3v4l.org

run code in 300+ PHP versions simultaneously
<?php class SudokuSolver { protected $sudokuColumns; public function __construct (array $sudoku) { $this->sudoku = $sudoku; } // could be static as well public function printOut ($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->sudoku; // 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 $row) { $this->checkRow($rowIndex); } } protected function checkRow ($rowIndex) { echo "checking $rowIndex..\n"; } } $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)
8.3.70.0120.00616.75
8.3.60.0130.00618.56
8.3.50.0160.00122.11
8.3.40.0100.01018.94
8.3.30.0140.00019.04
8.3.20.0070.00020.34
8.3.10.0040.00422.15
8.3.00.0080.00022.43
8.2.180.0150.00416.88
8.2.170.0140.00722.96
8.2.160.0110.00720.98
8.2.150.0040.00424.18
8.2.140.0080.00024.66
8.2.130.0110.00326.16
8.2.120.0040.00419.61
8.2.110.0060.00319.21
8.2.100.0060.00618.03
8.2.90.0060.00319.19
8.2.80.0060.00317.97
8.2.70.0060.00317.49
8.2.60.0000.00818.05
8.2.50.0080.00018.07
8.2.40.0040.00418.22
8.2.30.0040.00418.14
8.2.20.0040.00417.67
8.2.10.0040.00419.41
8.2.00.0040.00417.84
8.1.280.0090.00925.92
8.1.270.0040.00423.97
8.1.260.0000.00926.35
8.1.250.0080.00028.09
8.1.240.0060.00321.32
8.1.230.0030.00817.52
8.1.220.0040.00417.74
8.1.210.0040.00418.77
8.1.200.0030.00617.25
8.1.190.0000.00817.36
8.1.180.0040.00418.10
8.1.170.0060.00318.45
8.1.160.0050.00421.99
8.1.150.0030.00618.73
8.1.140.0000.00717.53
8.1.130.0000.00817.86
8.1.120.0050.00317.53
8.1.110.0090.00017.46
8.1.100.0000.00817.50
8.1.90.0000.00817.55
8.1.80.0020.00517.33
8.1.70.0030.00617.43
8.1.60.0040.00417.63
8.1.50.0030.00517.54
8.1.40.0080.00017.47
8.1.30.0040.00417.52
8.1.20.0000.00817.61
8.1.10.0080.00017.57
8.1.00.0080.00017.54
8.0.300.0060.00318.77
8.0.290.0060.00316.88
8.0.280.0070.00018.39
8.0.270.0030.00517.34
8.0.260.0070.00016.82
8.0.250.0070.00016.88
8.0.240.0000.00716.97
8.0.230.0030.00316.88
8.0.220.0000.00816.89
8.0.210.0080.00016.89
8.0.200.0000.00816.88
8.0.190.0050.00316.92
8.0.180.0040.00416.86
8.0.170.0080.00016.97
8.0.160.0030.00516.78
8.0.150.0000.00716.80
8.0.140.0070.00016.89
8.0.130.0030.00313.32
8.0.120.0030.00516.82
8.0.110.0000.00816.90
8.0.100.0050.00216.95
8.0.90.0000.00716.99
8.0.80.0090.01316.91
8.0.70.0070.00017.00
8.0.60.0000.00816.79
8.0.50.0080.00016.99
8.0.30.0140.00716.93
8.0.20.0140.00717.40
8.0.10.0040.00417.13
8.0.00.0070.01516.95
7.4.330.0000.00715.07
7.4.320.0000.00616.45
7.4.300.0050.00216.50
7.4.290.0070.00016.65
7.4.280.0030.00316.43
7.4.270.0030.00616.68
7.4.260.0070.00016.39
7.4.250.0000.00816.50
7.4.240.0000.00816.66
7.4.230.0000.00716.72
7.4.220.0070.02016.53
7.4.210.0070.00816.65
7.4.200.0040.00416.52
7.4.190.0070.00016.35
7.4.160.0120.00616.52
