3v4l.org

run code in 300+ PHP versions simultaneously
<?php class SudokuSolver { protected $sudokuColumns; public function __construct ($sudoku) { $this->sudokuColumns = $sudoku; } protected static function getNumbers () { return array_flip(str_split("123456789")); } // could be static as well public function printOut ($sudoku) { foreach ($sudoku as $column) { foreach ($column as $cell) { echo "|"; if (null !== $cell) { echo $cell; } else { echo " "; } } echo "|\n"; } } public function solve() { if (!$this->checkConsistenz()) { throw new Exception("inconsistent data!"); } } protected function checkConsistenz () { $columns = $this->sudokuColumns; foreach ($columns as $columnIndex => $column) { if (!$this->checkLine($columnIndex,$column)) { return false; } } // 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 => $row) { if (!$this->checkLine($rowIndex,$row)) { return false; } } // check field -> own method $fields = array(); foreach ($columns as $columnIndex => $column) { foreach ($column as $rowIndex => $cell) { //echo "(3 * ($columnIndex / 3)) + ($rowIndex / 3) = ". (3 * ($columnIndex / 3)) ." + ". ($rowIndex / 3) ."\n"; $fields[(3 * intval($columnIndex / 3)) + intval($rowIndex / 3)][] = $cell; } } print_r($fields); foreach ($fields as $rowIndex => $row) { if (!$this->checkLine($rowIndex,$row)) { return false; } } return true; } protected function checkLine ($rowIndex, $row) { $numbers = self::getNumbers(); echo "checking $rowIndex..\n"; foreach ($row as $column) { if (null === $column) { continue; } //echo "$column , $numbers\n" . var_export(strpos($numbers,$column),true); if (!array_key_exists($column,$numbers)) { return false; } unset($numbers[$column]); } return true; } } $sudoku = array(); $sudoku[] = array(null,3,null, null,null,null, null,null,null); $sudoku[] = array(3,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)
8.3.70.0070.01117.00
8.3.60.0090.00617.00
8.3.50.0100.01016.62
8.3.40.0150.00018.83
8.3.30.0180.00418.76
8.3.20.0050.00518.54
8.3.10.0050.00320.64
8.3.00.0050.00319.51
8.2.180.0090.01217.00
8.2.170.0100.01022.96
8.2.160.0070.00721.18
8.2.150.0050.00324.18
8.2.140.0040.00424.66
8.2.130.0060.00326.16
8.2.120.0080.00019.83
8.2.110.0100.00021.12
8.2.100.0120.00018.03
8.2.90.0050.00519.17
8.2.80.0060.00318.16
8.2.70.0040.00417.75
8.2.60.0040.00718.05
8.2.50.0040.00418.07
8.2.40.0000.00818.34
8.2.30.0100.00018.18
8.2.20.0000.00717.95
8.2.10.0040.00417.85
8.2.00.0030.00917.87
8.1.280.0070.00725.92
8.1.270.0040.00424.66
8.1.260.0040.00426.35
8.1.250.0110.00028.09
