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() { $this->checkConsistenz(); } 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 \n"; $fields[(3 * ($columnIndex / 3)) + ($rowIndex / 3)][] = $cell; } } print_r($fields); foreach ($rows 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(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)
8.3.60.0080.01218.43
8.3.50.0160.00721.98
8.3.40.0080.00818.96
8.3.30.0000.01520.29
8.3.20.0060.00318.68
8.3.10.0030.00621.22
8.3.00.0080.00019.92
8.2.180.0160.00318.54
8.2.170.0070.00722.96
8.2.160.0130.00720.35
8.2.150.0080.00024.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0040.00419.83
8.2.110.0070.00322.04
8.2.100.0080.00417.97
8.2.90.0000.00819.36
8.2.80.0040.00419.31
8.2.70.0030.00617.75
8.2.60.0050.00317.93
8.2.50.0000.00818.07
8.2.40.0030.00619.88
8.2.30.0000.00719.54
8.2.20.0000.00917.76
8.2.10.0030.00517.84
8.2.00.0050.00317.77
8.1.280.0040.01125.92
8.1.270.0080.00023.99
8.1.260.0040.00426.35
8.1.250.0050.00328.09
8.1.240.0070.00322.46
8.1.230.0070.00422.75
8.1.220.0050.00318.77
8.1.210.0050.00318.92
8.1.200.0030.00717.36
8.1.190.0040.00417.41
8.1.180.0000.00818.10
8.1.170.0060.00318.59
8.1.160.0040.00418.97
8.1.150.0030.00518.59
8.1.140.0040.00417.38
8.1.130.0030.00317.85
8.1.120.0040.00417.55
8.1.110.0030.00517.37
8.1.100.0080.00017.40
8.1.90.0030.00517.45
8.1.80.0030.00617.39
8.1.70.0000.00717.41
8.1.60.0040.00417.63
8.1.50.0000.00817.54
8.1.40.0040.00417.53
8.1.30.0040.00417.71
8.1.20.0050.00517.59
8.1.10.0080.00017.61
8.1.00.0060.00417.52
8.0.300.0070.00020.15
8.0.290.0000.00717.28
8.0.280.0000.00718.53
8.0.270.0050.00317.30
8.0.260.0030.00316.86
8.0.250.0000.00717.04
8.0.240.0000.00816.96
8.0.230.0000.00816.96
8.0.220.0000.00716.91
8.0.210.0000.00716.95
8.0.200.0000.00716.86
8.0.190.0040.00416.90
8.0.180.0030.00616.86
8.0.170.0040.00416.86
8.0.160.0000.00716.93
8.0.150.0040.00416.91
8.0.140.0080.00016.76
8.0.130.0030.00313.45
8.0.120.0060.00316.88
8.0.110.0000.00716.91
8.0.100.0000.00816.95
8.0.90.0030.00616.97
8.0.80.0120.00316.89
8.0.70.0050.00316.92
8.0.60.0040.00416.78
8.0.50.0070.00016.80
8.0.30.0170.00217.09
8.0.20.0270.01417.40
8.0.10.0040.00416.91
8.0.00.0150.00716.56
7.4.330.0050.00016.72
7.4.320.0030.00316.65
7.4.300.0030.00316.46
7.4.290.0040.00416.68
7.4.280.0070.00016.59
7.4.270.0000.00716.50
7.4.260.0030.00313.34
7.4.250.0040.00416.47
7.4.240.0070.00016.57
7.4.230.0040.00416.75
7.4.220.0150.00616.62
7.4.210.0060.01016.60
7.4.200.0030.00516.46
7.4.190.0000.00716.77
7.4.160.0090.01416.72
7.4.150.0180.00317.40
7.4.140.0050.01417.86
7.4.130.0120.00716.66
7.4.120.0090.00816.46
7.4.110.0090.00916.51
7.4.100.0190.00016.61
7.4.90.0110.00716.45
7.4.80.0120.00919.39
7.4.70.0100.01416.57
7.4.60.0140.00416.52
7.4.50.0040.00416.46
7.4.40.0090.00922.77
7.4.30.0090.00916.75
7.4.00.0030.01314.86
7.3.330.0030.00313.22
7.3.320.0060.00013.27
7.3.310.0040.00416.41
7.3.300.0070.00016.32
7.3.290.0070.01016.40
7.3.280.0080.01116.43
7.3.270.0120.00617.40
