3v4l.org

run code in 300+ PHP versions simultaneously
<?php class SudokuSolver { const NUMBERS = "123456789"; protected $sudokuColumns; public function __construct ($sudoku) { $this->sudokuColumns = $sudoku; } // could be static as well public function printOut ($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::NUMBERS; echo "checking $rowIndex..\n"; foreach ($row as $column) { if (null === $column) { continue; } echo "$column , $numbers\n" . var_export(strpos($numbers,$column),true); if (false === strpos($numbers,$column)) { return false; } $numbers = str_replace($col,'',$numbers); } 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)
8.3.60.0090.01216.88
8.3.50.0110.00918.28
8.3.40.0090.00618.96
8.3.30.0090.00618.84
8.3.20.0090.00018.73
8.3.10.0040.01220.69
8.3.00.0030.00617.63
8.2.180.0130.00616.63
8.2.170.0040.01122.96
8.2.160.0060.00922.25
8.2.150.0050.00324.18
8.2.140.0080.00024.66
8.2.130.0040.00426.16
8.2.120.0000.00819.89
8.2.110.0130.01021.02
8.2.100.0040.00717.97
8.2.90.0100.00020.95
8.2.80.0050.00317.92
8.2.70.0030.00617.75
8.2.60.0030.00618.04
8.2.50.0060.00318.07
8.2.40.0050.00318.28
8.2.30.0000.00718.11
8.2.20.0030.00517.77
8.2.10.0030.00517.77
8.2.00.0040.00417.97
8.1.280.0150.00625.92
8.1.270.0050.00324.66
8.1.260.0040.00426.35
8.1.250.0030.00628.09
8.1.240.0050.00522.54
8.1.230.0030.01020.94
8.1.220.0040.00417.74
8.1.210.0090.00018.89
8.1.200.0030.00717.35
8.1.190.0040.00417.52
8.1.180.0000.00818.10
8.1.170.0080.00018.92
8.1.160.0050.00218.86
8.1.150.0030.00618.64
8.1.140.0080.00417.57
8.1.130.0030.00317.80
8.1.120.0050.00217.53
8.1.110.0060.00317.51
8.1.100.0060.00317.47
8.1.90.0040.00417.50
8.1.80.0040.00417.57
8.1.70.0070.00017.48
8.1.60.0000.00817.65
8.1.50.0000.00717.47
8.1.40.0000.00817.53
8.1.30.0050.00317.65
8.1.20.0040.00417.53
8.1.10.0080.00017.62
8.1.00.0000.00817.54
8.0.300.0000.00820.02
8.0.290.0040.00416.75
8.0.280.0030.00418.54
8.0.270.0040.00417.30
8.0.260.0070.00016.84
8.0.250.0040.00417.07
8.0.240.0030.00617.04
8.0.230.0000.00917.07
8.0.220.0050.00217.02
8.0.210.0000.00817.00
8.0.200.0040.00417.08
8.0.190.0040.00417.07
8.0.180.0040.00417.07
8.0.170.0040.00416.90
8.0.160.0000.00716.93
8.0.150.0090.00017.03
8.0.140.0040.00716.93
8.0.130.0060.00013.42
8.0.120.0040.00416.85
8.0.110.0060.00316.88
8.0.100.0070.00016.84
8.0.90.0060.00316.98
8.0.80.0070.01016.99
8.0.70.0040.00416.86
8.0.60.0070.00016.86
8.0.50.0040.00417.03
8.0.30.0130.00717.23
8.0.20.0140.00717.37
8.0.10.0000.00817.17
8.0.00.0130.00716.97
7.4.330.0000.00512.96
7.4.320.0000.00716.55
7.4.300.0030.00316.60
7.4.290.0030.00316.56
7.4.280.0050.00316.41
7.4.270.0030.00316.57
