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)
8.3.70.0130.00316.75
8.3.60.0130.00318.28
8.3.50.0120.00321.98
8.3.40.0040.01118.67
8.3.30.0080.00818.78
8.3.20.0140.00718.90
8.3.10.0030.00621.04
8.3.00.0090.00023.41
8.2.180.0060.01016.75
8.2.170.0080.00818.96
8.2.160.0140.00022.96
8.2.150.0100.00025.66
8.2.140.0060.00324.66
8.2.130.0040.00426.16
8.2.120.0040.00419.79
8.2.110.0070.00320.39
8.2.100.0120.00017.91
8.2.90.0040.00418.34
8.2.80.0060.00318.03
8.2.70.0030.00617.63
8.2.60.0030.00617.93
8.2.50.0000.01418.07
8.2.40.0040.00418.22
8.2.30.0000.00721.23
8.2.20.0030.00617.83
8.2.10.0050.00317.69
8.2.00.0030.00517.77
8.1.280.0130.00625.92
8.1.270.0030.00523.99
8.1.260.0030.00626.35
8.1.250.0030.00528.09
8.1.240.0030.00722.19
8.1.230.0070.00420.97
8.1.220.0040.00417.78
8.1.210.0050.00519.03
8.1.200.0060.00317.36
8.1.190.0000.00917.65
8.1.180.0030.00618.10
8.1.170.0050.00318.51
8.1.160.0000.00818.96
8.1.150.0030.00618.67
8.1.140.0000.00817.49
8.1.130.0030.00317.85
8.1.120.0050.00317.46
8.1.110.0030.00517.52
8.1.100.0040.00417.42
8.1.90.0070.00017.54
8.1.80.0070.00017.40
8.1.70.0040.00417.47
8.1.60.0030.00617.63
8.1.50.0040.00417.57
8.1.40.0030.00617.45
8.1.30.0000.00817.61
8.1.20.0030.00617.70
8.1.10.0060.00317.61
8.1.00.0040.00417.43
8.0.300.0080.00020.34
8.0.290.0000.00817.04
8.0.280.0070.00018.40
8.0.270.0000.00817.29
8.0.260.0040.00416.86
8.0.250.0000.00717.04
8.0.240.0060.00316.89
8.0.230.0050.00316.89
8.0.220.0000.00916.82
8.0.210.0070.00016.96
8.0.200.0030.00317.00
8.0.190.0040.00416.97
8.0.180.0070.00017.00
8.0.170.0000.00716.87
8.0.160.0020.00516.83
8.0.150.0040.00416.94
8.0.140.0060.00316.83
8.0.130.0020.00513.34
8.0.120.0040.00416.90
8.0.110.0080.00016.96
8.0.100.0050.00216.97
8.0.90.0000.00816.99
8.0.80.0090.00616.93
8.0.70.0040.00416.92
8.0.60.0080.00016.73
8.0.50.0060.00316.79
8.0.30.0140.01017.09
8.0.20.0100.01017.40
8.0.10.0070.00016.95
8.0.00.0150.00916.96
7.4.330.0050.00014.71
7.4.320.0030.00316.45
7.4.300.0070.00016.48
7.4.290.0050.00216.68
7.4.280.0000.00716.54
7.4.270.0040.00416.54
7.4.260.0000.00513.22
7.4.250.0040.00416.59
7.4.240.0040.00416.65
7.4.230.0030.00316.64
7.4.220.0060.01116.64
7.4.210.0090.00716.54
7.4.200.0000.00716.35
7.4.190.0050.00316.73
7.4.160.0070.01416.40
7.4.150.0060.01317.40
7.4.140.0110.01117.86
7.4.130.0160.00516.51
7.4.120.0150.00416.63
7.4.110.0100.01016.49
7.4.100.0160.00316.63
7.4.90.0160.00316.52
7.4.80.0090.00919.39
7.4.70.0070.01016.53
7.4.60.0070.01116.56
7.4.50.0030.00616.38
7.4.40.0070.00722.52
7.4.30.0070.01116.56
7.4.00.0130.00514.95
7.3.330.0000.00513.19
7.3.320.0030.00313.32
7.3.310.0070.00016.57
7.3.300.0040.00416.26
7.3.290.0090.01216.40
7.3.280.0100.00616.38
7.3.270.0100.01017.40
7.3.260.0100.01118.24
