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 , $numbers\n" . var_export(strpos($column,$numbers),true); if (false === strpos($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)
8.3.60.0200.00318.56
8.3.50.0130.00321.14
8.3.40.0120.00318.61
8.3.30.0110.00418.86
8.3.20.0050.00318.77
8.3.10.0060.00320.53
8.3.00.0100.00019.38
8.2.180.0110.00716.75
8.2.170.0080.00822.96
8.2.160.0080.00822.31
8.2.150.0080.00024.18
8.2.140.0000.00824.66
8.2.130.0050.00326.16
8.2.120.0040.00419.95
8.2.110.0000.01120.99
8.2.100.0110.00017.91
8.2.90.0080.00019.16
8.2.80.0030.00518.02
8.2.70.0030.00617.50
8.2.60.0040.00418.05
8.2.50.0000.00918.07
8.2.40.0040.00418.22
8.2.30.0040.00419.97
8.2.20.0030.00617.82
8.2.10.0000.00817.81
8.2.00.0040.00417.66
8.1.280.0140.00725.92
8.1.270.0030.00523.99
8.1.260.0040.00426.35
8.1.250.0000.00828.09
8.1.240.0090.00022.60
8.1.230.0100.00020.96
8.1.220.0040.00418.77
8.1.210.0040.00418.88
8.1.200.0030.00817.47
8.1.190.0090.00017.54
8.1.180.0000.00818.10
8.1.170.0040.00418.74
8.1.160.0070.00018.85
8.1.150.0000.00818.63
8.1.140.0040.00417.54
8.1.130.0000.00817.73
8.1.120.0000.00717.55
8.1.110.0000.00817.39
8.1.100.0050.00317.55
8.1.90.0090.00017.41
8.1.80.0050.00217.51
8.1.70.0030.00317.42
8.1.60.0070.00017.49
8.1.50.0060.00317.41
8.1.40.0040.00417.45
8.1.30.0090.00017.64
8.1.20.0000.00817.53
8.1.10.0000.00817.58
8.1.00.0000.00917.57
8.0.300.0000.00820.10
8.0.290.0000.00916.75
8.0.280.0000.00718.49
8.0.270.0070.00017.18
8.0.260.0030.00316.75
8.0.250.0000.00716.89
8.0.240.0040.00416.98
8.0.230.0030.00316.96
8.0.220.0030.00316.96
8.0.210.0030.00616.86
8.0.200.0000.00716.98
8.0.190.0090.00016.96
8.0.180.0040.00416.89
8.0.170.0060.00316.91
8.0.160.0040.00416.85
8.0.150.0030.00616.93
8.0.140.0100.00016.84
8.0.130.0030.00313.32
8.0.120.0060.00316.89
8.0.110.0000.00716.96
8.0.100.0000.00716.77
8.0.90.0020.00516.93
8.0.80.0070.01417.00
8.0.70.0040.00416.81
8.0.60.0070.00016.80
8.0.50.0040.00416.96
8.0.30.0150.00717.20
8.0.20.0110.01017.40
8.0.10.0030.00517.01
8.0.00.0100.01016.77
7.4.330.0050.00014.65
7.4.320.0000.00616.59
7.4.300.0060.00016.59
7.4.290.0000.00716.60
7.4.280.0040.00416.54
7.4.270.0000.00816.66
7.4.260.0000.00613.30
7.4.250.0030.00716.63
7.4.240.0050.00316.55
7.4.230.0030.00316.64
7.4.220.0110.00816.51
7.4.210.0090.00616.63
7.4.200.0000.00716.41
7.4.190.0000.00716.73
7.4.160.0110.00616.45
7.4.150.0120.00617.40
7.4.140.0100.01117.86
7.4.130.0080.01016.48
7.4.120.0090.01016.53
7.4.110.0100.01016.47
7.4.100.0100.01316.48
7.4.90.0060.01216.71
7.4.80.0090.00919.04
7.4.70.0060.01616.57
7.4.60.0140.00316.68
7.4.50.0040.00416.58
7.4.40.0100.00622.27
7.4.30.0030.01916.52
7.4.00.0030.01014.93
7.3.330.0060.00013.44
7.3.320.0030.00313.37
7.3.310.0070.00016.47
7.3.300.0000.00716.40
7.3.290.0000.01416.42
7.3.280.0070.01116.42
7.3.270.0130.00617.40
7.3.260.0140.01318.24
