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)) + ($rowIndex / 3) = ". (3 * ($columnIndex / 3)) ." + ". ($rowIndex / 3) ."\n"; $fields[(3 * intval($columnIndex / 3)) + intval($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)
8.3.60.0150.00016.63
8.3.50.0100.01217.36
8.3.40.0150.00618.81
8.3.30.0040.01118.85
8.3.20.0090.00018.89
8.3.10.0060.00320.45
8.3.00.0060.00319.15
8.2.180.0100.01316.75
8.2.170.0070.01122.96
8.2.160.0070.00720.52
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0040.00426.16
8.2.120.0080.00022.08
8.2.110.0070.00320.82
8.2.100.0060.00617.91
8.2.90.0060.00319.40
8.2.80.0080.00019.40
8.2.70.0040.00417.61
8.2.60.0000.00818.16
8.2.50.0000.00818.07
8.2.40.0080.00018.12
8.2.30.0080.00018.02
8.2.20.0000.00717.76
8.2.10.0090.00017.78
8.2.00.0040.00417.70
8.1.270.0040.01424.66
8.1.260.0040.00426.35
8.1.250.0050.00328.09
8.1.240.0050.00524.02
8.1.230.0070.00420.85
8.1.220.0040.00417.74
8.1.210.0040.00418.86
8.1.200.0050.00517.48
8.1.190.0040.00417.53
8.1.180.0060.00318.10
8.1.170.0040.00418.86
8.1.160.0040.00418.91
8.1.150.0040.00418.74
8.1.140.0000.00817.47
8.1.130.0040.00417.91
8.1.120.0000.00817.48
8.1.110.0040.00417.54
8.1.100.0000.00717.49
8.1.90.0000.00717.42
8.1.80.0000.00817.48
8.1.70.0040.00417.45
8.1.60.0090.00017.53
8.1.50.0000.00817.54
8.1.40.0000.00817.43
8.1.30.0000.00817.68
8.1.20.0000.00817.65
8.1.10.0050.00517.50
8.1.00.0060.00317.55
8.0.300.0060.00319.90
8.0.290.0070.00016.88
8.0.280.0000.00818.42
8.0.270.0000.00817.21
8.0.260.0070.00016.80
8.0.250.0040.00417.06
8.0.240.0000.00816.90
8.0.230.0000.00716.90
8.0.220.0040.00416.91
8.0.210.0070.00016.93
8.0.200.0030.00316.88
8.0.190.0000.00717.02
8.0.180.0080.00416.93
8.0.170.0030.00716.99
8.0.160.0000.00716.85
8.0.150.0060.00316.78
8.0.140.0060.00616.88
8.0.130.0060.00013.29
8.0.120.0040.00416.91
8.0.110.0000.00816.93
8.0.100.0050.00216.73
8.0.90.0000.00716.74
8.0.80.0100.01216.93
8.0.70.0000.00816.96
8.0.60.0000.00716.82
8.0.50.0030.00516.83
8.0.30.0180.00317.35
8.0.20.0100.01017.09
8.0.10.0040.00416.88
8.0.00.0080.01116.94
7.4.330.0030.00313.04
7.4.320.0000.00716.51
7.4.300.0030.00316.61
7.4.290.0030.00716.59
7.4.280.0060.00316.68
7.4.270.0000.00816.63
7.4.260.0000.00513.30
7.4.250.0040.00416.52
7.4.240.0020.00516.50
7.4.230.0000.00716.44
7.4.220.0160.00616.57
7.4.210.0070.00816.65
7.4.200.0040.00416.73
7.4.190.0070.00016.40
7.4.160.0190.00316.50
7.4.150.0110.01216.48
7.4.140.0130.02216.59
7.4.130.0130.00816.56
7.4.120.0080.01016.59
7.4.110.0130.00716.74
7.4.100.0200.00616.53