7.4.260.0030.00313.34
7.4.250.0060.00316.66
7.4.240.0030.00316.64
7.4.230.0050.00216.50
7.4.220.0060.01216.64
7.4.210.0100.00816.55
7.4.200.0080.00016.63
7.4.190.0070.00016.68
7.4.160.0160.00016.66
7.4.150.0120.00816.68
7.4.140.0110.00716.59
7.4.130.0150.00816.57
7.4.120.0100.00916.56
7.4.110.0110.01016.62
7.4.100.0120.00816.45
7.4.90.0070.01516.75
7.4.80.0080.01416.57
7.4.70.0070.01416.52
7.4.60.0100.00716.49
7.4.50.0070.00016.52
7.4.40.0130.00316.43
7.4.30.0060.01016.59
7.4.10.0080.01214.94
7.4.00.0070.01015.05
7.3.330.0060.00013.34
7.3.320.0000.00813.58
7.3.310.0000.00716.45
7.3.300.0000.00716.33
7.3.290.0090.00616.47
7.3.280.0130.00716.45
7.3.270.0190.00016.39
7.3.260.0110.00616.63
7.3.250.0120.00716.49
7.3.240.0100.01016.68
7.3.230.0130.00316.45
7.3.210.0030.01516.63
7.3.200.0140.00819.39
7.3.190.0080.01616.45
7.3.180.0120.00416.43
7.3.170.0120.00616.54
7.3.160.0100.01316.61
7.3.130.0040.01414.97
7.3.120.0050.01114.97
7.3.110.0090.00814.98
7.3.100.0040.01114.98
7.3.90.0070.00715.03
7.3.80.0080.00715.08
7.3.70.0020.01114.83
7.3.60.0030.00914.78
7.3.50.0060.00814.84
7.3.40.0080.00614.96
7.3.30.0060.00814.79
7.3.20.0080.00616.63
7.3.10.0040.00816.52
7.3.00.0060.00716.67
7.2.330.0100.01016.56
7.2.320.0070.01316.70
7.2.310.0140.00316.80
7.2.300.0040.01316.86
7.2.290.0130.00316.82
7.2.260.0030.01415.01
7.2.250.0070.01215.15
7.2.240.0070.01015.13
7.2.230.0100.00615.14
7.2.220.0050.00915.24
7.2.210.0030.01215.20
7.2.200.0030.00915.18
7.2.190.0040.01115.16
7.2.180.0100.00615.04
7.2.170.0050.01315.27
7.2.160.0050.00715.06
7.2.150.0050.01017.02
7.2.140.0100.00317.10
7.2.130.0040.01116.89
7.2.120.0050.01016.96
7.2.110.0070.01016.99
7.2.100.0030.00917.07
7.2.90.0080.00316.99
7.2.80.0050.01017.00
7.2.70.0080.00917.02
7.2.60.0080.00517.08
7.2.50.0040.00817.08
7.2.40.0040.01116.92
7.2.30.0030.00916.98
7.2.20.0040.00716.96
7.2.10.0030.01117.04
7.2.00.0060.00516.95
7.1.330.0060.00915.88
7.1.320.0020.00715.81
7.1.310.0050.00915.80
7.1.300.0080.00415.74
7.1.290.0030.00715.79
7.1.280.0050.00715.61
7.1.270.0070.00615.75
7.1.260.0050.00715.89
7.1.250.0090.00716.01
7.1.240.0020.01015.86
7.1.230.0070.00715.67
7.1.220.0110.00215.71
7.1.210.0070.00815.75
7.1.200.0070.00515.92
7.1.190.0030.00715.84
7.1.180.0030.00715.88
7.1.170.0050.00715.81
7.1.160.0070.00715.77
7.1.150.0050.01015.89
7.1.140.0080.00415.74
7.1.130.0060.00515.97
7.1.120.0090.00515.73
7.1.110.0050.01015.88
7.1.100.0080.00716.52
7.1.90.0060.00815.92
7.1.80.0070.00515.84
7.1.70.0030.00916.19
7.1.60.0080.00916.97
7.1.50.0070.00915.97
7.1.40.0080.00415.70
7.1.30.0080.00415.79
7.1.20.0070.00515.82
7.1.10.0070.00915.97
7.1.00.0060.02317.82
