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) { $this->checkRow($rowIndex); } } protected function checkRow ($rowIndex, $row) { $numbers = self::NUMBERS; echo "checking $rowIndex..\n"; foreach ($row as $column) { if (false === strpos($column,$numbers)) { 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)
8.3.60.0070.01317.00
8.3.50.0090.01317.45
8.3.40.0150.00018.82
8.3.30.0100.01018.89
8.3.20.0130.00618.73
8.3.10.0080.00020.66
8.3.00.0060.00319.38
8.2.180.0150.00016.75
8.2.170.0040.01122.96
8.2.160.0070.01021.24
8.2.150.0040.00424.18
8.2.140.0040.00424.66
8.2.130.0000.00826.16
8.2.120.0040.00421.01
8.2.110.0060.00621.12
8.2.100.0090.00318.03
8.2.90.0000.00819.34
8.2.80.0050.00519.27
8.2.70.0070.00317.75
8.2.60.0040.00418.05
8.2.50.0060.00318.07
8.2.40.0040.00418.16
8.2.30.0080.00018.15
8.2.20.0040.00417.81
8.2.10.0080.00017.79
8.2.00.0030.00817.91
8.1.280.0120.00625.92
8.1.270.0080.00024.66
8.1.260.0040.00426.35
8.1.250.0050.00328.09
8.1.240.0090.00022.59
8.1.230.0070.00420.89
8.1.220.0080.00017.77
8.1.210.0060.00318.97
8.1.200.0000.01017.36
8.1.190.0080.00017.52
8.1.180.0000.00818.10
8.1.170.0030.00618.75
8.1.160.0000.00718.91
8.1.150.0050.00318.73
8.1.140.0050.00317.48
8.1.130.0020.00517.77
8.1.120.0070.00017.48
8.1.110.0040.00417.38
8.1.100.0070.00017.45
8.1.90.0000.00817.48
8.1.80.0000.00717.47
8.1.70.0000.00717.46
8.1.60.0030.00617.49
8.1.50.0030.00517.43
8.1.40.0000.00817.43
8.1.30.0040.00417.64
8.1.20.0050.00317.57
8.1.10.0050.00317.58
8.1.00.0060.00317.51
8.0.300.0040.00419.99
8.0.290.0000.00716.88
8.0.280.0000.00718.39
8.0.270.0030.00317.18
8.0.260.0030.00316.89
8.0.250.0040.00416.95
8.0.240.0000.00716.91
8.0.230.0040.00416.92
8.0.220.0070.00016.91
8.0.210.0050.00317.00
8.0.200.0030.00316.93
8.0.190.0040.00417.09
8.0.180.0000.00716.98
8.0.170.0040.00416.98
8.0.160.0000.00716.93
8.0.150.0060.00316.88
8.0.140.0040.00416.83
8.0.130.0000.00713.38
8.0.120.0030.00616.91
8.0.110.0000.00816.83
8.0.100.0000.00716.93
8.0.90.0000.00717.04
8.0.80.0060.00917.00
8.0.70.0000.00717.09
8.0.60.0040.00416.93
8.0.50.0030.00516.84
8.0.30.0110.00917.19
8.0.20.0100.01117.12
8.0.10.0000.00716.87
8.0.00.0110.01216.90
7.4.330.0000.00513.03
7.4.320.0060.00016.55
7.4.300.0030.00316.57
7.4.290.0070.00016.46
7.4.280.0000.00816.62
7.4.270.0040.00416.63
7.4.260.0050.00013.32
7.4.250.0030.00516.62
7.4.240.0000.00716.45
7.4.230.0030.00316.52
7.4.220.0120.01016.58
7.4.210.0060.00816.67
7.4.200.0070.00016.41
7.4.190.0000.00816.34
7.4.160.0110.00816.82
7.4.150.0050.01416.50