8.1.240.0040.00719.26
8.1.230.0070.00721.04
8.1.220.0080.00017.79
8.1.210.0000.00818.89
8.1.200.0070.00317.47
8.1.190.0040.00417.64
8.1.180.0040.00418.10
8.1.170.0040.00418.75
8.1.160.0000.00718.94
8.1.150.0040.00418.70
8.1.140.0000.00817.45
8.1.130.0000.00717.93
8.1.120.0080.00017.54
8.1.110.0040.00417.49
8.1.100.0000.00817.54
8.1.90.0080.00017.53
8.1.80.0040.00417.50
8.1.70.0030.00317.46
8.1.60.0030.00517.63
8.1.50.0040.00417.43
8.1.40.0030.00517.47
8.1.30.0000.00817.69
8.1.20.0030.00517.57
8.1.10.0040.00417.48
8.1.00.0030.00517.54
8.0.300.0050.00320.15
8.0.290.0040.00416.88
8.0.280.0030.00518.56
8.0.270.0030.00317.31
8.0.260.0030.00317.00
8.0.250.0040.00416.96
8.0.240.0040.00417.10
8.0.230.0050.00217.09
8.0.220.0040.00416.88
8.0.210.0000.00716.99
8.0.200.0050.00217.05
8.0.190.0000.00717.13
8.0.180.0040.00417.03
8.0.170.0050.00317.02
8.0.160.0040.00417.13
8.0.150.0000.00816.85
8.0.140.0030.00516.86
8.0.130.0000.00713.40
8.0.120.0050.00216.89
8.0.110.0040.00416.88
8.0.100.0040.00416.86
8.0.90.0060.00317.00
8.0.80.0080.00817.03
8.0.70.0070.00017.07
8.0.60.0040.00417.00
8.0.50.0080.00016.93
8.0.30.0120.00917.02
8.0.20.0070.01217.05
8.0.10.0050.00216.94
8.0.00.0150.00316.84
7.4.330.0000.00512.93
7.4.320.0000.00716.66
7.4.300.0030.00316.56
7.4.290.0090.00016.64
7.4.280.0040.00416.62
7.4.270.0000.00816.66
7.4.260.0060.00013.33
7.4.250.0000.00916.54
7.4.240.0000.00716.51
7.4.230.0040.00416.48
7.4.220.0090.00916.55
7.4.210.0080.00916.63
7.4.200.0080.00016.61
7.4.190.0040.00416.52
7.4.160.0090.01516.62
7.4.150.0030.01516.73
7.4.140.0110.00816.54
7.4.130.0120.00816.63
7.4.120.0110.00616.54
7.4.110.0040.01316.60
7.4.100.0140.00916.67
7.4.90.0130.00416.65
7.4.80.0120.01216.71
7.4.70.0120.01216.45
7.4.60.0090.00916.64
7.4.50.0030.00316.71
7.4.40.0090.00316.73
7.4.30.0100.00716.69
7.4.00.0130.00515.06
7.3.330.0060.00013.45
7.3.320.0000.00513.45
7.3.310.0080.00016.49
7.3.300.0000.00716.36
7.3.290.0090.01216.54
7.3.280.0080.01116.50
7.3.270.0120.00616.38
7.3.260.0130.00916.65
7.3.250.0140.00516.58
7.3.240.0090.00616.50
7.3.230.0070.01016.66
7.3.210.0110.00716.73
7.3.200.0090.00919.39
7.3.190.0130.00716.53
7.3.180.0110.00616.54
7.3.170.0060.01116.55
7.3.160.0110.00716.57
7.3.120.0090.00715.02
7.3.110.0130.00614.91
7.3.100.0120.00914.97
7.3.90.0040.01114.86
7.3.80.0060.01014.95
7.3.70.0040.00814.57
7.3.60.0040.01114.85
7.3.50.0090.00614.92
7.3.40.0090.00314.89
7.3.30.0030.00914.72
7.3.20.0060.01216.69
7.3.10.0080.00416.58
7.3.00.0050.01016.61
7.2.330.0050.01216.73
7.2.320.0120.00916.82
7.2.310.0100.01316.66
7.2.300.0100.00716.57
