00614.91
7.3.80.0050.00814.71
7.3.70.0070.00714.80
7.3.60.0070.01014.71
7.3.50.0050.00914.80
7.3.40.0060.00614.76
7.3.30.0020.01114.89
7.3.20.0030.00916.72
7.3.10.0070.00616.48
7.3.00.0060.00716.71
7.2.330.0190.00816.86
7.2.320.0090.01116.52
7.2.310.0120.00916.75
7.2.300.0030.01516.83
7.2.290.0100.00716.87
7.2.260.0060.01315.26
7.2.250.0060.01115.17
7.2.240.0070.01115.06
7.2.230.0090.00915.08
7.2.220.0070.00714.90
7.2.210.0050.01015.20
7.2.200.0070.00914.98
7.2.190.0030.00815.14
7.2.180.0070.00514.99
7.2.170.0060.01014.93
7.2.160.0040.00714.99
7.2.150.0080.00416.68
7.2.140.0080.00417.03
7.2.130.0030.00716.88
7.2.120.0060.00616.92
7.2.110.0120.00416.73
7.2.100.0060.00617.02
7.2.90.0070.00416.84
7.2.80.0040.00716.98
7.2.70.0100.00716.75
7.2.60.0050.01016.74
7.2.50.0060.01316.86
7.2.40.0000.01316.83
7.2.30.0000.01616.94
7.2.20.0070.01316.79
7.2.10.0000.01216.90
7.2.00.0100.00618.08
7.1.330.0080.00715.76
7.1.320.0050.00915.81
7.1.310.0060.00715.85
7.1.300.0000.00915.80
7.1.290.0080.00515.88
7.1.280.0050.00915.79
7.1.270.0060.00515.63
7.1.260.0030.01115.82
7.1.250.0000.00915.79
7.1.240.0030.00915.89
7.1.230.0080.00315.76
7.1.220.0070.01015.91
7.1.210.0040.00715.77
7.1.200.0090.00415.71
7.1.190.0090.00915.93
7.1.180.0060.00915.94
7.1.170.0080.00415.87
7.1.160.0100.00015.75
7.1.150.0070.00715.58
7.1.140.0000.01215.82
7.1.130.0030.01015.92
7.1.120.0000.01115.92
7.1.110.0040.00415.77
7.1.100.0560.01116.03
7.1.90.0060.00315.55
7.1.80.0110.00015.88
7.1.70.0050.00816.35
7.1.60.0060.01317.91
7.1.50.0060.00816.13
7.1.40.0060.00915.83
7.1.30.0070.00715.96
7.1.20.0030.01415.90
7.1.10.0060.00915.84
7.1.00.0050.04219.04
7.0.330.0110.00315.38
7.0.320.0070.00715.48
7.0.310.0000.01215.39
7.0.300.0000.01315.41
7.0.290.0030.01015.23
7.0.280.0090.00615.37
7.0.270.0060.00315.35
7.0.260.0040.01115.65
7.0.250.0060.00915.46
7.0.240.0030.00915.56
7.0.230.0070.00315.22
7.0.220.0070.00715.45
7.0.210.0120.00315.36
7.0.200.0130.00916.16
7.0.190.0000.00915.26
7.0.180.0080.00815.59
7.0.170.0030.01015.51
7.0.160.0030.01015.25
7.0.150.0120.00315.46
7.0.140.0070.03918.82
7.0.130.0040.01115.50
7.0.120.0030.01015.60
7.0.110.0070.00715.50
7.0.100.0060.04317.75
7.0.90.0030.05017.77
7.0.80.0080.03617.52
7.0.70.0090.04517.65
7.0.60.0070.02817.69
7.0.50.0130.03817.84
7.0.40.0050.02816.81
7.0.30.0080.04116.80
7.0.20.0080.04616.71
7.0.10.0030.04716.68
7.0.00.0050.03516.81
5.6.400.0000.01314.16
5.6.390.0030.00614.36
5.6.380.0070.01014.84
5.6.370.0070.00714.50
5.6.360.0030.00614.74
5.6.350.0100.00314.64
5.6.340.0030.01614.79
5.6.330.0120.00614.43
5.6.320.0000.01314.80
5.6.310.0030.01114.39
5.6.300.0070.01014.68
5.6.290.0080.00514.52
5.6.280.0070.04517.89
5.6.270.0100.00314.35
5.6.260.0030.01414.65
5.6.250.0090.03817.57
5.6.240.0100.03417.69
5.6.230.0120.03317.60
5.6.220.0100.04317.51
5.6.210.0120.04517.47
5.6.200.0050.04617.74
5.6.190.0140.03917.71
5.6.180.0030.04517.85
5.6.170.0100.04217.85
5.6.160.0080.04017.97
5.6.150.0100.03317.75
5.6.140.0100.04017.89
5.6.130.0030.03017.71
5.6.120.0140.03717.68
5.6.110.0110.04117.96
5.6.100.0080.02817.82
5.6.90.0080.04517.60
5.6.80.0040.03417.54
5.6.70.0100.03517.47
5.6.60.0100.02517.57
5.6.50.0020.04617.52
5.6.40.0030.05017.44
5.6.30.0080.04217.46
5.6.20.0120.03217.42
5.6.10.0000.05117.55
5.6.00.0100.03317.28
5.5.380.0050.04117.43
5.5.370.0060.03417.45
5.5.360.0070.03017.38
5.5.350.0040.03017.38
5.5.340.0080.03017.67
5.5.330.0110.02617.57
5.5.320.0100.04517.54
5.5.310.0110.04617.67
5.5.300.0090.03517.70
