3v4l.org

run code in 300+ PHP versions simultaneously
<?php function getTree(array $array) { $level = 0; $tree = []; $stack = [&$tree]; foreach($array as $item) { if($item['level']>$level) //expand stack for new items { //if there are child elements, add last to stack: $top = key($stack); if(count($stack[$top])) { end($stack[$top]); $stack[] = &$stack[$top][key($stack[$top])]; } //add ['children'] dim to top stack element end($stack); $top = key($stack); $stack[$top]['children'] = []; $stack[] = &$stack[$top]['children']; } while($item['level']<$level--) //pop till certain level { //two times: one for last pointer, one for ['children'] dim array_pop($stack); array_pop($stack); } //add item to stack top: end($stack); $stack[key($stack)][] = $item; $level = $item['level']; } return $tree; } $array = [ ['level'=>1, 'name' => 'Root #1'], ['level'=>1, 'name' => 'Root #2'], ['level'=>2, 'name' => 'subroot 2-1'], ['level'=>3, 'name' => '__subroot 2-1/1'], ['level'=>2, 'name' => 'subroot 2-2'], ['level'=>1, 'name' => 'Root #3'] ]; print_r(getTree($array));

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)
8.3.60.0030.01218.31
8.3.50.0130.01021.21
8.3.40.0120.00318.67
8.3.30.0100.00320.35
8.3.20.0070.00318.65
8.3.10.0080.00021.09
8.3.00.0050.00323.48
8.2.180.0150.00025.92
8.2.170.0110.00722.96
8.2.160.0120.00320.48
8.2.150.0040.00424.18
8.2.140.0120.00324.66
8.2.130.0000.00826.16
8.2.120.0080.00019.76
8.2.110.0040.00422.20
8.2.100.0080.00317.84
8.2.90.0030.00719.29
8.2.80.0040.00419.41
8.2.70.0060.00317.50
8.2.60.0040.00418.05
8.2.50.0040.00418.07
8.2.40.0090.00018.22
8.2.30.0030.00519.46
8.2.20.0000.00817.61
8.2.10.0040.00417.66
8.2.00.0030.00617.70
8.1.280.0090.00625.92
8.1.270.0070.01023.99
8.1.260.0060.00326.35
8.1.250.0000.00728.09
8.1.240.0090.00022.46
8.1.230.0000.01120.84
8.1.220.0080.00018.77
8.1.210.0030.00519.04
8.1.200.0060.00317.35
8.1.190.0050.00317.53
8.1.180.0040.00418.10
8.1.170.0000.00818.51
8.1.160.0040.00418.93
8.1.150.0030.00618.57
8.1.140.0000.00817.51
8.1.130.0030.00517.79
8.1.120.0050.00217.41
8.1.110.0000.00717.34
8.1.100.0050.00317.50
8.1.90.0070.00017.37
8.1.80.0000.00717.39
8.1.70.0070.00017.43
8.1.60.0080.00017.63
8.1.50.0000.00717.50
8.1.40.0040.00417.56
8.1.30.0040.00417.55
8.1.20.0040.00417.59
8.1.10.0030.00617.63
8.1.00.0030.00617.48
8.0.300.0040.00420.06
8.0.290.0070.00017.18
8.0.280.0030.00318.45
8.0.270.0000.00717.14
8.0.260.0000.00716.74
8.0.250.0050.00316.97
8.0.240.0000.00917.00
8.0.230.0030.00316.79
8.0.220.0030.00316.87
8.0.210.0040.00416.93
8.0.200.0030.00317.01
8.0.190.0030.00516.83
8.0.180.0070.00016.91