7.4.150.0060.01217.40
7.4.140.0100.01217.86
7.4.130.0080.01416.51
7.4.120.0130.00616.51
7.4.110.0060.01316.61
7.4.100.0060.01216.39
7.4.90.0090.00916.55
7.4.80.0100.01016.45
7.4.70.0100.00916.59
7.4.60.0080.01316.47
7.4.50.0030.00316.52
7.4.40.0070.00722.77
7.4.30.0080.00816.60
7.4.00.0040.01415.12
7.3.330.0030.00313.30
7.3.320.0030.00313.24
7.3.310.0000.00816.20
7.3.300.0070.00016.33
7.3.290.0140.00016.30
7.3.280.0090.00716.34
7.3.270.0100.01017.40
7.3.260.0090.01716.29
7.3.250.0100.01116.36
7.3.240.0100.00716.46
7.3.230.0090.00916.56
7.3.210.0150.00616.68
7.3.200.0140.01119.39
7.3.190.0100.00616.51
7.3.180.0190.00316.68
7.3.170.0100.00716.45
7.3.160.0110.00616.71
7.3.120.0090.00614.67
7.2.330.0090.01616.83
7.2.320.0110.01316.73
7.2.310.0150.00316.61
7.2.300.0130.00716.61
7.2.290.0150.00416.82
7.2.00.0030.00819.64
7.1.200.0030.01215.97
7.1.100.0060.01218.25
7.1.70.0030.00617.29
7.1.60.0060.01819.82
7.1.50.0000.01317.09
7.1.00.0000.08022.32
7.0.200.0040.00416.94
7.0.140.0070.06722.04
7.0.100.0270.06719.88
7.0.90.0070.03720.02
7.0.80.0330.08319.87
7.0.70.0030.08319.87
7.0.60.0100.04019.97
7.0.50.0070.05720.25
7.0.40.0030.07720.00
7.0.30.0130.09019.96
7.0.20.0170.08720.17
7.0.10.0070.05020.04
7.0.00.0070.08320.05
5.6.280.0030.07321.13
5.6.250.0070.04320.61
5.6.240.0100.08020.52
5.6.230.0100.06720.56
5.6.220.0070.08020.62
5.6.210.0070.03720.59
5.6.200.0070.07721.10
5.6.190.0030.04321.08
5.6.180.0170.03721.14
5.6.170.0030.04021.15
5.6.160.0030.05721.06
5.6.150.0130.06721.12
5.6.140.0030.08721.11
5.6.130.0070.09021.12
5.6.120.0030.06721.15
5.6.110.0100.06721.11
5.6.100.0030.04321.07
5.6.90.0070.08720.95
5.6.80.0070.06320.47
5.6.70.0100.07020.40
5.6.60.0100.07320.43
5.6.50.0030.07720.38
5.6.40.0100.06720.53
5.6.30.0130.06720.41
5.6.20.0030.05720.41
5.6.10.0070.03720.45
5.6.00.0130.08320.43
5.5.380.0100.07720.55
5.5.370.0100.06720.38
5.5.360.0070.03720.49
5.5.350.0070.07720.39
5.5.340.0030.05720.95
5.5.330.0030.04320.95
5.5.320.0170.07320.93
5.5.310.0070.07020.80
5.5.300.0030.07320.96
5.5.290.0070.03720.83
5.5.280.0070.04020.68
5.5.270.0070.06320.86
5.5.260.0030.08720.93
5.5.250.0100.07720.73
5.5.240.0030.04720.25
5.5.230.0130.07720.19
5.5.220.0130.07020.27
5.5.210.0070.06320.29
5.5.200.0100.06720.25
5.5.190.0030.03720.03
5.5.180.0030.07720.25
5.5.160.0070.04720.21
5.5.150.0070.05320.03
5.5.140.0000.07320.28
5.5.130.0100.07720.26
5.5.120.0070.07720.21
5.5.110.0000.05720.24
5.5.100.0030.06020.21
5.5.90.0000.04020.16
5.5.80.0100.05719.98
5.5.70.0100.05020.11
5.5.60.0070.06320.14
5.5.50.0070.04020.17
5.5.40.0030.03720.03
5.5.30.0070.03320.08
5.5.20.0030.04020.08
5.5.10.0000.04320.06
5.5.00.0030.03320.01
5.4.450.0130.05719.55
5.4.440.0030.04319.45
5.4.430.0030.03719.36