7.0.330.0080.00715.40
7.0.320.0050.00715.49
7.0.310.0040.00815.41
7.0.300.0070.00615.56
7.0.290.0030.00615.44
7.0.280.0040.01015.50
7.0.270.0040.01015.49
7.0.260.0000.01015.40
7.0.250.0100.00515.61
7.0.240.0050.00715.47
7.0.230.0030.01015.41
7.0.220.0050.01015.51
7.0.210.0050.00915.51
7.0.200.0360.00815.17
7.0.190.0050.00715.41
7.0.180.0040.00615.25
7.0.170.0040.00915.48
7.0.160.0070.00515.52
7.0.150.0050.00615.47
7.0.140.0070.02817.69
7.0.130.0060.00615.16
7.0.120.0030.02817.70
7.0.110.0050.01015.41
7.0.100.0050.00715.46
7.0.90.0070.00615.43
7.0.80.0070.00515.64
7.0.70.0020.00715.64
7.0.60.0080.03216.95
7.0.50.0070.01616.17
7.0.40.0050.02315.79
7.0.30.0140.03015.92
7.0.20.0100.03315.72
7.0.10.0130.03115.90
7.0.00.0100.03415.88
5.6.400.0080.00514.68
5.6.390.0110.00314.52
5.6.380.0060.00514.69
5.6.370.0040.00814.78
5.6.360.0030.00914.66
5.6.350.0020.01014.58
5.6.340.0070.00714.62
5.6.330.0040.00914.54
5.6.320.0030.01014.81
5.6.310.0030.00814.21
5.6.300.0040.00714.44
5.6.290.0060.00914.63
5.6.280.0040.03016.74
5.6.270.0030.01314.65
5.6.260.0050.01014.62
5.6.250.0010.00814.57
5.6.240.0040.00914.64
5.6.230.0070.00714.43
5.6.220.0070.00914.82
5.6.210.0050.03316.59
5.6.200.0080.03115.86
5.6.190.0060.03116.49
5.6.180.0130.02216.57
5.6.170.0110.03116.53
5.6.160.0040.03316.54
5.6.150.0050.02315.67
5.6.140.0090.01515.73
5.6.130.0070.01815.83
5.6.120.0070.03216.61
5.6.110.0070.03216.64
5.6.100.0070.01816.71
5.6.90.0110.03216.96
5.6.80.0070.03016.42
5.6.70.1440.02016.54
5.6.60.0050.01014.42
5.6.50.0070.00714.55
5.6.40.0020.01114.18
5.6.30.0070.00714.56
5.6.20.0070.00914.39
5.6.10.0080.00814.52
5.6.00.0060.00514.52
5.5.380.0050.00914.56
5.5.370.0030.01114.49
5.5.360.0050.01014.76
5.5.350.0120.03216.60
5.5.340.0060.02915.73
5.5.330.0090.03216.46
5.5.320.0150.02816.50
5.5.310.0150.02416.64
5.5.300.0060.02915.73
5.5.290.0050.02115.63
5.5.280.0070.03516.76
5.5.270.0060.03416.64
5.5.260.0080.02016.61
5.5.250.0090.03016.48
5.5.240.0070.03416.39
5.5.230.0110.00514.59
5.5.220.0040.01314.42
5.5.210.0020.01014.33
5.5.200.0080.00814.60
5.5.190.0050.00814.37
5.5.180.0050.00714.14
5.5.170.0020.01014.37
5.5.160.0070.00514.31
5.5.150.0060.01014.29
5.5.140.0040.00614.35
5.5.130.0070.00714.52
5.5.120.0060.00714.46
5.5.110.0050.00614.45
5.5.100.0050.00714.44
5.5.90.0060.00814.53
5.5.80.0060.00914.38
5.5.70.0090.00514.28
5.5.60.0030.00814.23
5.5.50.0050.01014.49
5.5.40.0060.00614.59
5.5.30.0070.00514.27
5.5.20.0080.00814.43
5.5.10.0070.00514.30
5.5.00.0050.00914.32
5.4.450.0040.02315.22
5.4.440.0050.01915.22
5.4.430.0080.01415.21
5.4.420.0090.02815.17
5.4.410.0020.03315.06
5.4.400.0060.01815.06
5.4.390.0030.02615.10