8.0.170.0080.00016.84
8.0.160.0070.00016.79
8.0.150.0040.00416.87
8.0.140.0040.00816.93
8.0.130.0050.00013.32
8.0.120.0040.00416.86
8.0.110.0050.00316.90
8.0.100.0040.00416.90
8.0.90.0040.00416.84
8.0.80.0120.00316.85
8.0.70.0080.00017.02
8.0.60.0040.00416.85
8.0.50.0030.00516.84
8.0.30.0130.00917.11
8.0.20.0080.01217.40
8.0.10.0040.00416.93
8.0.00.0140.01016.93
7.4.330.0000.00516.85
7.4.320.0000.00716.52
7.4.300.0050.00216.54
7.4.290.0070.00016.60
7.4.280.0040.00416.42
7.4.270.0000.00716.60
7.4.260.0000.00513.26
7.4.250.0040.00416.58
7.4.240.0030.00316.66
7.4.230.0040.00316.54
7.4.220.0130.00816.42
7.4.210.0070.01016.58
7.4.200.0000.00716.42
7.4.190.0040.00416.57
7.4.160.0080.00816.35
7.4.150.0070.01117.40
7.4.140.0070.01017.86
7.4.130.0110.00616.46
7.4.120.0110.00716.60
7.4.110.0030.01516.41
7.4.100.0060.01316.64
7.4.90.0140.00316.46
7.4.80.0120.01219.39
7.4.70.0110.01116.53
7.4.60.0060.01216.40
7.4.50.0030.00616.38
7.4.40.0030.01022.77
7.4.30.0120.00816.58
7.4.10.0000.01415.15
7.4.00.0080.01015.00
7.3.330.0030.00313.21
7.3.320.0050.00013.37
7.3.310.0040.00416.24
7.3.300.0050.00316.37
7.3.290.0060.00816.37
7.3.280.0070.00816.41
7.3.270.0070.01017.40
7.3.260.0140.00618.24
7.3.250.0060.01216.50
7.3.240.0130.00316.52
7.3.230.0120.01016.50
7.3.210.0070.01316.46
7.3.200.0100.01319.39
7.3.190.0030.01316.51
7.3.180.0080.00816.62
7.3.170.0100.00716.44
7.3.160.0130.00316.35
7.3.130.0040.01115.02
7.3.120.0070.00914.80
7.3.110.0110.00614.76
7.3.100.0050.01014.71
7.3.90.0070.01114.84
7.3.80.0040.00714.93
7.3.70.0050.01014.59
7.3.60.0040.01214.90
7.3.50.0050.01014.75
7.3.40.0090.00814.95
7.3.30.0020.01214.75
7.3.20.0070.00916.60
7.3.10.0060.00616.64
7.3.00.0010.00916.74
7.2.330.0100.00716.40
7.2.320.0170.00716.82
7.2.310.0070.01516.51
7.2.300.0000.01516.55
7.2.290.0040.01216.81
7.2.260.0030.01615.09
7.2.250.0110.00615.15
7.2.240.0090.00915.18
7.2.230.0050.01415.26
7.2.220.0030.01415.29
7.2.210.0070.00714.90
7.2.200.0040.01115.18
7.2.190.0080.01015.09
7.2.180.0020.01414.92
7.2.170.0130.00614.93
7.2.160.0060.00615.03
7.2.150.0040.01116.84
7.2.140.0040.01517.01
7.2.130.0030.00816.87
7.2.120.0020.01116.90
7.2.110.0030.01116.96
7.2.100.0110.00316.93
7.2.90.0070.00616.99
7.2.80.0030.01216.84
7.2.70.0040.01016.83
7.2.60.0070.00816.99
7.2.50.0050.01016.90
7.2.40.0070.01117.03
7.2.30.0060.00816.89
7.2.20.0050.00816.99
7.2.10.0050.00716.98
7.2.00.0050.00817.73
7.1.330.0100.00415.73
7.1.320.0110.00515.97
7.1.310.0030.01015.83
7.1.300.0040.00915.67
7.1.290.0040.01115.78
7.1.280.0110.00615.92
7.1.270.0070.00715.70
7.1.260.0030.01215.83
7.1.250.0120.00015.97
