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 $key."\n"; recursivePrint($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)
8.3.60.0120.00916.50
8.3.50.0130.00916.37
8.3.40.0130.00318.50
8.3.30.0070.00718.71
8.3.20.0070.00021.77
8.3.10.0040.00423.55
8.3.00.0080.00019.97
8.2.180.0070.00716.88
8.2.170.0090.00622.96
8.2.160.0100.00320.99
8.2.150.0030.00525.66
8.2.140.0040.00424.66
8.2.130.0000.00720.53
8.2.120.0050.00326.35
8.2.110.0100.00022.14
8.2.100.0090.00317.84
8.2.90.0080.00020.07
8.2.80.0060.00318.16
8.2.70.0000.00817.78
8.2.60.0060.00318.22
8.2.50.0000.00818.10
8.2.40.0040.00420.59
8.2.30.0080.00021.14
8.2.20.0040.00418.20
8.2.10.0040.00418.13
8.2.00.0000.00718.13
8.1.280.0140.00425.92
8.1.270.0000.00823.91
8.1.260.0050.00326.35
8.1.250.0050.00228.09
8.1.240.0090.00022.14
8.1.230.0070.00420.99
8.1.220.0000.00817.74
8.1.210.0050.00318.77
8.1.200.0000.00817.36
8.1.190.0040.00417.53
8.1.180.0060.00318.10
8.1.170.0000.00818.51
8.1.160.0040.00418.97
8.1.150.0040.00420.29
8.1.140.0040.00419.59
8.1.130.0080.00018.84
8.1.120.0020.00517.50
8.1.110.0070.00017.47
8.1.100.0040.00417.40
8.1.90.0030.00417.45
8.1.80.0000.00717.45
8.1.70.0000.00717.47
8.1.60.0040.00417.61
8.1.50.0040.00417.59
8.1.40.0030.00617.52
8.1.30.0000.00817.64
8.1.20.0000.00717.63
8.1.10.0050.00217.63
8.1.00.0000.00717.53
8.0.300.0040.00419.64
8.0.290.0040.00416.75
8.0.280.0050.00218.37
8.0.270.0030.00317.19
8.0.260.0030.00316.91
8.0.250.0040.00417.02
8.0.240.0000.00816.86
8.0.230.0000.00716.86
8.0.220.0000.00716.87
8.0.210.0000.00816.90
8.0.200.0060.00016.97
8.0.190.0030.00717.00
8.0.180.0080.00016.95
8.0.170.0050.00216.96
8.0.160.0000.00816.86
8.0.150.0030.00616.85
8.0.140.0050.00316.79
8.0.130.0030.00313.31
8.0.120.0040.00416.91
8.0.110.0000.00716.94
8.0.100.0040.00416.72
8.0.90.0040.00416.84
8.0.80.0100.01016.94
8.0.70.0000.00716.70
8.0.60.0070.00016.85
8.0.50.0000.00716.96
8.0.30.0080.01217.19
8.0.20.0050.01417.40
8.0.10.0050.00317.14
8.0.00.0180.00016.72
7.4.330.0020.00215.55
7.4.320.0030.00316.44
7.4.300.0060.00016.62
7.4.290.0000.00716.52
7.4.280.0000.00916.59
7.4.270.0080.00016.63
7.4.260.0000.00716.61
7.4.250.0000.00816.39
7.4.240.0050.00216.61
7.4.230.0000.00716.64
7.4.220.0080.01216.58
7.4.210.0000.01516.60
7.4.200.0000.00716.43
7.4.160.0100.00616.38
7.4.150.0200.00017.40
7.4.140.0140.00817.86
7.4.130.0040.01316.53
7.4.120.0110.00816.52
7.4.110.0070.01416.54
7.4.100.0030.01316.53
7.4.90.0120.00916.48
7.4.80.0080.00819.39
7.4.70.0090.00916.45
7.4.60.0060.00916.61
7.4.50.0070.01016.41
7.4.40.0130.01016.70
7.4.30.0100.00516.50
7.4.00.0030.01314.91
7.3.330.0050.00013.33
7.3.320.0030.00313.20
7.3.310.0070.00016.42
7.3.300.0070.00016.32
7.3.290.0070.00916.36
7.3.280.0100.00716.36
7.3.270.0170.00617.40
7.3.260.0140.00916.45
7.3.250.0100.00816.52
7.3.240.0070.00916.54
7.3.230.0100.00716.38
7.3.210.0090.00716.29
7.3.200.0040.01216.54
7.3.190.0060.00916.63
7.3.180.0000.02216.62
7.3.170.0100.00616.48
7.3.160.0070.01016.41
7.3.120.0100.00715.13
7.3.110.0060.01314.99
7.3.100.0120.00315.09
7.3.90.0070.00715.02
7.3.80.0040.01115.08
7.3.70.0000.01415.01
7.3.60.0060.00814.86
7.3.50.0030.01414.70
7.3.40.0040.01114.79