7.3.250.0130.01016.52
7.3.240.0090.01616.66
7.3.230.0060.01216.58
7.3.210.0060.01216.55
7.3.200.0070.01119.39
7.3.190.0100.01316.57
7.3.180.0080.00716.32
7.3.170.0030.01716.47
7.3.160.0090.01216.48
7.3.120.0070.01214.74
7.3.110.0050.01214.82
7.3.100.0070.00914.75
7.3.90.0070.00814.92
7.3.80.0090.00814.86
7.3.70.0030.01114.84
7.3.60.0050.00714.88
7.3.50.0040.00814.86
7.3.40.0090.00714.84
7.3.30.0030.00714.91
7.3.20.0060.00716.57
7.3.10.0060.00816.37
7.3.00.0070.00716.66
7.2.330.0140.00716.61
7.2.320.0100.01316.80
7.2.310.0080.01916.86
7.2.300.0140.00416.77
7.2.290.0120.00616.74
7.2.240.0070.01015.10
7.2.230.0070.01014.97
7.2.220.0050.01215.03
7.2.210.0080.00914.94
7.2.200.0040.01514.96
7.2.190.0030.00815.09
7.2.180.0050.00914.87
7.2.170.0020.01215.07
7.2.160.0070.00615.11
7.2.150.0070.01016.80
7.2.140.0060.01116.87
7.2.130.0060.00516.92
7.2.120.0090.00516.98
7.2.110.0000.01016.96
7.2.100.0030.01116.92
7.2.90.0070.01016.78
7.2.80.0060.01017.03
7.2.70.0070.01017.09
7.2.60.0100.00416.96
7.2.50.0100.00317.02
7.2.40.0090.00616.90
7.2.30.0070.00916.88
7.2.20.0030.01216.82
7.2.10.0070.00916.97
7.2.00.0060.00616.88
7.1.330.0050.01315.67
7.1.320.0070.00615.78
7.1.310.0060.00615.67
7.1.300.0050.00515.73
7.1.290.0080.00515.66
7.1.280.0000.01515.83
7.1.270.0060.00715.83
7.1.260.0030.00915.75
7.1.250.0060.00915.78
7.1.200.0110.00415.79
7.1.70.0030.00517.19
7.1.60.0070.01019.40
7.1.50.0060.01616.92
7.1.00.0030.06722.36
7.0.200.0000.00916.70
7.0.140.0100.06722.09
7.0.60.0130.08020.07
7.0.50.0130.05717.92
7.0.40.0030.07017.76
7.0.30.0100.03717.73
7.0.20.0130.07717.69
7.0.10.0070.05017.73
7.0.00.0030.04317.68
5.6.280.0070.07321.11
5.6.210.0030.06320.56
5.6.200.0070.08018.21
5.6.190.0070.06018.27
5.6.180.0130.03718.20
5.6.170.0030.04318.15
5.6.160.0070.04718.24
5.6.150.0100.07718.29
5.6.140.0030.09018.28
5.6.130.0100.05018.20
5.6.120.0070.08718.15
5.6.110.0100.04718.21
5.6.100.0100.08018.18
5.6.90.0070.04718.14
5.6.80.0000.04017.67
5.6.70.0030.03717.60
5.6.60.0070.06717.50
5.6.50.0000.04317.57
5.6.40.0100.03017.54
5.6.30.0000.04017.53
5.6.20.0030.05017.54
5.6.10.0070.03317.63
5.6.00.0030.03717.49
5.5.350.0000.09020.54
5.5.340.0030.08317.96
5.5.330.0130.07318.07
5.5.320.0070.08018.00
5.5.310.0130.05717.98
5.5.300.0030.06317.98
5.5.290.0070.04017.99
5.5.280.0100.08017.97
5.5.270.0130.04317.99
5.5.260.0100.07718.06
5.5.250.0030.04017.78
5.5.240.0000.04017.43
5.5.230.0000.04317.37
5.5.220.0000.04017.37
5.5.210.0000.04017.38
5.5.200.0000.04017.42
5.5.190.0030.04017.41
5.5.180.0070.03717.45
5.5.160.0030.03717.31
5.5.150.0070.03717.43
5.5.140.0000.04017.33
5.5.130.0030.04317.43
5.5.120.0100.03717.39
5.5.110.0000.04317.30
5.5.100.0030.03717.33
5.5.90.0030.03717.34
5.5.80.0030.04317.25
5.5.70.0030.04317.20
5.5.60.0000.05717.21
5.5.50.0070.03317.26
5.5.40.0070.03317.23
5.5.30.0100.05017.20