7.2.290.0140.00316.67
7.2.250.0040.01515.07
7.2.240.0030.01815.07
7.2.230.0060.01214.95
7.2.220.0050.00515.05
7.2.210.0090.00615.22
7.2.200.0070.00715.08
7.2.190.0100.00315.19
7.2.180.0060.01314.84
7.2.170.0070.00714.85
7.2.130.0040.01516.96
7.2.120.0000.01317.00
7.2.110.0030.01017.00
7.2.100.0100.00316.69
7.2.90.0090.00916.82
7.2.80.0080.00417.03
7.2.70.0030.01217.05
7.2.60.0060.00816.87
7.2.50.0050.00816.99
7.2.40.0120.00616.92
7.2.30.0080.00817.07
7.2.20.0030.01216.85
7.2.10.0060.00917.03
7.2.00.0130.01217.03
7.1.330.0140.00015.89
7.1.320.0030.00915.75
7.1.310.0090.00315.60
7.1.300.0060.00915.69
7.1.290.0120.00615.86
7.1.280.0080.00815.68
7.1.270.0060.00615.64
7.1.260.0100.00315.74
7.1.250.0060.00915.76
7.1.200.0040.01116.00
7.1.100.0070.00718.20
7.1.70.0000.00717.24
7.1.60.0090.01519.40
7.1.50.0070.01316.98
7.1.00.0070.05322.41
7.0.200.0000.00816.90
7.0.140.0070.06721.95
7.0.120.0100.07022.09
7.0.60.0170.07320.07
7.0.50.0070.04717.86
7.0.40.0100.08020.20
7.0.30.0000.06720.14
7.0.20.0030.06020.02
7.0.10.0000.06020.37
7.0.00.0070.05020.23
5.6.280.0000.08020.96
5.6.210.0130.08020.70
5.6.200.0070.03718.18
5.6.190.0100.08020.57
5.6.180.0070.08320.46
5.6.170.0000.05020.62
5.6.160.0130.07320.76
5.6.150.0030.08020.20
5.6.140.0070.08720.33
5.6.130.0130.07320.17
5.6.120.0100.08720.41
5.6.110.0000.04720.39
5.6.100.0100.06720.42
5.6.90.0100.06320.48
5.6.80.0030.06319.55
5.6.70.0000.07319.78
5.6.60.0000.07019.71
5.6.50.0100.04019.56
5.6.40.0100.08719.70
5.6.30.0070.04319.79
5.6.20.0130.07719.53
5.6.10.0100.04719.88
5.6.00.0130.07019.54
5.5.350.0070.07720.54
5.5.340.0100.08318.08
5.5.330.0030.05020.26
5.5.320.0070.04020.31
5.5.310.0070.04320.20
5.5.300.0100.08319.97
5.5.290.0100.05720.03
5.5.280.0030.08720.29
5.5.270.0170.06020.32
5.5.260.0100.08020.19
5.5.250.0170.07319.78
5.5.240.0100.07719.37
5.5.230.0030.07019.50
5.5.220.0070.05319.67
5.5.210.0130.04019.34
5.5.200.0030.08019.57
5.5.190.0100.08319.49
5.5.180.0100.05719.48
5.5.160.0030.04719.52
5.5.150.0130.08019.64
5.5.140.0100.05319.58
5.5.130.0130.06019.47
5.5.120.0070.04319.64
5.5.110.0100.08019.54
5.5.100.0030.07319.24
5.5.90.0130.07019.23
5.5.80.0000.08719.21
5.5.70.0100.05019.41
5.5.60.0030.09019.23
5.5.50.0100.04319.45
5.5.40.0070.04019.46
5.5.30.0070.08019.63
5.5.20.0100.07719.62
5.5.10.0030.08019.45
5.5.00.0100.03719.27
5.4.450.0130.07319.47
5.4.440.0130.08319.44
5.4.430.0100.03719.60
5.4.420.0130.07719.56
5.4.410.0070.04319.27
5.4.400.0030.08019.15
5.4.390.0070.08019.24
5.4.380.0100.07719.18
5.4.370.0100.05019.14
5.4.360.0100.08718.89
