3v4l.org

run code in 300+ PHP versions simultaneously
<?php function buildTree(array $elements, $parentId = '-1') { $branch = array(); foreach ($elements as $key => $value) { if ($value == $parentId) { $children = buildTree($elements, $key); $branch[$parentId] = $children; } } $branch[$parentId] = []; return $branch; } function recursivePrint($elements) { foreach ($elements as $key => $value) { echo 'count: '.count($value)."\n"; echo $key."\n"; recursivePrint($value); } } $childParent = ['0-1-2-3-4' => '-1', '0-1' => '-1', '3-4' => '0-1', '5-6' => '3-4', '5-6' => '01324']; $tree = buildTree($childParent); recursivePrint($tree);

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)
8.3.60.0070.01016.63
8.3.50.0070.00716.55
8.3.40.0100.01018.67
8.3.30.0040.01118.85
8.3.20.0050.00221.90
8.3.10.0040.00423.69
8.3.00.0080.00019.79
8.2.180.0090.00916.50
8.2.170.0080.00822.96
8.2.160.0110.00421.02
8.2.150.0040.00424.18
8.2.140.0000.00724.66
8.2.130.0040.00420.30
8.2.120.0080.00026.35
8.2.110.0060.00320.24
8.2.100.0040.01017.84
8.2.90.0060.00319.20
8.2.80.0040.00417.97
8.2.70.0060.00317.50
8.2.60.0040.00417.93
8.2.50.0060.00318.10
8.2.40.0000.00820.59
8.2.30.0030.00521.08
8.2.20.0050.00318.14
8.2.10.0000.00718.11
8.2.00.0040.00418.04
8.1.280.0120.00625.92
8.1.270.0130.00023.99
8.1.260.0040.00426.35
8.1.250.0040.00428.09
8.1.240.0100.00023.77
8.1.230.0090.00322.63
8.1.220.0000.00817.75
8.1.210.0040.00418.77
8.1.200.0030.00617.36
8.1.190.0050.00317.35
8.1.180.0040.00418.10
8.1.170.0050.00318.71
8.1.160.0030.00618.78
8.1.150.0000.00720.18
8.1.140.0000.00719.56
8.1.130.0030.00519.00
8.1.120.0070.00017.38
8.1.110.0030.00617.44
8.1.100.0000.00817.47
8.1.90.0000.00817.38
8.1.80.0000.00817.54
8.1.70.0030.00317.48
8.1.60.0050.00317.58
8.1.50.0070.00317.44
8.1.40.0060.00317.58
8.1.30.0040.00417.63
8.1.20.0000.00817.59
8.1.10.0080.00017.58
8.1.00.0000.00917.56
8.0.300.0090.00018.77
8.0.290.0070.00016.63
8.0.280.0000.00718.50
8.0.270.0030.00317.19
8.0.260.0000.00616.94
8.0.250.0040.00416.96
8.0.240.0080.00016.86
8.0.230.0030.00516.99
8.0.220.0030.00316.89
8.0.210.0070.00016.79
8.0.200.0000.00616.87
8.0.190.0050.00316.98
8.0.180.0000.00916.88
8.0.170.0000.00816.84
8.0.160.0040.00416.93
8.0.150.0000.00816.93
8.0.140.0050.00216.86
8.0.130.0060.00013.39
8.0.120.0000.00916.77
8.0.110.0030.00516.73
8.0.100.0090.00016.82
8.0.90.0050.00216.78
8.0.80.0170.00316.93
8.0.70.0000.00716.88
8.0.60.0000.00716.75
8.0.50.0040.00417.01
8.0.30.0020.01717.13
8.0.20.0140.00717.40
8.0.10.0080.00017.02
8.0.00.0000.01816.87
7.4.330.0060.00015.55
7.4.320.0030.00316.61
7.4.300.0000.00616.51
7.4.290.0040.00416.64
7.4.280.0040.00416.41
7.4.270.0040.00416.53
7.4.260.0040.00416.63
7.4.250.0050.00316.50
7.4.240.0040.00416.57
7.4.230.0030.00316.72
7.4.220.0090.00916.62
7.4.210.0080.00816.55
7.4.200.0030.00316.73
7.4.160.0100.00916.52
7.4.150.0130.01017.40
7.4.140.0110.01017.86
7.4.130.0100.01316.62
7.4.120.0140.00816.63
7.4.110.0100.00716.65
7.4.100.0080.00816.50
7.4.90.0110.00816.51
7.4.80.0100.00719.39
7.4.70.0230.00016.47
7.4.60.0120.00416.57
7.4.50.0070.01116.60
7.4.40.0060.00916.39
7.4.30.0060.01016.57
7.4.10.0090.00916.27
7.4.00.0070.00815.59
7.3.330.0030.00313.38
7.3.320.0020.00213.39
7.3.310.0000.00716.35
7.3.300.0070.00016.43
7.3.290.0050.00916.39
7.3.280.0110.00616.35
7.3.270.0030.01517.40
7.3.260.0100.01016.48
7.3.250.0070.01116.53
7.3.240.0050.01116.34
7.3.230.0070.01016.62
7.3.210.0130.01016.39
7.3.200.0100.00716.69
7.3.190.0060.00916.45