5.5.290.0040.03817.54
5.5.280.0060.04417.67
5.5.270.0070.02817.62
5.5.260.0070.04017.79
5.5.250.0120.04317.42
5.5.240.0060.04217.41
5.5.230.0070.04417.38
5.5.220.0060.04417.29
5.5.210.0130.03517.28
5.5.200.0110.04017.23
5.5.190.0050.03417.26
5.5.180.0070.04417.37
5.5.170.0030.01314.46
5.5.160.0050.04517.45
5.5.150.0070.02517.34
5.5.140.0160.03517.28
5.5.130.0070.03917.30
5.5.120.0070.03017.27
5.5.110.0100.03817.24
5.5.100.0050.04717.34
5.5.90.0040.04317.41
5.5.80.0080.03117.29
5.5.70.0120.03717.32
5.5.60.0060.04717.16
5.5.50.0070.04217.13
5.5.40.0090.02917.12
5.5.30.0060.04217.16
5.5.20.0020.04017.10
5.5.10.0080.04017.28
5.5.00.0080.04017.33
5.4.450.0050.04516.16
5.4.440.0080.04516.12
5.4.430.0070.03916.09
5.4.420.0090.03716.02
5.4.410.0100.03516.13
5.4.400.0060.04015.96
5.4.390.0070.04315.86
5.4.380.0080.04115.86
5.4.370.0060.02815.84
5.4.360.0120.03816.00
5.4.350.0080.03515.93
5.4.340.0120.03616.02
5.4.330.0070.00712.82
5.4.320.0100.03816.02
5.4.310.0050.04015.84
5.4.300.0080.03716.01
5.4.290.0070.04215.87
5.4.280.0050.03915.89
5.4.270.0030.04516.01
5.4.260.0060.04415.86
5.4.250.0030.03415.93
5.4.240.0030.04115.97
5.4.230.0070.04115.97
5.4.220.0060.03616.02
5.4.210.0110.03715.97
5.4.200.0110.03715.92
5.4.190.0080.02815.95
5.4.180.0030.04415.88
5.4.170.0050.02715.93
5.4.160.0060.02615.82
5.4.150.0060.04115.91
5.4.140.0030.03714.67
5.4.130.0040.04414.64
5.4.120.0100.03514.61
5.4.110.0060.03814.60
5.4.100.0120.03714.69
5.4.90.0070.04014.70
5.4.80.0050.03714.65
5.4.70.0040.03614.71
5.4.60.0050.02814.64
5.4.50.0100.03814.60
5.4.40.0070.02014.62
5.4.30.0110.03614.60
5.4.20.0080.02514.65
5.4.10.0110.03614.63
5.4.00.0040.03514.37
5.3.290.0060.04113.73
5.3.280.0100.04213.71
5.3.270.0070.04013.76
5.3.260.0030.04413.71
5.3.250.0070.03913.70
5.3.240.0100.03413.74
5.3.230.0050.04213.74
5.3.220.0020.04113.77
5.3.210.0080.03813.73
5.3.200.0030.04413.69
5.3.190.0080.04213.68
5.3.180.0030.03813.68
5.3.170.0070.03313.70
5.3.160.0030.04313.74
5.3.150.0050.04013.69
5.3.140.0050.04213.70
5.3.130.0130.03513.76
5.3.120.0030.03613.67
5.3.110.0020.04713.73
5.3.100.0100.03613.52
5.3.90.0050.03913.42
5.3.80.0040.03913.45
5.3.70.0050.03813.46
5.3.60.0080.03313.50
5.3.50.0050.04213.37
5.3.40.0070.04013.47
5.3.30.0020.03013.45
5.3.20.0070.03713.28
5.3.10.0070.02713.31
5.3.00.0060.03313.29
5.2.170.0070.06313.59
5.2.160.0100.05713.59
5.2.150.0030.06713.59
5.2.140.0070.06013.59
5.2.130.0170.05013.59
5.2.120.0070.05313.59
5.2.110.0030.04013.59
5.2.100.0070.06013.59
5.2.90.0070.05713.59
5.2.80.0070.06313.59
5.2.70.0030.06313.59
5.2.60.0070.05013.59
5.2.50.0100.04313.59
5.2.40.0100.05713.59
5.2.30.0070.04713.59
5.2.20.0000.06013.59
5.2.10.0130.03313.59
5.2.00.0100.05313.59
5.1.60.0100.02713.59
5.1.50.0000.05013.59
5.1.40.0030.03713.59
5.1.30.0070.04313.59
5.1.20.0070.04713.59
5.1.10.0100.05313.59
5.1.00.0170.04713.59
5.0.50.0000.04313.59
5.0.40.0070.02713.59
5.0.30.0030.06713.59
5.0.20.0000.05013.59
5.0.10.0030.04713.59
5.0.00.0030.06313.59
4.4.90.0100.02713.59
4.4.80.0000.03713.59
4.4.70.0000.03713.59
4.4.60.0030.03013.59
4.4.50.0030.03313.59
4.4.40.0000.04713.59
4.4.30.0070.03013.59
4.4.20.0030.03013.59
4.4.10.0030.03313.59
4.4.00.0130.02013.59
4.3.110.0000.03713.59
4.3.100.0030.03313.59
4.3.90.0030.03313.59
4.3.80.0070.04713.59
4.3.70.0000.04013.59
4.3.60.0000.03313.59
4.3.50.0030.03313.59
4.3.40.0030.05013.59
4.3.30.0000.03713.59
4.3.20.0000.03713.59
4.3.10.0070.03013.59
4.3.00.0070.03013.59

preferences:
40.55 ms | 401 KiB | 5 Q