5.4.380.0040.02715.11
5.4.370.0060.01815.09
5.4.360.0050.02715.11
5.4.350.0080.01915.14
5.4.340.0040.02115.01
5.4.330.0050.00613.09
5.4.320.0080.01715.11
5.4.310.0010.02615.05
5.4.300.0070.02615.01
5.4.290.0030.02615.11
5.4.280.0020.03115.14
5.4.270.0060.03015.11
5.4.260.0030.03215.11
5.4.250.0060.02415.11
5.4.240.0080.02515.11
5.4.230.0050.02915.13
5.4.220.0060.02015.14
5.4.210.0070.01715.01
5.4.200.0080.02715.07
5.4.190.0060.01515.13
5.4.180.0060.02615.08
5.4.170.0030.03215.01
5.4.160.0040.02115.02
5.4.150.0070.03115.01
5.4.140.0040.02814.18
5.4.130.0030.03114.18
5.4.120.0100.01214.18
5.4.110.0040.03014.17
5.4.100.0100.01514.21
5.4.90.0080.02614.22
5.4.80.0090.02514.19
5.4.70.0070.02614.23
5.4.60.0050.02714.17
5.4.50.0040.03014.21
5.4.40.0100.01714.20
5.4.30.0010.02214.23
5.4.20.0070.01814.20
5.4.10.0070.02014.20
5.4.00.0070.02513.98
5.3.290.0070.02913.63
5.3.280.0030.03013.58
5.3.270.0030.01813.61
5.3.260.0060.02413.66
5.3.250.0050.02913.58
5.3.240.0030.03113.63
5.3.230.0050.02413.57
5.3.220.0070.02713.65
5.3.210.0070.02713.57
5.3.200.0020.02213.60
5.3.190.0060.02813.56
5.3.180.0040.02813.61
5.3.170.0030.02513.64
5.3.160.0050.02713.61
5.3.150.0040.02513.61
5.3.140.0070.01413.61
5.3.130.0040.02213.55
5.3.120.0090.01613.61
5.3.110.0030.02313.64
5.3.100.0040.02713.39
5.3.90.0030.02313.43
5.3.80.0080.02413.41
5.3.70.0050.02813.44
5.3.60.0040.02513.42
5.3.50.0050.01713.41
5.3.40.0050.02913.41
5.3.30.0070.02713.38
5.3.20.0040.01913.32
5.3.10.0010.01813.32
5.3.00.0020.01513.29
5.2.170.0000.06311.25
5.2.160.0000.05711.25
5.2.150.0130.05711.27
5.2.140.0030.03711.24
5.2.130.0000.03311.22
5.2.120.0030.03311.20
5.2.110.0030.03311.18
5.2.100.0030.03011.32
5.2.90.0000.03011.16
5.2.80.0030.02711.14
5.2.70.0000.03311.14
5.2.60.0070.02311.16
5.2.50.0070.02311.11
5.2.40.0030.03010.93
5.2.30.0000.03011.08
5.2.20.0000.03011.02
5.2.10.0070.02311.07
5.2.00.0000.03010.83
5.1.60.0030.02010.20
5.1.50.0000.02710.03
5.1.40.0000.02310.04
5.1.30.0030.02710.28
5.1.20.0070.02010.43
5.1.10.0000.02710.29
5.1.00.0000.02710.16
5.0.50.0030.0208.54
5.0.40.0000.0208.47
5.0.30.0030.0308.26
5.0.20.0030.0178.42
5.0.10.0000.0208.31
5.0.00.0000.0308.26
4.4.90.0030.0138.21
4.4.80.0070.0108.21
4.4.70.0000.0178.21
4.4.60.0030.0138.21
4.4.50.0000.0178.21
4.4.40.0000.0238.21
4.4.30.0070.0108.21
4.4.20.0030.0138.21
4.4.10.0000.0178.21
4.4.00.0000.0278.21
4.3.110.0000.0138.21
4.3.100.0000.0178.21
4.3.90.0000.0138.21
4.3.80.0030.0208.21
4.3.70.0000.0138.21
4.3.60.0000.0178.21
4.3.50.0000.0178.21
4.3.40.0000.0238.21
4.3.30.0000.0138.21
4.3.20.0000.0178.21
4.3.10.0000.0178.21
4.3.00.0000.0138.21

preferences:
50.34 ms | 400 KiB | 5 Q