7.4.90.0090.00916.48
7.4.80.0130.01316.49
7.4.70.0060.01216.52
7.4.60.0100.00716.64
7.4.50.0030.01016.27
7.4.40.0100.00716.46
7.4.30.0140.00216.40
7.4.00.0060.01214.89
7.3.330.0000.00713.27
7.3.320.0030.00313.41
7.3.310.0000.00716.41
7.3.300.0070.00016.39
7.3.290.0100.00716.33
7.3.280.0120.00716.42
7.3.270.0090.00916.27
7.3.260.0060.01316.56
7.3.250.0120.00916.41
7.3.240.0060.01216.56
7.3.230.0050.01316.25
7.3.210.0140.00716.43
7.3.200.0180.00019.39
7.3.190.0100.01016.57
7.3.180.0030.01316.27
7.3.170.0030.01416.73
7.3.160.0070.01016.48
7.3.120.0060.00914.63
7.2.330.0130.00516.81
7.2.320.0070.01416.90
7.2.310.0120.01616.92
7.2.300.0040.01816.52
7.2.290.0030.01516.71
7.2.60.0070.01016.72
7.1.200.0070.00715.95
7.1.70.0110.00517.20
7.1.60.0030.02119.40
7.1.50.0100.01317.01
7.1.00.0030.07322.32
7.0.200.0040.00416.93
7.0.140.0070.07322.21
7.0.120.0030.07721.97
7.0.60.0100.09019.90
7.0.50.0130.06717.84
7.0.40.0130.04717.76
7.0.30.0100.04717.73
7.0.20.0070.08317.72
7.0.10.0030.04317.73
7.0.00.0130.05017.75
5.6.280.0000.08021.08
5.6.210.0100.08720.50
5.6.200.0000.08718.27
5.6.190.0070.08018.26
5.6.180.0030.04318.19
5.6.170.0030.08018.18
5.6.160.0030.08718.20
5.6.150.0170.07718.20
5.6.140.0130.08018.23
5.6.130.0070.05318.29
5.6.120.0070.08318.17
5.6.110.0030.04718.27
5.6.100.0100.05718.18
5.6.90.0000.09018.15
5.6.80.0000.04717.57
5.6.70.0030.04017.60
5.6.60.0070.04017.57
5.6.50.0070.03717.57
5.6.40.0030.04017.56
5.6.30.0070.03717.55
5.6.20.0030.03717.63
5.6.10.0000.04017.53
5.6.00.0100.03717.63
5.5.350.0330.07720.46
5.5.340.0070.06318.01
5.5.330.0070.08718.08
5.5.320.0130.05718.00
5.5.310.0030.08717.99
5.5.300.0100.08018.00
5.5.290.0000.07017.99
5.5.280.0170.06018.08
5.5.270.0100.08017.95
5.5.260.0030.07318.07
5.5.250.0170.06717.78
5.5.240.0030.05017.37
5.5.230.0030.04017.42
5.5.220.0030.05717.45
5.5.210.0100.03317.36
5.5.200.0000.04017.42
5.5.190.0030.03717.31
5.5.180.0030.04017.39
5.5.160.0000.05317.34
5.5.150.0070.03317.30
5.5.140.0030.03717.43
5.5.130.0000.04017.32
5.5.120.0030.03717.27
5.5.110.0100.03017.32
5.5.100.0070.03317.23
5.5.90.0070.04317.30
5.5.80.0030.03717.24
5.5.70.0070.03317.21
5.5.60.0000.04017.30
5.5.50.0070.03317.24
5.5.40.0030.03717.30
5.5.30.0000.04017.31
5.5.20.0070.03317.24
5.5.10.0030.03717.20
5.5.00.0070.03317.26
5.4.450.0230.03719.38
5.4.440.0200.05719.33
5.4.430.0100.07719.20
5.4.420.0130.07019.64
5.4.410.0170.03019.18
5.4.400.0100.03319.06
5.4.390.0000.04319.09
5.4.380.0000.04019.03
5.4.370.0070.03319.01
5.4.360.0030.03719.05
5.4.350.0000.04019.27