7.4.140.0130.01016.64
7.4.130.0130.00616.54
7.4.120.0120.01016.62
7.4.110.0060.01516.57
7.4.100.0070.01316.44
7.4.90.0110.01116.48
7.4.80.0040.01519.39
7.4.70.0060.01116.46
7.4.60.0040.01316.42
7.4.50.0120.00216.31
7.4.40.0090.00916.50
7.4.30.0060.01016.71
7.4.00.0070.01014.91
7.3.330.0000.00613.29
7.3.320.0030.00313.33
7.3.310.0000.00716.29
7.3.300.0070.00016.44
7.3.290.0000.01516.45
7.3.280.0060.01016.47
7.3.270.0090.00916.51
7.3.260.0180.00616.40
7.3.250.0100.01016.44
7.3.240.0130.00516.44
7.3.230.0030.01316.52
7.3.210.0080.01116.34
7.3.200.0070.01016.52
7.3.190.0110.00716.44
7.3.180.0060.00916.56
7.3.170.0060.00916.44
7.3.160.0040.01616.53
7.3.120.0090.00616.00
7.3.110.0070.00616.07
7.3.100.0070.00616.08
7.3.90.0060.00815.91
7.3.80.0070.00715.88
7.3.70.0030.01015.90
7.3.60.0070.00715.87
7.3.50.0050.01115.97
7.3.40.0050.00915.91
7.3.30.0080.00816.04
7.3.20.0090.00516.94
7.3.10.0030.00916.87
7.3.00.0120.00316.71
7.2.330.0110.00716.87
7.2.320.0000.02016.78
7.2.310.0120.01516.49
7.2.300.0110.00716.85
7.2.290.0100.00716.82
7.2.240.0060.00716.13
7.2.230.0070.01016.17
7.2.220.0050.00716.20
7.2.210.0050.01016.06
7.2.200.0050.00816.15
7.2.190.0050.01116.12
7.2.180.0070.01016.13
7.2.170.0070.00816.16
7.2.160.0040.00916.12
7.2.150.0080.00616.91
7.2.140.0040.00817.06
7.2.130.0030.01117.00
7.2.120.0070.00716.94
7.2.110.0050.01017.00
7.2.100.0060.01016.99
7.2.90.0090.00717.05
7.2.80.0060.01017.02
7.2.70.0040.01016.93
7.2.60.0030.00916.97
7.2.50.0070.01017.05
7.2.40.0050.00917.05
7.2.30.0010.01316.93
7.2.20.0040.01017.07
7.2.10.0060.01216.85
7.2.00.0080.00717.02
7.1.330.0070.00516.45
7.1.320.0060.00816.42
7.1.310.0080.00516.46
7.1.300.0030.01016.56
7.1.290.0050.00716.47
7.1.280.0050.00916.44
7.1.270.0060.00816.43
7.1.260.0070.00816.48
7.1.250.0050.00916.27
7.1.240.0060.00915.91
7.1.230.0060.00315.63
7.1.220.0110.00415.71
7.1.210.0080.00415.78
7.1.200.0050.00515.62
7.1.190.0030.00915.80
7.1.180.0040.00415.74
7.1.170.0030.00915.94
7.1.160.0080.00415.96
7.1.150.0000.01115.63
7.1.140.0070.00715.94
7.1.130.0130.00315.71
7.1.120.0070.01015.96
7.1.110.0110.00415.70
7.1.100.0060.00616.96
7.1.90.0080.00815.86
7.1.80.0030.01015.88
7.1.70.0040.00516.61
7.1.60.0060.01317.61
7.1.50.0050.00816.55
7.1.40.0050.00515.65
7.1.30.0090.00015.63
7.1.20.0070.00715.66
7.1.10.0070.00415.54
7.1.00.0030.02819.07
7.0.330.0150.00015.36
7.0.320.0040.00815.27
7.0.310.0000.01615.62
7.0.300.0000.00915.57
7.0.290.0120.00315.01
7.0.280.0030.00815.37
7.0.270.0070.00715.14
7.0.260.0040.01115.46
7.0.250.0080.00315.38
