3v4l.org

run code in 300+ PHP versions simultaneously
<?php $rows = [ ['id' => 1, 'parent_id' => 0, 'name' => 'parent'], ['id' => 2, 'parent_id' => 1, 'name' => 'child'], ['id' => 3, 'parent_id' => 2, 'name' => 'grandchild'], ['id' => 4, 'parent_id' => 0, 'name' => 'parent 2'], ['id' => 5, 'parent_id' => 4, 'name' => 'child 2'], ['id' => 6, 'parent_id' => 1, 'name' => 'child'], ]; function buildTree(array $elements, $parentId = 0) { $branch = array(); foreach ($elements as $element) { if ($element['parent_id'] == $parentId) { $children = buildTree($elements, $element['id']); if ($children) { $element['children'] = $children; } $branch[] = $element; } } return $branch; } $tree = buildTree($rows); print_r($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)
8.4.120.0090.00320.63
8.4.110.0150.00622.46
8.4.100.0050.00517.55
8.4.90.0140.00718.66
8.4.80.0110.00717.72
8.4.70.0100.01418.00
8.4.60.0140.00718.60
8.4.50.0110.00917.40
8.4.40.0100.01019.22
8.4.30.0040.00418.55
8.4.20.0110.00720.50
8.4.10.0030.01619.30
8.3.250.0110.00919.16
8.3.240.0140.00616.66
8.3.230.0080.01116.55
8.3.220.0120.00617.31
8.3.210.0130.00616.55
8.3.200.0030.00616.77
8.3.190.0090.01119.14
8.3.180.0140.00618.36
8.3.170.0140.00318.85
8.3.160.0120.00318.49
8.3.150.0150.00320.53
8.3.140.0070.00716.63
8.3.130.0000.00816.60
8.3.120.0030.00518.82
8.3.110.0080.00020.94
8.3.100.0040.00416.54
8.3.90.0050.00218.30
8.3.80.0060.00318.55
8.3.70.0120.00316.63
8.3.60.0150.00618.55
8.3.50.0070.01117.29
8.3.40.0090.00618.68
8.3.30.0140.00018.71
8.3.20.0050.00321.81
8.3.10.0050.00321.82
8.3.00.0040.00423.63
8.2.290.0080.01122.41
8.2.280.0120.01018.47
8.2.270.0060.00317.09
8.2.260.0030.00619.93
8.2.250.0080.00018.27
8.2.240.0030.00618.81
8.2.230.0060.00322.58
8.2.220.0040.00424.06
8.2.210.0050.00326.77
8.2.200.0060.00318.04
8.2.190.0040.01116.75
8.2.180.0070.01416.63
8.2.170.0150.00022.96
8.2.160.0070.00720.39
8.2.150.0080.00024.18
8.2.140.0050.00324.66
8.2.130.0050.00226.16
8.2.120.0040.00419.79
8.2.110.0030.00622.13
8.2.100.0060.00617.78
8.2.90.0090.00020.37
8.2.80.0040.00419.28
8.2.70.0000.00818.16
8.2.60.0050.00218.22
8.2.50.0040.00418.10
8.2.40.0030.00621.14
8.2.30.0050.00219.39
8.2.20.0000.00718.14
8.2.10.0030.00520.66
8.2.00.0070.00019.32
8.1.330.0130.00521.92
8.1.320.0150.00716.04
8.1.310.0060.00318.69
8.1.300.0050.00316.14
8.1.290.0040.00418.88
8.1.280.0120.00925.92
8.1.270.0050.00322.41
8.1.260.0040.00426.35
8.1.250.0080.00028.09
8.1.240.0060.00323.96
8.1.230.0110.00021.10
8.1.220.0040.00417.77
8.1.210.0030.00519.04
8.1.200.0040.00417.35
8.1.190.0090.00017.38
8.1.180.0060.00618.10
8.1.170.0050.00318.66
8.1.160.0000.00718.90
8.1.150.0040.00418.95
8.1.140.0030.00318.89
8.1.130.0030.00620.16
8.1.120.0050.00317.37
8.1.110.0080.00017.46
8.1.100.0020.00517.44
8.1.90.0040.00417.46
8.1.80.0000.00817.48
8.1.70.0000.00817.42
8.1.60.0080.00017.59
8.1.50.0040.00417.42
8.1.40.0030.00517.41
8.1.30.0050.00517.56
8.1.20.0000.00817.49
8.1.10.0000.00717.48
8.1.00.0030.00617.43
8.0.300.0000.00719.90
8.0.290.0000.01016.75
8.0.280.0040.00418.34
8.0.270.0000.00818.50
8.0.260.0070.00018.38
8.0.250.0000.00716.90
8.0.240.0030.00516.87
8.0.230.0050.00316.93