7.3.250.0110.01116.37
7.3.240.0070.01116.70
7.3.230.0130.00616.47
7.3.210.0090.00916.54
7.3.200.0190.00019.39
7.3.190.0060.01816.38
7.3.180.0130.00316.28
7.3.170.0080.00816.70
7.3.160.0130.00516.46
7.3.120.0080.01014.87
7.3.110.0090.00414.97
7.3.100.0110.00414.84
7.3.90.0080.01215.05
7.3.80.0000.01514.89
7.3.70.0100.00714.82
7.3.60.0030.01015.02
7.3.50.0140.00014.99
7.3.40.0000.01314.88
7.3.30.0100.00014.64
7.3.20.0070.00316.77
7.3.10.0070.00716.41
7.3.00.0060.00316.77
7.2.330.0090.00916.77
7.2.320.0150.00616.83
7.2.310.0160.00916.79
7.2.300.0060.01316.72
7.2.290.0030.01916.56
7.2.250.0110.00715.29
7.2.240.0130.00615.20
7.2.230.0030.01315.34
7.2.220.0130.00714.99
7.2.210.0040.01215.14
7.2.200.0060.00915.23
7.2.190.0100.00615.15
7.2.180.0060.00314.98
7.2.170.0110.00415.28
7.2.60.0140.00016.77
7.2.00.0000.01119.38
7.1.330.0040.01215.95
7.1.320.0030.00615.71
7.1.310.0120.00315.67
7.1.300.0060.00916.03
7.1.290.0060.00615.81
7.1.280.0040.01115.79
7.1.270.0060.00915.85
7.1.260.0030.01315.88
7.1.200.0110.00415.86
7.1.100.0000.00818.11
7.1.70.0150.00317.04
7.1.60.0110.01419.40
7.1.50.0070.01717.14
7.1.00.0070.06322.36
7.0.200.0000.00816.86
7.0.140.0130.06721.95
7.0.70.0300.07321.63
7.0.60.0070.06721.75
7.0.50.0100.08722.18
7.0.40.0130.08020.09
7.0.30.0130.08720.13
7.0.20.0100.08720.15
7.0.10.0070.09020.14
7.0.00.0200.07720.17
5.6.280.0030.07721.12
5.6.220.0070.07720.53
5.6.210.0100.07320.70
5.6.200.0030.08021.07
5.6.190.0200.08321.12
5.6.180.0070.08321.20
5.6.170.0130.08321.05
5.6.160.0100.08321.11
5.6.150.0130.07321.04
5.6.140.0170.08021.09
5.6.130.0030.09020.97
5.6.120.0170.04021.12
5.6.110.0100.08721.04
5.6.100.0170.08021.20
5.6.90.0200.07320.98
5.6.80.0070.08020.56
5.6.70.0100.07320.42
5.6.60.0030.06720.47
5.6.50.0030.08720.38
5.6.40.0070.08020.56
5.6.30.0030.08720.36
5.6.20.0100.08720.50
5.6.10.0030.06320.35
5.6.00.0170.07020.55
5.5.360.0070.08720.46
5.5.350.0130.08320.49
5.5.340.0330.07020.93
5.5.330.0100.05720.88
5.5.320.0130.08320.93
5.5.310.0200.07720.98
5.5.300.0170.07720.95
5.5.290.0170.04720.96
5.5.280.0070.05020.91
5.5.270.0100.06020.81
5.5.260.0100.08720.93
5.5.250.0070.08020.58
5.5.240.0130.07020.29
5.5.230.0030.07720.30
5.5.220.0030.08720.25
5.5.210.0070.08020.31
5.5.200.0100.07720.32
5.5.190.0200.07020.21
5.5.180.0170.07020.27
5.5.160.0070.08320.29
5.5.150.0070.08020.15
5.5.140.0130.07720.19
5.5.130.0000.09020.14
5.5.120.0130.08020.27
5.5.110.0130.07020.11
5.5.100.0030.08320.21
5.5.90.0130.07720.20
5.5.80.0000.07020.19
5.5.70.0070.08020.13
5.5.60.0100.08020.10
5.5.50.0100.07020.15
5.5.40.0170.06720.15
5.5.30.0130.06320.19
5.5.20.0130.05020.08
5.5.10.0030.04720.10
5.5.00.0130.07720.04
5.4.450.0130.08319.37
5.4.440.0100.07319.27
5.4.430.0070.05719.43
