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; // 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::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)
8.3.60.0070.01416.47
8.3.50.0110.00822.12
8.3.40.0090.00618.88
8.3.30.0100.00719.09
8.3.20.0080.00020.29
8.3.10.0040.00423.54
8.3.00.0000.01017.75
8.2.180.0040.01118.41
8.2.170.0040.01122.96
8.2.160.0000.01420.27
8.2.150.0000.00824.18
8.2.140.0000.00824.66
8.2.130.0130.00326.16
8.2.120.0040.00422.12
8.2.110.0000.00822.25
8.2.100.0070.00417.84
8.2.90.0080.00019.17
8.2.80.0000.00817.97
8.2.70.0000.00817.63
8.2.60.0040.00418.04
8.2.50.0040.00418.07
8.2.40.0050.00218.34
8.2.30.0040.00418.21
8.2.20.0000.00917.78
8.2.10.0080.00017.64
8.2.00.0050.00217.80
8.1.280.0170.00325.92
8.1.270.0060.00323.88
8.1.260.0000.01026.35
8.1.250.0040.00428.09
8.1.240.0000.01023.96
8.1.230.0030.00919.21
8.1.220.0090.00017.74
8.1.210.0000.00818.77
8.1.200.0070.00417.25
8.1.190.0030.00517.54
8.1.180.0050.00318.10
8.1.170.0060.00318.64
8.1.160.0030.00522.09
8.1.150.0040.00418.62
8.1.140.0040.00417.48
8.1.130.0000.00717.86
8.1.120.0070.00017.48
8.1.110.0040.00417.48
8.1.100.0000.00817.48
8.1.90.0050.00217.46
8.1.80.0000.00717.50
8.1.70.0040.00417.34
8.1.60.0060.00317.56
8.1.50.0050.00317.54
8.1.40.0060.00317.44
8.1.30.0050.00517.66
8.1.20.0000.00817.70
8.1.10.0030.00617.50
8.1.00.0000.00717.43
8.0.300.0070.00018.77
8.0.290.0000.00717.05
8.0.280.0040.00318.43
8.0.270.0070.00017.21
8.0.260.0040.00416.72
8.0.250.0000.00717.00
8.0.240.0050.00216.89
8.0.230.0040.00416.98
8.0.220.0070.00016.91
8.0.210.0040.00416.82
8.0.200.0030.00316.91
8.0.190.0000.00816.96
8.0.180.0000.00816.96
8.0.170.0030.00516.98
8.0.160.0040.00416.98
8.0.150.0000.00716.72
8.0.140.0080.00016.88
8.0.130.0060.00313.31
8.0.120.0040.00416.76
8.0.110.0040.00416.99
8.0.100.0000.00716.96
8.0.90.0000.00816.72
8.0.80.0100.00316.98
8.0.70.0040.00416.74
8.0.60.0000.00716.82
8.0.50.0030.00516.88
8.0.30.0110.00617.13
8.0.20.0070.01617.40
8.0.10.0070.00017.11
8.0.00.0040.01416.77
7.4.330.0050.00015.00
7.4.320.0000.00616.66
7.4.300.0030.00316.71
7.4.290.0030.00716.48
7.4.280.0000.00716.62
7.4.270.0000.00716.64
7.4.260.0070.00016.48
7.4.250.0000.00716.48
7.4.240.0020.00516.58
7.4.230.0000.00716.63
7.4.220.0100.00716.73
7.4.210.0120.00516.60
7.4.200.0000.00716.71
7.4.190.0030.00516.39
7.4.160.0080.00816.63
7.4.150.0070.01017.40
7.4.140.0290.00817.86
7.4.130.0190.01316.53
7.4.120.0090.00916.59
7.4.110.0100.00716.50
7.4.100.0080.00816.45
7.4.90.0030.01416.56
7.4.80.0090.01419.39
7.4.70.0140.00316.38
7.4.60.0060.01516.34
7.4.50.0050.00216.33
7.4.40.0100.00722.77