5.4.420.0000.04319.36
5.4.410.0030.03719.23
5.4.400.0030.08019.04
5.4.390.0030.08319.04
5.4.380.0100.05019.24
5.4.370.0130.06019.04
5.4.360.0070.07319.13
5.4.350.0000.04019.03
5.4.340.0070.03719.13
5.4.320.0100.06719.17
5.4.310.0070.07719.15
5.4.300.0030.04319.09
5.4.290.0100.04319.21
5.4.280.0030.07318.88
5.4.270.0100.07019.12
5.4.260.0100.05318.89
5.4.250.0070.03319.16
5.4.240.0070.07719.03
5.4.230.0070.05319.12
5.4.220.0070.04718.89
5.4.210.0030.03719.04
5.4.200.0000.04019.04
5.4.190.0130.03019.11
5.4.180.0100.03019.11
5.4.170.0100.02719.05
5.4.160.0000.03319.01
5.4.150.0030.05019.05
5.4.140.0070.03016.55
5.4.130.0030.05716.51
5.4.120.0070.03016.47
5.4.110.0030.03716.55
5.4.100.0100.04316.38
5.4.90.0070.03016.55
5.4.80.0070.03316.36
5.4.70.0030.03716.39
5.4.60.0000.04016.31
5.4.50.0000.03316.38
5.4.40.0100.02316.42
5.4.30.0030.03016.45
5.4.20.0070.03716.36
5.4.10.0100.03316.45
5.4.00.0000.03315.81
5.3.290.0100.03314.69
5.3.280.0070.07314.77
5.3.270.0000.03714.75
5.3.260.0070.03014.70
5.3.250.0000.03314.70
5.3.240.0000.06714.57
5.3.230.0030.05714.70
5.3.220.0030.06014.68
5.3.210.0030.03014.75
5.3.200.0030.03714.54
5.3.190.0000.03314.63
5.3.180.0000.06314.66
5.3.170.0070.02714.64
5.3.160.0030.03314.67
5.3.150.0030.04314.66
5.3.140.0130.02714.72
5.3.130.0030.03714.73
5.3.120.0030.03314.59
5.3.110.0030.03714.68
5.3.100.0030.03714.00
5.3.90.0000.03714.20
5.3.80.0130.02014.09
5.3.70.0130.02314.15
5.3.60.0000.03314.16
5.3.50.0000.03314.02
5.3.40.0000.04013.99
5.3.30.0030.03014.01
5.3.20.0030.04713.64
5.3.10.0000.03013.84
5.3.00.0070.03013.61
5.2.170.0030.02711.12
5.2.160.0030.02311.09
5.2.150.0000.03011.05
5.2.140.0030.02711.17
5.2.130.0030.02311.13
5.2.120.0030.02311.20
5.2.110.0070.02011.15
5.2.100.0030.02311.25
5.2.90.0030.03711.28
5.2.80.0000.02711.14
5.2.70.0070.02011.09
5.2.60.0000.02711.13
5.2.50.0030.02311.13
5.2.40.0000.03011.00
5.2.30.0070.03311.00
5.2.20.0030.05711.03
5.2.10.0030.02310.82
5.2.00.0030.06010.77
5.1.60.0100.01710.16
5.1.50.0030.02710.16
5.1.40.0000.05010.16
5.1.30.0030.04010.39
5.1.20.0070.04710.41
5.1.10.0000.04710.16
5.1.00.0030.02310.24
5.0.50.0030.01710.16
5.0.40.0030.02710.16
5.0.30.0070.02710.16
5.0.20.0070.04010.16
5.0.10.0030.04010.16
5.0.00.0000.03310.16
4.4.90.0030.01010.16
4.4.80.0030.01010.16
4.4.70.0000.01710.16
4.4.60.0000.01310.16
4.4.50.0030.02310.16
4.4.40.0070.02710.16
4.4.30.0030.01010.16
4.4.20.0000.03710.16
4.4.10.0000.01710.16
4.4.00.0030.03710.16
4.3.110.0030.01710.16
4.3.100.0000.02010.16
4.3.90.0000.02010.16
4.3.80.0000.05010.16
4.3.70.0070.02010.16
4.3.60.0000.02310.16
4.3.50.0030.01310.16
4.3.40.0030.02310.16
4.3.30.0070.02710.16
4.3.20.0000.03710.16
4.3.10.0030.03010.16
4.3.00.0030.03010.16

preferences:
67.53 ms | 401 KiB | 5 Q