7.3.260.0140.00718.24
7.3.250.0090.01416.50
7.3.240.0080.01016.60
7.3.230.0080.01116.42
7.3.210.0070.01316.63
7.3.200.0210.00419.39
7.3.190.0130.01016.57
7.3.180.0070.01416.65
7.3.170.0030.01216.60
7.3.160.0060.01016.54
7.3.120.0000.01615.16
7.3.110.0140.00014.90
7.3.100.0030.01014.80
7.3.90.0040.00714.61
7.3.80.0060.00614.85
7.3.70.0060.00614.61
7.3.60.0030.00514.95
7.3.50.0000.01014.86
7.3.40.0060.00314.90
7.3.30.0100.00414.84
7.3.20.0120.00016.52
7.3.10.0030.01016.64
7.3.00.0030.01116.66
7.2.330.0130.00716.75
7.2.320.0120.00816.89
7.2.310.0140.00816.50
7.2.300.0130.00416.55
7.2.290.0060.00916.75
7.2.240.0090.00915.14
7.2.230.0040.01115.43
7.2.220.0070.00714.90
7.2.210.0030.01415.11
7.2.200.0060.00915.23
7.2.190.0070.00714.86
7.2.180.0000.00815.27
7.2.170.0030.01314.89
7.2.160.0030.00615.18
7.2.150.0090.00616.89
7.2.140.0030.01017.02
7.2.130.0060.00816.97
7.2.120.0080.00517.01
7.2.110.0100.00416.83
7.2.100.0050.01116.79
7.2.90.0070.01116.87
7.2.80.0050.01316.98
7.2.70.0090.00517.04
7.2.60.0070.00616.88
7.2.50.0070.00716.83
7.2.40.0080.00516.97
7.2.30.0030.01116.91
7.2.20.0070.00917.01
7.2.10.0050.01016.81
7.2.00.0040.00917.80
7.1.330.0030.01315.69
7.1.320.0100.00015.63
7.1.310.0030.00516.09
7.1.300.0070.00715.52
7.1.290.0090.00915.88
7.1.280.0070.00715.80
7.1.270.0030.00715.77
7.1.260.0030.01015.96
7.1.250.0070.00515.84
7.1.200.0090.00315.90
7.1.100.0090.00418.02
7.1.70.0000.00716.87
7.1.60.0110.01419.24
7.1.50.0140.01016.69
7.1.00.0030.05722.35
7.0.200.0030.00716.53
7.0.140.0070.07022.08
7.0.100.0070.07019.95
7.0.90.0130.07319.92
7.0.80.0170.08020.00
7.0.70.0100.08020.17
7.0.60.0170.07020.09
7.0.50.0070.06320.39
7.0.40.0200.04020.02
7.0.30.0070.08720.20
7.0.20.0230.07720.14
7.0.10.0170.07020.04
7.0.00.0070.07020.09
5.6.280.0070.07320.86
5.6.250.0070.08020.79
5.6.240.0030.09020.62
5.6.230.0200.06020.73
5.6.220.0200.07320.51
5.6.210.0130.08020.70
5.6.200.0130.07720.99
5.6.190.0170.06021.18
5.6.180.0030.05721.11
5.6.170.0230.06321.14
5.6.160.0070.06721.14
5.6.150.0000.09321.09
5.6.140.0170.04021.07
5.6.130.0100.08020.96
5.6.120.0130.06321.17
5.6.110.0130.05321.14
5.6.100.0100.07721.05
5.6.90.0070.08021.09
5.6.80.0070.08720.38
5.6.70.0230.07320.49
5.6.60.0030.07320.34
5.6.50.0100.07720.59
5.6.40.0030.07020.39
5.6.30.0130.08020.42
5.6.20.0030.08320.28
5.6.10.0070.08020.36
5.6.00.0070.08320.52
5.5.380.0130.07020.58
5.5.370.0070.06720.39
5.5.360.0270.06320.38
5.5.350.0100.08320.49
5.5.340.0170.07720.92
5.5.330.0100.05720.87
5.5.320.0070.05720.77
5.5.310.0100.07720.91
5.5.300.0100.07720.96
5.5.290.0100.08320.90
5.5.280.0170.04320.90
5.5.270.0170.08020.83
5.5.260.0030.08020.95
5.5.250.0000.09020.64
5.5.240.0130.04320.31
5.5.230.0070.07720.30
5.5.220.0100.06320.24
5.5.210.0130.07020.32
5.5.200.0070.07720.13
5.5.190.0170.07020.26
5.5.180.0130.07720.18
5.5.160.0100.08020.12
5.5.150.0030.09020.25
5.5.140.0170.07020.25
5.5.130.0070.08320.27
5.5.120.0070.08020.27
5.5.110.0000.04320.16
5.5.100.0070.07020.14
5.5.90.0100.07020.20