7.3.180.0150.00816.58
7.3.170.0140.00616.31
7.3.160.0130.00916.55
7.3.130.0130.00616.33
7.3.120.0100.00716.46
7.3.110.0060.00916.32
7.3.100.0090.00616.19
7.3.90.0090.00316.55
7.3.80.0060.00916.29
7.3.70.0030.01516.40
7.3.60.0110.00416.50
7.3.50.0060.00616.35
7.3.40.0040.00816.25
7.3.30.0030.01216.23
7.3.20.0030.01018.12
7.3.10.0030.00918.05
7.3.00.0130.00018.18
7.2.330.0100.00716.65
7.2.320.0040.01516.76
7.2.310.0100.00716.50
7.2.300.0030.01316.68
7.2.290.0070.01016.64
7.2.260.0040.01116.67
7.2.250.0070.01416.58
7.2.240.0090.00616.79
7.2.230.0030.01216.85
7.2.220.0090.00616.52
7.2.210.0000.01316.48
7.2.200.0060.01216.57
7.2.190.0090.00616.63
7.2.180.0060.01016.56
7.2.170.0060.00616.58
7.2.160.0030.01216.43
7.2.150.0060.00618.41
7.2.140.0070.01118.56
7.2.130.0140.00318.28
7.2.120.0040.00818.34
7.2.110.0040.00718.27
7.2.100.0060.01118.41
7.2.90.0030.00618.28
7.2.80.0060.00318.36
7.2.70.0030.00718.38
7.2.60.0090.00917.62
7.2.50.0060.00617.71
7.2.40.0080.00818.59
7.2.30.0060.01018.45
7.2.20.0090.00618.43
7.2.10.0090.00618.41
7.2.00.0150.00518.27
7.1.330.0070.00717.45
7.1.320.0060.00917.39
7.1.310.0120.00317.51
7.1.300.0070.00717.10
7.1.290.0030.00717.20
7.1.280.0060.01217.38
7.1.270.0090.00617.53
7.1.260.0070.00717.29
7.1.250.0060.00817.45
7.1.240.0030.00617.24
7.1.230.0120.00017.19
7.1.220.0030.00717.30
7.1.210.0060.00617.31
7.1.200.0030.00716.61
7.1.190.0070.00717.30
7.1.180.0060.00317.27
7.1.170.0000.01217.25
7.1.160.0070.00717.25
7.1.150.0120.00317.52
7.1.140.0140.00017.26
7.1.130.0030.01317.19
7.1.120.0070.00717.21
7.1.110.0120.00817.40
7.1.100.0040.01917.11
7.1.90.0120.01217.39
7.1.80.0210.00417.44
7.1.70.0050.01017.17
7.1.60.0950.01025.19
7.1.50.1350.01025.19
7.1.40.1170.01724.91
7.1.30.0970.00924.87
7.1.20.0810.01324.98
7.1.10.0600.01516.11
7.1.00.0700.01216.07
7.0.330.0040.00817.02
7.0.320.0070.00716.96
7.0.310.0040.00916.95
7.0.300.0120.00416.84
7.0.290.0070.00717.10
7.0.280.0090.00816.95
7.0.270.0100.00717.03
7.0.260.0110.00416.85
7.0.250.0070.00817.04
7.0.240.0090.00917.16
7.0.230.0000.01517.02
7.0.220.0060.01317.08
7.0.210.0120.00817.04
7.0.200.1470.01416.05
7.0.190.1500.00515.99
7.0.180.1180.01215.83
7.0.170.0920.00715.79
7.0.160.0900.00815.59
7.0.150.0560.01115.71
7.0.140.0900.01015.89
7.0.130.0800.00615.83
7.0.120.0840.01215.73
7.0.110.0550.00515.69
7.0.100.0670.01315.74
7.0.90.0550.01115.83
7.0.80.0520.01015.68
7.0.70.0770.01115.78
7.0.60.0800.00915.63
7.0.50.0530.01315.66
7.0.40.0540.00714.72
7.0.30.0770.01014.91
7.0.20.0430.00814.84
7.0.10.0550.01214.84
7.0.00.0670.01014.90
5.6.400.0030.01016.09
5.6.390.0130.00016.18
5.6.380.0030.01316.16
5.6.370.0060.00916.05
5.6.360.0150.00315.71
5.6.350.0060.01015.71
5.6.340.0000.01315.86
5.6.330.0190.00315.98
5.6.320.0060.01015.88
5.6.310.0000.01515.92
5.6.300.0040.01116.00
5.6.290.0060.01015.92
5.6.280.0090.00416.06
5.6.270.0030.01316.00
5.6.260.0070.00715.99
5.6.250.0100.00615.96
5.6.240.0080.00416.07
5.6.230.0030.00615.97
5.6.220.0100.00316.09
5.6.210.0060.01015.92
5.6.200.0090.00616.08
5.6.190.0030.00615.91
5.6.180.0090.00615.92
5.6.170.0130.00315.91
5.6.160.0120.00615.83
5.6.150.0090.00915.97
5.6.140.0060.00916.06
5.6.130.0070.00415.89
5.6.120.0070.00315.95
5.6.110.0090.00615.68
5.6.100.0030.01015.85
5.6.90.0070.00715.91
5.6.80.0030.01215.71
5.6.70.0110.00415.90
5.6.60.0060.00615.80
5.6.50.0030.00916.13
5.6.40.0000.00915.81
5.6.30.0000.01516.02
5.6.20.0000.00915.73
5.6.10.0000.01315.80
5.6.00.0080.00815.88

preferences:
57.5 ms | 401 KiB | 5 Q