7.0.240.0070.00715.38
7.0.230.0030.01015.29
7.0.220.0000.01315.37
7.0.210.0040.00715.55
7.0.200.0060.00416.23
7.0.190.0090.00315.45
7.0.180.0060.00615.55
7.0.170.0000.01415.13
7.0.160.0070.00415.42
7.0.150.0050.00515.25
7.0.140.0040.03718.64
7.0.130.0070.00715.37
7.0.120.0050.03718.75
7.0.110.0030.00915.38
7.0.100.0040.00815.06
7.0.90.0070.00715.33
7.0.80.0000.00915.18
7.0.70.0060.00915.52
7.0.60.0110.02217.61
7.0.50.0020.04816.55
7.0.40.0050.02816.95
7.0.30.0150.03016.67
7.0.20.0190.04416.72
7.0.10.0180.03716.71
7.0.00.0070.03816.74
5.6.380.0030.01314.80
5.6.370.0110.00014.76
5.6.360.0100.00314.33
5.6.350.0030.00614.59
5.6.340.0030.01014.37
5.6.330.0080.00814.44
5.6.320.0000.00914.67
5.6.310.0080.00414.51
5.6.300.0080.00614.26
5.6.290.0120.00014.44
5.6.280.0050.03817.74
5.6.270.0030.00714.21
5.6.260.0050.00514.56
5.6.250.0070.00714.79
5.6.240.0070.00314.52
5.6.230.0000.01114.33
5.6.220.0060.00614.59
5.6.210.0150.03717.77
5.6.200.0050.02516.27
5.6.190.0050.03617.49
5.6.180.0200.03717.60
5.6.170.0240.03717.46
5.6.160.0080.03717.61
5.6.150.0050.05016.19
5.6.140.0110.02316.29
5.6.130.0050.02616.48
5.6.120.0090.02017.71
5.6.110.0100.04017.55
5.6.100.0020.05117.83
5.6.90.0140.03917.79
5.6.80.0060.03117.36
5.6.70.0060.00914.45
5.6.60.0040.01114.37
5.6.50.0040.01414.52
5.6.40.0100.00414.36
5.6.30.0070.00714.38
5.6.20.0080.00614.61
5.6.10.0080.00414.26
5.6.00.0030.01314.50
5.5.380.0030.00811.02
5.5.370.0070.00311.25
5.5.360.0060.00611.25
5.5.350.0080.04115.83
5.5.340.0030.02814.46
5.5.330.0040.04615.83
5.5.320.0250.03415.79
5.5.310.0170.01915.90
5.5.300.0110.04214.50
5.5.290.0080.03814.69
5.5.280.0060.04316.11
5.5.270.0100.02715.91
5.5.260.0070.02616.22
5.5.250.0090.04015.94
5.5.240.0130.03015.66
5.5.230.0000.01111.16
5.5.220.0040.00411.40
5.5.210.0000.00711.25
5.5.200.0030.00311.34
5.5.190.0000.01011.20
5.5.180.0000.01111.27
5.5.170.0060.00611.11
5.5.160.0040.01111.15
5.5.150.0060.00611.19
5.5.140.0030.01010.97
5.5.130.0110.00011.09
5.5.120.0080.00411.34
5.5.110.0030.00711.40
5.5.100.0070.00311.21
5.5.90.0030.00710.89
5.5.80.0000.01111.49
5.5.70.0040.00911.17
5.5.60.0000.00811.19
5.5.50.0000.00811.16
5.5.40.0000.00811.40
5.5.30.0000.00811.29
5.5.20.0030.01011.53
5.5.10.0030.00911.45
5.5.00.0100.00311.29
5.4.450.0030.02615.29
5.4.440.0060.02315.45
5.4.430.0070.04215.25
5.4.420.0030.03515.49
5.4.410.0070.02215.23
5.4.400.0070.02515.30
5.4.390.0000.02515.07
5.4.380.0080.04014.89
5.4.370.0100.04015.00
5.4.360.0120.02215.11
5.4.350.0020.02715.36
5.4.340.0100.03215.04