5.5.80.0100.07020.20
5.5.70.0000.05020.11
5.5.60.0100.07320.00
5.5.50.0130.06320.05
5.5.40.0030.04020.18
5.5.30.0030.04020.04
5.5.20.0100.06719.96
5.5.10.0070.03720.15
5.5.00.0100.07320.08
5.4.450.0070.07719.20
5.4.440.0070.08319.41
5.4.430.0070.08319.50
5.4.420.0030.08319.57
5.4.410.0130.07019.43
5.4.400.0130.06719.21
5.4.390.0100.04719.23
5.4.380.0170.06019.13
5.4.370.0100.07719.07
5.4.360.0200.05719.13
5.4.350.0070.08319.13
5.4.340.0030.08319.02
5.4.320.0130.07018.85
5.4.310.0130.06719.23
5.4.300.0130.07319.13
5.4.290.0070.07318.94
5.4.280.0070.06319.14
5.4.270.0130.07019.02
5.4.260.0100.07019.21
5.4.250.0030.04019.02
5.4.240.0200.06318.89
5.4.230.0030.08319.11
5.4.220.0070.07018.94
5.4.210.0170.06719.03
5.4.200.0070.04018.91
5.4.190.0100.07319.02
5.4.180.0070.07719.07
5.4.170.0070.07019.08
5.4.160.0100.05019.19
5.4.150.0030.07019.06
5.4.140.0030.05316.48
5.4.130.0100.05716.32
5.4.120.0030.05316.48
5.4.110.0030.03716.43
5.4.100.0030.05016.38
5.4.90.0100.03016.57
5.4.80.0030.03716.54
5.4.70.0070.07016.31
5.4.60.0100.07016.39
5.4.50.0030.07716.41
5.4.40.0070.06016.49
5.4.30.0070.07316.42
5.4.20.0070.07016.52
5.4.10.0100.06716.51
5.4.00.0000.04315.99
5.3.290.0170.05014.85
5.3.280.0100.06014.59
5.3.270.0100.07314.79
5.3.260.0030.06014.74
5.3.250.0070.07714.73
5.3.240.0100.07714.76
5.3.230.0030.04714.68
5.3.220.0170.07014.65
5.3.210.0100.07714.64
5.3.200.0070.06714.68
5.3.190.0030.08314.66
5.3.180.0100.06714.55
5.3.170.0100.07014.73
5.3.160.0130.05314.68
5.3.150.0070.07014.62
5.3.140.0070.03714.67
5.3.130.0070.08014.68
5.3.120.0030.04714.54
5.3.110.0070.03714.67
5.3.100.0030.08714.19
5.3.90.0070.06014.08
5.3.80.0100.05014.14
5.3.70.0000.05014.01
5.3.60.0030.05714.05
5.3.50.0070.06314.06
5.3.40.0030.04314.07
5.3.30.0030.04014.00
5.3.20.0070.03313.70
5.3.10.0030.04713.71
5.3.00.0100.06713.84
5.2.170.0000.04012.83
5.2.160.0100.06012.83
5.2.150.0030.03012.83
5.2.140.0000.03712.83
5.2.130.0030.03012.83
5.2.120.0100.04712.83
5.2.110.0100.05312.83
5.2.100.0000.03012.83
5.2.90.0000.05712.83
5.2.80.0100.06312.83
5.2.70.0070.04712.83
5.2.60.0000.03712.83
5.2.50.0030.03712.83
5.2.40.0100.04312.83
5.2.30.0070.06012.83
5.2.20.0030.04312.83
5.2.10.0000.04312.83
5.2.00.0030.06712.83
5.1.60.0030.05712.83
5.1.50.0000.04712.83
5.1.40.0070.05312.83
5.1.30.0030.06012.83
5.1.20.0000.06312.83
5.1.10.0170.04312.83
5.1.00.0100.04312.83
5.0.50.0070.04012.83
5.0.40.0030.04012.83
5.0.30.0070.06012.83
5.0.20.0070.02712.83
5.0.10.0100.04012.83
5.0.00.0100.06312.83
4.4.90.0000.03012.83
4.4.80.0100.02712.83
4.4.70.0070.02312.83
4.4.60.0070.02712.83
4.4.50.0030.03012.83
4.4.40.0000.04312.83
4.4.30.0030.03712.83
4.4.20.0030.03312.83
4.4.10.0000.03012.83
4.4.00.0030.04712.83
4.3.110.0000.03712.83
4.3.100.0000.02712.83
4.3.90.0070.02712.83
4.3.80.0000.03312.83
4.3.70.0000.02712.83
4.3.60.0000.02012.83
4.3.50.0000.03712.83
4.3.40.0000.04012.83
4.3.30.0000.03712.83
4.3.20.0000.03012.83
4.3.10.0030.03012.83
4.3.00.0000.03312.83

preferences:
39.65 ms | 401 KiB | 5 Q