7.3.30.0040.00814.86
7.3.20.0090.00316.76
7.3.10.0040.00816.83
7.3.00.0070.00716.67
7.2.330.0060.01116.89
7.2.320.0060.01116.50
7.2.310.0070.01016.71
7.2.300.0130.00316.55
7.2.290.0090.00916.58
7.2.250.0070.01115.30
7.2.240.0000.01514.75
7.2.230.0080.00815.39
7.2.220.0070.00715.23
7.2.210.0090.00615.16
7.2.200.0070.00715.09
7.2.190.0000.01415.18
7.2.180.0190.00015.28
7.2.170.0090.00915.13
7.2.160.0000.01414.93
7.2.150.0070.00317.01
7.2.140.0060.00916.92
7.2.130.0060.00617.06
7.2.120.0090.00016.73
7.2.110.0040.01516.95
7.2.100.0000.01516.78
7.2.90.0120.00316.96
7.2.80.0000.01117.09
7.2.70.0100.00717.04
7.2.60.0090.00516.94
7.2.50.0050.01216.97
7.2.40.0030.01316.94
7.2.30.0060.00917.00
7.2.20.0060.00917.02
7.2.10.0100.00317.08
7.2.00.0090.00616.96
7.1.330.0070.01015.86
7.1.320.0030.00916.11
7.1.310.0070.00715.84
7.1.300.0100.00315.81
7.1.290.0030.00915.94
7.1.280.0040.00416.00
7.1.270.0070.01015.59
7.1.260.0040.01115.96
7.1.250.0080.00315.81
7.1.240.0040.01115.56
7.1.230.0100.00315.82
7.1.220.0070.00715.74
7.1.210.0030.01015.66
7.1.200.0050.00515.77
7.1.190.0070.00715.78
7.1.180.0100.00315.98
7.1.170.0030.01315.70
7.1.160.0120.00015.80
7.1.150.0030.01215.94
7.1.140.0000.01315.70
7.1.130.0000.01315.50
7.1.120.0090.00816.02
7.1.110.0070.00715.43
7.1.100.0140.00415.86
7.1.90.0070.01015.97
7.1.80.0000.01115.74
7.1.70.0030.00716.50
7.1.60.0580.01024.47
7.1.50.0570.01424.40
7.1.40.0650.01424.22
7.1.30.0870.01024.23
7.1.20.0890.01224.33
7.1.10.1010.00815.19
7.1.00.0750.01215.20
7.0.330.0090.00315.55
7.0.320.0060.00315.22
7.0.310.0040.00415.18
7.0.300.0060.01015.40
7.0.290.0000.01115.21
7.0.280.0030.01315.34
7.0.270.0000.01615.43
7.0.260.0060.00615.42
7.0.250.0100.00315.61
7.0.240.0120.00615.56
7.0.230.0030.01315.65
7.0.220.0030.00915.48
7.0.210.0070.00715.45
7.0.200.0870.00315.19
7.0.190.0580.00715.11
7.0.180.0520.00815.02
7.0.170.1230.00614.95
7.0.160.1260.01114.80
7.0.150.0630.00815.02
7.0.140.0970.01414.91
7.0.130.0600.01215.11
7.0.120.0910.01015.18
7.0.110.0650.01214.91
7.0.100.0830.00514.97
7.0.90.0770.00814.84
7.0.80.0650.00714.99
7.0.70.1270.01015.07
7.0.60.0680.00814.88
7.0.50.0750.01115.06
7.0.40.0860.01014.21
7.0.30.1150.00814.17
7.0.20.1010.00814.14
7.0.10.1030.01014.03
7.0.00.0980.01414.07
5.6.400.0000.00914.32
5.6.390.0040.00914.23
5.6.380.0070.00714.59
5.6.370.0100.00714.40
5.6.360.0070.00314.70
5.6.350.0120.00314.75
5.6.340.0080.00314.21
5.6.330.0070.00714.28
5.6.320.0150.00314.42
5.6.310.0150.00314.63
5.6.300.0000.01614.24
5.6.290.0100.00614.47
5.6.280.0030.01414.38
5.6.270.0060.00914.83
5.6.260.0080.00414.20
5.6.250.0040.01414.38
5.6.240.0060.00614.41
5.6.230.0070.01014.39
5.6.220.0040.01414.28
5.6.210.0130.00314.28
5.6.200.0090.00614.52
5.6.190.0120.00314.50
5.6.180.0030.00714.55
5.6.170.0000.01214.36
5.6.160.0070.00714.52
5.6.150.0060.00314.20
5.6.140.0000.01214.40
5.6.130.0030.01114.54
5.6.120.0040.01214.52
5.6.110.0000.01514.72
5.6.100.0040.01114.38
5.6.90.0030.01014.43
5.6.80.0100.00614.24
5.6.70.0090.00614.26
5.6.60.0070.00714.22
5.6.50.0080.00814.25
5.6.40.0060.00614.58
5.6.30.0030.01314.54
5.6.20.0090.00914.27
5.6.10.0030.01014.28
5.6.00.0040.00414.54

preferences:
73.05 ms | 400 KiB | 5 Q