5.4.330.0030.00311.12
5.4.320.0090.04015.18
5.4.310.0020.03715.12
5.4.300.0100.02014.91
5.4.290.0080.02215.12
5.4.280.0030.03415.03
5.4.270.0090.03515.20
5.4.260.0100.02715.23
5.4.250.0030.03014.94
5.4.240.0020.02815.11
5.4.230.0080.03615.14
5.4.220.0050.04015.00
5.4.210.0070.02215.14
5.4.200.0070.02715.25
5.4.190.0040.03914.99
5.4.180.0060.04015.12
5.4.170.0150.01315.26
5.4.160.0070.03615.12
5.4.150.0110.03615.00
5.4.140.0030.04113.82
5.4.130.0020.04013.78
5.4.120.0110.03613.78
5.4.110.0050.03313.64
5.4.100.0020.02713.93
5.4.90.0070.03213.88
5.4.80.0050.03713.80
5.4.70.0050.04113.83
5.4.60.0080.03313.90
5.4.50.0020.03413.85
5.4.40.0050.03013.68
5.4.30.0050.03513.93
5.4.20.0040.03013.95
5.4.10.0030.03313.80
5.4.00.0020.04113.50
5.3.290.0040.02612.62
5.3.280.0060.03012.54
5.3.270.0000.02712.74
5.3.260.0060.03312.68
5.3.250.0070.02912.76
5.3.240.0080.02612.49
5.3.230.0080.03912.66
5.3.220.0050.02712.67
5.3.210.0050.02612.55
5.3.200.0040.02412.64
5.3.190.0050.02512.63
5.3.180.0030.03012.74
5.3.170.0030.03612.81
5.3.160.0050.02712.75
5.3.150.0060.03712.70
5.3.140.0020.04212.73
5.3.130.0080.02312.69
5.3.120.0050.04512.73
5.3.110.0030.03512.67
5.3.100.0080.03512.40
5.3.90.0100.03412.38
5.3.80.0040.04012.33
5.3.70.0070.04012.33
5.3.60.0060.03912.35
5.3.50.0080.03512.30
5.3.40.0030.02712.38
5.3.30.0020.03812.20
5.3.20.0050.03312.18
5.3.10.0050.02712.09
5.3.00.0020.02712.02
5.2.170.0030.03810.41
5.2.160.0070.03210.39
5.2.150.0100.01910.32
5.2.140.0050.03210.30
5.2.130.0010.02810.44
5.2.120.0020.03610.31
5.2.110.0110.03010.36
5.2.100.0050.03210.37
5.2.90.0060.02110.35
5.2.80.0170.01210.21
5.2.70.0070.02410.15
5.2.60.0030.01810.14
5.2.50.0080.01310.17
5.2.40.0020.03210.30
5.2.30.0030.01810.29
5.2.20.0070.03210.04
5.2.10.0060.03110.18
5.2.00.0020.0339.97
5.1.60.0070.0229.37
5.1.50.0030.0329.40
5.1.40.0050.0259.48
5.1.30.0030.0309.51
5.1.20.0020.0349.60
5.1.10.0040.0279.47
5.1.00.0050.0289.48
5.0.50.0020.0188.67
5.0.40.0030.0238.58
5.0.30.0050.0228.50
5.0.20.0000.0158.51
5.0.10.0020.0158.52
5.0.00.0050.0328.52
4.4.90.0000.0168.50
4.4.80.0010.0168.50
4.4.70.0020.0168.50
4.4.60.0050.0088.50
4.4.50.0000.0228.50
4.4.40.0030.0278.50
4.4.30.0020.0228.50
4.4.20.0030.0118.50
4.4.10.0000.0198.50
4.4.00.0000.0198.50
4.3.110.0000.0108.50
4.3.100.0030.0178.51
4.3.90.0030.0158.52
4.3.80.0050.0138.52
4.3.70.0000.0178.53
4.3.60.0000.0208.53
4.3.50.0040.0108.53
4.3.40.0000.0158.53
4.3.30.0020.0178.53
4.3.20.0030.0098.53
4.3.10.0020.0178.54
4.3.00.0010.0208.56

preferences:
47.71 ms | 401 KiB | 5 Q