7.4.30.0000.01616.51
7.4.00.0120.00314.87
7.3.330.0000.00513.39
7.3.320.0000.00613.33
7.3.310.0000.00716.49
7.3.300.0030.00316.38
7.3.290.0100.00516.40
7.3.280.0080.01116.34
7.3.270.0180.00017.40
7.3.260.0060.01016.63
7.3.250.0100.00916.40
7.3.240.0030.01516.45
7.3.230.0140.00316.40
7.3.210.0160.00016.50
7.3.200.0110.00616.61
7.3.190.0110.00616.60
7.3.180.0080.00816.48
7.3.170.0130.00316.50
7.3.160.0180.00616.33
7.3.120.0130.00314.68
7.2.330.0060.01016.57
7.2.320.0110.00616.44
7.2.310.0220.00316.52
7.2.300.0030.01316.81
7.2.290.0080.01116.64
7.2.00.0110.01119.45
7.1.200.0040.00715.64
7.1.100.0030.01018.18
7.1.70.0050.00317.30
7.1.60.0100.01619.31
7.1.50.0070.01417.10
7.1.00.0070.07322.40
7.0.200.0080.00316.95
7.0.140.0130.06321.92
7.0.100.0030.04020.12
7.0.90.0070.04319.96
7.0.80.0000.05020.06
7.0.70.0170.04319.93
7.0.60.0100.03720.12
7.0.50.0070.05020.27
7.0.40.0100.03720.17
7.0.30.0030.04320.11
7.0.20.0070.04320.08
7.0.10.0030.04720.07
7.0.00.0100.04020.03
5.6.280.0030.07320.81
5.6.250.0070.03320.65
5.6.240.0070.04720.54
5.6.230.0130.04320.78
5.6.220.0070.04320.64
5.6.210.0070.04020.68
5.6.200.0000.04321.05
5.6.190.0000.05321.20
5.6.180.0030.04721.10
5.6.170.0000.04721.21
5.6.160.0000.04721.06
5.6.150.0070.04021.15
5.6.140.0070.04020.96
5.6.130.0100.05721.06
5.6.120.0100.05321.14
5.6.110.0070.06021.04
5.6.100.0070.04721.05
5.6.90.0100.07321.05
5.6.80.0030.05020.35
5.6.70.0100.04020.44
5.6.60.0130.04320.34
5.6.50.0030.06320.47
5.6.40.0130.03320.48
5.6.30.0070.05020.46
5.6.20.0030.05020.42
5.6.10.0030.04720.35
5.6.00.0100.04720.38
5.5.380.0000.06020.43
5.5.370.0070.05320.58
5.5.360.0000.05020.38
5.5.350.0030.04320.45
5.5.340.0130.06320.97
5.5.330.0070.04020.81
5.5.320.0030.05720.90
5.5.310.0000.05020.86
5.5.300.0030.06020.79
5.5.290.0070.05020.94
5.5.280.0030.05320.91
5.5.270.0070.06320.64
5.5.260.0030.05320.82
5.5.250.0100.05020.75
5.5.240.0100.03720.15
5.5.230.0030.05320.19
5.5.220.0100.03720.05
5.5.210.0100.03720.19
5.5.200.0000.05020.31
5.5.190.0030.06320.22
5.5.180.0030.05320.26
5.5.160.0000.06020.29
5.5.150.0100.03320.27
5.5.140.0230.03720.18
5.5.130.0070.04020.18
5.5.120.0100.04720.18
5.5.110.0170.04320.27
5.5.100.0170.06320.09
5.5.90.0100.06020.10
5.5.80.0100.05320.11
5.5.70.0100.06020.19
5.5.60.0070.04320.09
5.5.50.0100.04320.08
5.5.40.0030.04319.96
5.5.30.0030.05320.08
5.5.20.0130.06320.09
5.5.10.0070.04320.07
5.5.00.0100.04320.13
5.4.450.0070.04719.51
5.4.440.0100.06719.45
5.4.430.0030.05019.55
5.4.420.0070.05319.53
5.4.410.0070.06019.24
5.4.400.0030.04319.16
5.4.390.0070.06019.19
5.4.380.0170.05319.07
5.4.370.0030.05019.09