5.4.350.0000.07718.95
5.4.340.0030.06718.92
5.4.320.0100.07718.94
5.4.310.0170.06019.15
5.4.300.0030.04719.20
5.4.290.0070.07318.85
5.4.280.0030.04018.92
5.4.270.0070.03719.11
5.4.260.0130.06019.14
5.4.250.0030.08018.85
5.4.240.0030.08019.13
5.4.230.0070.07719.14
5.4.220.0170.07019.04
5.4.210.0070.06319.23
5.4.200.0030.04019.15
5.4.190.0100.04319.14
5.4.180.0130.06719.00
5.4.170.0070.03719.10
5.4.160.0070.05319.06
5.4.150.0170.07318.96
5.4.140.0130.06716.49
5.4.130.0030.04016.60
5.4.120.0200.06016.45
5.4.110.0030.08016.72
5.4.100.0130.04716.32
5.4.90.0070.03316.46
5.4.80.0070.03316.70
5.4.70.0100.07316.57
5.4.60.0030.07716.41
5.4.50.0070.05316.52
5.4.40.0200.06316.46
5.4.30.0000.05016.33
5.4.20.0200.05016.55
5.4.10.0200.06016.51
5.4.00.0100.06015.95
5.3.290.0130.07314.76
5.3.280.0030.05014.66
5.3.270.0030.06714.56
5.3.260.0030.05014.70
5.3.250.0070.04314.70
5.3.240.0030.05714.61
5.3.230.0000.04714.81
5.3.220.0030.06714.63
5.3.210.0070.06014.53
5.3.200.0100.07314.63
5.3.190.0070.03714.55
5.3.180.0130.03014.66
5.3.170.0070.08014.63
5.3.160.0070.07314.64
5.3.150.0100.06714.66
5.3.140.0100.03314.51
5.3.130.0170.07014.62
5.3.120.0070.05014.76
5.3.110.0030.06714.66
5.3.100.0070.04314.17
5.3.90.0230.05714.12
5.3.80.0100.06714.09
5.3.70.0070.04314.13
5.3.60.0030.07013.96
5.3.50.0070.08014.08
5.3.40.0000.04713.92
5.3.30.0070.07713.98
5.3.20.0000.05013.75
5.3.10.0070.07013.71
5.3.00.0100.04713.86
5.2.170.0070.03311.18
5.2.160.0070.05011.22
5.2.150.0070.03311.16
5.2.140.0030.03711.18
5.2.130.0070.02711.07
5.2.120.0100.05011.14
5.2.110.0000.05011.09
5.2.100.0000.03711.32
5.2.90.0070.06311.22
5.2.80.0130.05311.17
5.2.70.0030.06011.16
5.2.60.0000.06311.00
5.2.50.0030.05311.16
5.2.40.0070.05311.12
5.2.30.0030.04310.93
5.2.20.0100.06011.10
5.2.10.0000.07010.99
5.2.00.0070.06010.79
5.1.60.0100.0439.98
5.1.50.0000.0509.98
5.1.40.0100.05010.11
5.1.30.0170.04710.44
5.1.20.0030.03310.61
5.1.10.0070.02710.30
5.1.00.0100.02010.07
5.0.50.0030.0478.70
5.0.40.0070.0378.58
5.0.30.0000.0338.32
5.0.20.0000.0278.27
5.0.10.0000.0408.29
5.0.00.0070.0308.26
4.4.90.0070.0177.14
4.4.80.0030.0377.14
4.4.70.0070.0337.14
4.4.60.0030.0337.14
4.4.50.0000.0377.14
4.4.40.0070.0437.14
4.4.30.0000.0407.14
4.4.20.0030.0177.14
4.4.10.0030.0307.14
4.4.00.0000.0537.14
4.3.110.0030.0207.14
4.3.100.0000.0177.14
4.3.90.0000.0177.14
4.3.80.0030.0237.14
4.3.70.0070.0107.14
4.3.60.0000.0177.14
4.3.50.0000.0177.14
4.3.40.0000.0237.14
4.3.30.0030.0137.14
4.3.20.0030.0177.14
4.3.10.0000.0177.14
4.3.00.0000.0137.14

preferences:
41.27 ms | 401 KiB | 5 Q