5.4.340.0030.04019.16
5.4.320.0030.04319.03
5.4.310.0030.03718.98
5.4.300.0030.04019.00
5.4.290.0030.03719.09
5.4.280.0030.03718.90
5.4.270.0000.04019.04
5.4.260.0100.03019.01
5.4.250.0000.04019.11
5.4.240.0100.03319.12
5.4.230.0230.01718.94
5.4.220.0030.03719.13
5.4.210.0000.04019.11
5.4.200.0030.03719.26
5.4.190.0030.03719.09
5.4.180.0070.03319.12
5.4.170.0030.03719.12
5.4.160.0070.03318.99
5.4.150.0030.05018.98
5.4.140.0070.03016.47
5.4.130.0030.05716.45
5.4.120.0070.04716.43
5.4.110.0100.07316.42
5.4.100.0100.07716.35
5.4.90.0030.07716.36
5.4.80.0130.07016.38
5.4.70.0070.06016.54
5.4.60.0070.03716.41
5.4.50.0100.05716.61
5.4.40.0100.07016.47
5.4.30.0000.04016.49
5.4.20.0130.05316.58
5.4.10.0070.03716.41
5.4.00.0030.04016.02
5.3.290.0030.04014.79
5.3.280.0030.03714.69
5.3.270.0070.03314.72
5.3.260.0100.04314.72
5.3.250.0070.03714.73
5.3.240.0030.03714.69
5.3.230.0070.05314.66
5.3.220.0030.07014.71
5.3.210.0100.04714.59
5.3.200.0100.07714.71
5.3.190.0070.06714.73
5.3.180.0100.07314.67
5.3.170.0070.07714.58
5.3.160.0070.04314.65
5.3.150.0030.06714.62
5.3.140.0070.04714.59
5.3.130.0070.07314.57
5.3.120.0230.03714.66
5.3.110.0070.06314.68
5.3.100.0100.05013.95
5.3.90.0030.04714.15
5.3.80.0030.04714.13
5.3.70.0030.04014.07
5.3.60.0070.06314.09
5.3.50.0100.05313.91
5.3.40.0100.06714.06
5.3.30.0030.06013.99
5.3.20.0100.03313.97
5.3.10.0100.07013.73
5.3.00.0070.07313.70
5.2.170.0100.06311.06
5.2.160.0070.05711.06
5.2.150.0030.06011.24
5.2.140.0030.05311.20
5.2.130.0100.05011.21
5.2.120.0030.06311.07
5.2.110.0100.06011.07
5.2.100.0070.06011.19
5.2.90.0070.06011.23
5.2.80.0100.05011.17
5.2.70.0030.04011.23
5.2.60.0130.04711.18
5.2.50.0000.04311.05
5.2.40.0030.03011.06
5.2.30.0100.04711.09
5.2.20.0030.06310.98
5.2.10.0030.04710.97
5.2.00.0000.06010.80
5.1.60.0100.05310.13
5.1.50.0100.04710.06
5.1.40.0070.05310.13
5.1.30.0030.05010.48
5.1.20.0000.06710.50
5.1.10.0070.03710.20
5.1.00.0070.03710.13
5.0.50.0070.0408.62
5.0.40.0100.0438.73
5.0.30.0030.0608.40
5.0.20.0030.0478.34
5.0.10.0000.0438.34
5.0.00.0000.0338.34
4.4.90.0100.0278.34
4.4.80.0030.0278.34
4.4.70.0070.0308.34
4.4.60.0000.0238.34
4.4.50.0030.0378.34
4.4.40.0030.0508.34
4.4.30.0030.0378.34
4.4.20.0030.0338.34
4.4.10.0000.0408.34
4.4.00.0070.0278.34
4.3.110.0030.0278.34
4.3.100.0030.0208.34
4.3.90.0030.0378.34
4.3.80.0000.0578.34
4.3.70.0000.0338.34
4.3.60.0070.0278.34
4.3.50.0000.0278.34
4.3.40.0000.0538.34
4.3.30.0030.0138.34
4.3.20.0000.0408.34
4.3.10.0030.0138.34
4.3.00.0000.0178.34

preferences:
44.27 ms | 400 KiB | 5 Q