5.4.360.0000.06719.13
5.4.350.0100.06719.13
5.4.340.0070.05018.90
5.4.320.0100.05718.95
5.4.310.0030.04019.00
5.4.300.0200.05319.03
5.4.290.0170.03719.12
5.4.280.0100.03718.95
5.4.270.0130.05319.18
5.4.260.0130.06019.20
5.4.250.0130.06018.84
5.4.240.0070.04019.11
5.4.230.0030.04018.89
5.4.220.0130.07019.13
5.4.210.0000.07319.08
5.4.200.0070.05019.22
5.4.190.0130.03319.11
5.4.180.0100.03719.03
5.4.170.0000.05719.02
5.4.160.0070.04719.18
5.4.150.0070.05018.85
5.4.140.0070.04316.51
5.4.130.0030.05016.50
5.4.120.0000.04016.46
5.4.110.0070.04716.55
5.4.100.0030.03716.50
5.4.90.0070.04716.45
5.4.80.0070.05316.55
5.4.70.0070.03716.48
5.4.60.0000.04716.54
5.4.50.0100.04316.53
5.4.40.0100.06016.30
5.4.30.0070.04016.45
5.4.20.0170.04316.34
5.4.10.0030.06016.41
5.4.00.0000.05015.69
5.3.290.0070.07014.84
5.3.280.0070.04314.74
5.3.270.0030.06314.70
5.3.260.0100.05314.69
5.3.250.0000.04014.72
5.3.240.0130.05314.63
5.3.230.0100.03314.63
5.3.220.0070.04714.59
5.3.210.0100.04014.57
5.3.200.0030.04014.70
5.3.190.0030.05314.71
5.3.180.0000.05714.58
5.3.170.0030.04014.75
5.3.160.0030.06014.72
5.3.150.0000.05714.68
5.3.140.0030.06714.65
5.3.130.0070.03714.61
5.3.120.0030.03714.57
5.3.110.0070.04314.60
5.3.100.0030.04014.07
5.3.90.0000.04314.20
5.3.80.0070.05313.98
5.3.70.0100.05714.05
5.3.60.0030.04314.16
5.3.50.0100.03013.89
5.3.40.0000.04714.00
5.3.30.0130.06313.93
5.3.20.0000.04013.84
5.3.10.0070.03313.69
5.3.00.0030.03713.67
5.2.170.0070.06711.18
5.2.160.0100.04711.33
5.2.150.0100.05711.26
5.2.140.0130.02711.11
5.2.130.0030.05311.08
5.2.120.0030.03011.16
5.2.110.0000.03011.01
5.2.100.0030.03311.13
5.2.90.0100.03011.24
5.2.80.0030.03311.25
5.2.70.0070.03311.07
5.2.60.0000.03311.09
5.2.50.0030.03011.13
5.2.40.0070.02710.96
5.2.30.0000.03311.11
5.2.20.0030.03011.07
5.2.10.0030.03311.00
5.2.00.0030.02710.66
5.1.60.0030.02310.66
5.1.50.0000.03010.66
5.1.40.0030.02010.66
5.1.30.0000.05310.66
5.1.20.0000.02310.66
5.1.10.0030.02310.66
5.1.00.0000.02310.66
5.0.50.0000.02010.66
5.0.40.0030.01710.66
5.0.30.0000.03710.66
5.0.20.0000.01710.66
5.0.10.0000.02010.66
5.0.00.0000.03010.66
4.4.90.0030.01310.66
4.4.80.0030.01310.66
4.4.70.0000.01710.66
4.4.60.0030.01310.66
4.4.50.0100.00710.66
4.4.40.0100.01710.66
4.4.30.0030.01310.66
4.4.20.0000.02010.66
4.4.10.0030.01310.66
4.4.00.0030.02310.66
4.3.110.0000.01710.66
4.3.100.0030.01710.66
4.3.90.0030.01310.66
4.3.80.0030.02310.66
4.3.70.0030.01310.66
4.3.60.0070.01010.66
4.3.50.0000.01710.66
4.3.40.0000.02010.66
4.3.30.0070.02310.66
4.3.20.0000.01710.66
4.3.10.0030.01310.66
4.3.00.0000.01710.66

preferences:
55.02 ms | 400 KiB | 5 Q