5.4.420.0100.08019.34
5.4.410.0130.07719.24
5.4.400.0030.04319.05
5.4.390.0130.07719.20
5.4.380.0170.07019.20
5.4.370.0030.07319.13
5.4.360.0100.08019.21
5.4.350.0070.08018.95
5.4.340.0100.07719.16
5.4.320.0200.06719.03
5.4.310.0030.08019.05
5.4.300.0000.08318.94
5.4.290.0170.07019.30
5.4.280.0030.08719.12
5.4.270.0070.08019.14
5.4.260.0200.07019.05
5.4.250.0100.07019.18
5.4.240.0070.07719.09
5.4.230.0030.08018.98
5.4.220.0130.07319.14
5.4.210.0070.07719.03
5.4.200.0100.08018.94
5.4.190.0100.06719.04
5.4.180.0070.07719.19
5.4.170.0100.07719.20
5.4.160.0070.07719.19
5.4.150.0000.09019.03
5.4.140.0100.06316.41
5.4.130.0070.07716.50
5.4.120.0070.07716.47
5.4.110.0100.08016.54
5.4.100.0130.07016.40
5.4.90.0070.07316.52
5.4.80.0130.07316.52
5.4.70.0000.08016.55
5.4.60.0030.08016.38
5.4.50.0070.07316.42
5.4.40.0070.07716.53
5.4.30.0030.07716.52
5.4.20.0030.06016.37
5.4.10.0100.07016.37
5.4.00.0100.07315.91
5.3.290.0070.08314.79
5.3.280.0100.08014.67
5.3.270.0070.09714.79
5.3.260.0030.05314.69
5.3.250.0070.07714.73
5.3.240.0100.07314.66
5.3.230.0030.08314.58
5.3.220.0070.08014.56
5.3.210.0000.09014.75
5.3.200.0100.07014.72
5.3.190.0070.06014.73
5.3.180.0030.08314.62
5.3.170.0130.07014.74
5.3.160.0130.07714.55
5.3.150.0070.08014.77
5.3.140.0130.07314.73
5.3.130.0100.07714.63
5.3.120.0100.08314.61
5.3.110.0130.06014.71
5.3.100.0030.07714.06
5.3.90.0070.06714.12
5.3.80.0070.07014.11
5.3.70.0130.07314.22
5.3.60.0000.07313.96
5.3.50.0000.05313.95
5.3.40.0100.07713.89
5.3.30.0000.08013.99
5.3.20.0100.05313.77
5.3.10.0030.08013.81
5.3.00.0100.07013.63
5.2.170.0070.06312.41
5.2.160.0070.04012.41
5.2.150.0170.05712.41
5.2.140.0000.06712.41
5.2.130.0030.06312.41
5.2.120.0100.06012.41
5.2.110.0030.06312.41
5.2.100.0030.06312.41
5.2.90.0070.04712.41
5.2.80.0070.05712.41
5.2.70.0100.06312.41
5.2.60.0030.07012.41
5.2.50.0030.06312.41
5.2.40.0100.06012.41
5.2.30.0030.06712.41
5.2.20.0030.06712.41
5.2.10.0070.05712.41
5.2.00.0130.04312.41
5.1.60.0030.05312.41
5.1.50.0030.05712.41
5.1.40.0070.04312.41
5.1.30.0070.04012.41
5.1.20.0070.05712.41
5.1.10.0000.04312.41
5.1.00.0070.04712.41
5.0.50.0030.04012.41
5.0.40.0070.02712.41
5.0.30.0070.05012.41
5.0.20.0070.03012.41
5.0.10.0000.04012.41
5.0.00.0030.06712.41
4.4.90.0030.03012.41
4.4.80.0000.03312.41
4.4.70.0030.03312.41
4.4.60.0000.03712.41
4.4.50.0000.03012.41
4.4.40.0000.03012.41
4.4.30.0030.02712.41
4.4.20.0030.03712.41
4.4.10.0000.03712.41
4.4.00.0030.02712.41
4.3.110.0030.03312.41
4.3.100.0000.02012.41
4.3.90.0030.03012.41
4.3.80.0000.05312.41
4.3.70.0000.03312.41
4.3.60.0000.03712.41
4.3.50.0070.02012.41
4.3.40.0000.05312.41
4.3.30.0000.03312.41
4.3.20.0000.03712.41
4.3.10.0000.03712.41
4.3.00.0030.03312.41

preferences:
98.96 ms | 401 KiB | 5 Q