5.5.20.0030.04317.21
5.5.10.0070.03317.21
5.5.00.0070.04317.28
5.4.450.0030.05019.46
5.4.440.0070.08019.39
5.4.430.0070.08019.46
5.4.420.0030.07719.41
5.4.410.0130.03319.33
5.4.400.0070.03319.13
5.4.390.0030.03719.03
5.4.380.0000.04719.05
5.4.370.0000.04319.27
5.4.360.0030.04018.88
5.4.350.0030.03719.27
5.4.340.0030.03719.12
5.4.320.0000.04019.11
5.4.310.0030.03719.02
5.4.300.0030.04718.98
5.4.290.0070.03319.15
5.4.280.0000.04018.98
5.4.270.0030.04019.05
5.4.260.0000.04018.95
5.4.250.0070.03719.15
5.4.240.0070.03318.99
5.4.230.0130.02719.09
5.4.220.0100.03019.04
5.4.210.0000.04019.04
5.4.200.0070.03319.02
5.4.190.0030.03718.88
5.4.180.0070.06719.10
5.4.170.0030.04719.14
5.4.160.0100.06719.08
5.4.150.0070.07718.99
5.4.140.0100.07716.48
5.4.130.0030.04716.34
5.4.120.0070.03716.30
5.4.110.0030.07016.29
5.4.100.0030.07316.53
5.4.90.0100.05016.51
5.4.80.0100.03016.35
5.4.70.0100.05716.44
5.4.60.0070.04716.44
5.4.50.0030.07716.47
5.4.40.0070.07716.50
5.4.30.0000.05716.61
5.4.20.0130.06716.25
5.4.10.0070.07716.61
5.4.00.0070.07315.89
5.3.290.0100.03014.74
5.3.280.0070.03314.63
5.3.270.0130.07014.71
5.3.260.0030.08314.72
5.3.250.0130.04714.64
5.3.240.0100.04314.66
5.3.230.0000.04314.60
5.3.220.0170.06714.68
5.3.210.0030.05314.63
5.3.200.0070.07714.64
5.3.190.0030.04014.67
5.3.180.0100.06014.65
5.3.170.0030.08014.61
5.3.160.0070.07714.62
5.3.150.0070.07714.57
5.3.140.0070.07314.64
5.3.130.0070.08014.60
5.3.120.0030.07014.44
5.3.110.0070.05014.62
5.3.100.0030.05014.13
5.3.90.0070.04014.05
5.3.80.0030.07714.16
5.3.70.0070.06314.09
5.3.60.0070.03714.05
5.3.50.0030.05014.04
5.3.40.0030.07714.20
5.3.30.0030.07014.00
5.3.20.0170.06713.74
5.3.10.0030.08013.73
5.3.00.0030.08013.68
5.2.170.0000.06711.26
5.2.160.0030.06311.25
5.2.150.0100.03711.09
5.2.140.0100.06011.18
5.2.130.0130.05311.19
5.2.120.0070.03311.15
5.2.110.0000.05311.19
5.2.100.0070.05711.36
5.2.90.0030.06711.36
5.2.80.0130.05311.19
5.2.70.0070.06011.13
5.2.60.0100.06011.31
5.2.50.0030.05011.10
5.2.40.0000.03011.09
5.2.30.0030.04011.12
5.2.20.0100.03711.05
5.2.10.0000.06710.96
5.2.00.0070.05010.76
5.1.60.0070.04710.05
5.1.50.0030.05010.03
5.1.40.0000.0409.87
5.1.30.0030.03310.40
5.1.20.0070.05710.46
5.1.10.0030.04010.07
5.1.00.0030.06010.20
5.0.50.0030.0378.66
5.0.40.0070.0278.52
5.0.30.0030.0638.39
5.0.20.0030.0308.27
5.0.10.0030.0208.22
5.0.00.0000.0338.24
4.4.90.0030.0238.22
4.4.80.0000.0338.22
4.4.70.0000.0408.22
4.4.60.0000.0338.22
4.4.50.0030.0338.22
4.4.40.0070.0508.22
4.4.30.0000.0378.22
4.4.20.0000.0378.22
4.4.10.0100.0238.22
4.4.00.0000.0338.22
4.3.110.0070.0338.22
4.3.100.0030.0338.22
4.3.90.0000.0238.22
4.3.80.0000.0538.22
4.3.70.0030.0278.22
4.3.60.0000.0378.22
4.3.50.0030.0278.22
4.3.40.0070.0438.22
4.3.30.0070.0238.22
4.3.20.0000.0308.22
4.3.10.0000.0238.22
4.3.00.0030.0338.22

preferences:
39.03 ms | 401 KiB | 5 Q