8.0.220.0020.00516.88
8.0.210.0070.00016.87
8.0.200.0000.00616.89
8.0.190.0040.00416.86
8.0.180.0040.00416.81
8.0.170.0000.00816.93
8.0.160.0040.00416.80
8.0.150.0000.00816.95
8.0.140.0040.00416.85
8.0.130.0060.00013.36
8.0.120.0040.00416.84
8.0.110.0040.00416.88
8.0.100.0000.00716.88
8.0.90.0000.00716.80
8.0.80.0110.00416.97
8.0.70.0000.00716.68
8.0.60.0070.00016.76
8.0.50.0030.00416.70
8.0.30.0060.00916.97
8.0.20.0100.01017.22
8.0.10.0050.00217.09
8.0.00.0090.00916.73
7.4.330.0050.00015.55
7.4.320.0030.00316.52
7.4.300.0040.00416.56
7.4.290.0000.00816.38
7.4.280.0050.00316.51
7.4.270.0000.00816.61
7.4.260.0000.00716.36
7.4.250.0070.00016.43
7.4.240.0030.00316.54
7.4.230.0070.00016.65
7.4.220.0040.00416.63
7.4.210.0070.00916.55
7.4.200.0070.00016.48
7.4.160.0070.00916.50
7.4.140.0100.01017.86
7.4.130.0030.01716.32
7.4.120.0090.00616.48
7.4.110.0090.00916.55
7.4.100.0080.00816.35
7.4.90.0060.01216.45
7.4.80.0130.00519.39
7.4.70.0100.00616.47
7.4.60.0090.00916.52
7.4.50.0090.00916.30
7.4.40.0100.00716.52
7.4.10.0070.01114.67
7.4.00.0030.01415.05
7.3.330.0020.00213.37
7.3.320.0000.00613.25
7.3.310.0050.00216.41
7.3.300.0020.00516.39
7.3.290.0060.00316.29
7.3.280.0100.00916.35
7.3.260.0140.00616.44
7.3.240.0090.00916.42
7.3.230.0100.00916.45
7.3.210.0090.01216.33
7.3.200.0100.00716.64
7.3.190.0060.00916.45
7.3.180.0030.01716.35
7.3.170.0120.00916.32
7.3.160.0050.01016.37
7.3.130.0080.00815.11
7.3.120.0070.01014.77
7.3.110.0090.00614.71
7.3.100.0100.00315.04
7.3.90.0060.00315.05
7.3.80.0060.00314.99
7.3.70.0040.00814.76
7.3.60.0090.00614.87
7.3.50.0070.00514.73
7.3.40.0020.01014.76
7.3.30.0090.00714.83
7.3.20.0120.00815.72
7.3.10.0100.00515.79
7.3.00.0090.00415.63
7.2.330.0100.00716.70
7.2.320.0110.01216.66
7.2.310.0070.01016.76
7.2.300.0070.01116.75
7.2.290.0110.00716.71
7.2.260.0100.01014.95
7.2.250.0070.01115.29
7.2.240.0070.00715.24
7.2.230.0070.00715.18
7.2.220.0100.00714.80
7.2.210.0030.01214.78
7.2.200.0100.00315.06
7.2.190.0090.00515.08
7.2.180.0060.00914.89
7.2.170.0050.01114.90
7.2.160.0080.00815.01
7.2.150.0100.00615.88
7.2.140.0300.00816.08
7.2.130.0110.00716.10
7.2.120.0110.00816.04
7.2.110.0130.00415.99
7.2.100.0120.00515.53
7.2.90.0100.00815.57
7.2.80.0100.00815.92
7.2.70.0100.00516.00
7.2.60.0100.00715.93
7.2.50.0130.00715.94
7.2.40.0080.00816.07
7.2.30.0080.00915.94
7.2.20.0080.01015.98
7.2.10.0140.00515.99
7.2.00.0070.00915.88
7.1.330.0000.01715.68
7.1.320.0100.00315.73
7.1.310.0080.00815.91
7.1.300.0140.00914.83
7.1.290.0090.00514.81
7.1.280.0120.00414.78
7.1.270.0230.00914.95
7.1.260.0130.00514.98
7.1.250.0080.00614.95
7.1.240.0000.00915.57
7.1.230.0080.00015.61
7.1.220.0040.01115.86
7.1.210.0040.01115.56
7.1.200.0030.01015.67
7.1.190.0130.00015.59
7.1.180.0030.01015.66
7.1.170.0030.01015.93
7.1.160.0040.00415.59
7.1.150.0070.00316.00
7.1.140.0030.01315.89
7.1.130.0030.01215.58
7.1.120.0100.00315.89
7.1.110.0030.01215.75
7.1.100.0030.01015.91
7.1.90.0090.00615.97
7.1.80.0080.00415.63
7.1.70.0000.00915.90
7.1.60.0050.00815.49
7.1.50.0040.00816.09
7.1.40.0030.00515.86
7.1.30.0030.01015.74
7.1.20.0000.01215.93
7.1.10.0030.01415.96
7.1.00.0100.00715.93

preferences:
141.52 ms | 403 KiB | 5 Q