7.1.240.0030.01015.76
7.1.230.0030.01515.79
7.1.220.0040.00715.59
7.1.210.0000.01215.76
7.1.200.0070.00615.80
7.1.190.0070.00715.92
7.1.180.0040.00815.95
7.1.170.0030.01315.58
7.1.160.0110.00015.97
7.1.150.0030.00915.86
7.1.140.0070.01015.90
7.1.130.0070.00415.77
7.1.120.0030.00715.80
7.1.110.0040.00815.98
7.1.100.0080.00516.96
7.1.90.0070.00715.87
7.1.80.0000.01015.89
7.1.70.0070.00616.51
7.1.60.0070.01317.36
7.1.50.0080.00816.35
7.1.40.0160.00015.65
7.1.30.0030.00615.53
7.1.20.0030.00615.82
7.1.10.0070.00715.58
7.1.00.0040.03919.03
7.0.330.0170.00015.50
7.0.320.0060.00915.48
7.0.310.0070.00315.43
7.0.300.0110.00615.50
7.0.290.0070.01015.45
7.0.280.0070.00715.46
7.0.270.0050.00515.41
7.0.260.0040.01515.41
7.0.250.0040.01115.46
7.0.240.0120.00615.29
7.0.230.0060.00915.50
7.0.220.0090.00315.28
7.0.210.0030.01215.55
7.0.200.0080.00516.08
7.0.190.0080.00415.23
7.0.180.0030.01415.60
7.0.170.0000.01515.57
7.0.160.0120.00315.11
7.0.150.0150.00315.63
7.0.140.0070.04218.70
7.0.130.0050.00515.48
7.0.120.0000.01815.59
7.0.110.0170.00015.24
7.0.100.0070.00715.55
7.0.90.0030.00715.32
7.0.80.0110.00415.38
7.0.70.0060.01215.26
7.0.60.0130.03317.74
7.0.50.0080.04216.77
7.0.40.0060.04816.64
7.0.30.0270.02916.81
7.0.20.0170.04316.76
7.0.10.0130.03916.79
7.0.00.0170.02716.85
5.6.400.0030.01614.21
5.6.390.0130.00314.54
5.6.380.0090.00614.41
5.6.370.0100.00714.58
5.6.360.0040.01214.75
5.6.350.0000.01014.49
5.6.340.0110.00414.46
5.6.330.0140.00414.66
5.6.320.0030.01714.41
5.6.310.0040.01114.37
5.6.300.0060.01214.78
5.6.290.0000.01314.72
5.6.280.0120.03317.84
5.6.270.0030.01314.65
5.6.260.0100.00314.73
5.6.250.0090.00314.76
5.6.240.0040.01114.69
5.6.230.0180.00014.67
5.6.220.0100.01014.45
5.6.210.0040.04817.62
5.6.200.0050.04716.33
5.6.190.0120.04617.46
5.6.180.0100.04317.34
5.6.170.0150.02317.49
5.6.160.0050.03117.54
5.6.150.0080.02716.38
5.6.140.0040.03416.17
5.6.130.0050.03216.39
5.6.120.0050.03817.77
5.6.110.0080.04617.71
5.6.100.0100.03517.75
5.6.90.0060.03817.65
5.6.80.0070.04217.60
5.6.70.0100.00714.48
5.6.60.0070.01014.29
5.6.50.0030.01714.56
5.6.40.0100.00614.15
5.6.30.0000.01514.58
5.6.20.0070.01014.47
5.6.10.0100.01014.32
5.6.00.0160.00314.56
5.5.380.0060.00614.34
5.5.370.0120.00614.34
5.5.360.0120.00414.53
5.5.350.0070.04017.59
5.5.340.0050.03316.29
5.5.330.0060.02617.41
5.5.320.0100.04717.49
5.5.310.0180.04117.46
5.5.300.0070.03316.07
5.5.290.0120.02716.22
5.5.280.0120.03617.56
5.5.270.0030.05017.69
5.5.260.0050.04917.59
5.5.250.0080.03817.45
5.5.240.0100.04117.28
5.5.230.0060.01214.10
5.5.220.0130.00613.99
5.5.210.0070.01314.49
5.5.200.0040.01214.25
5.5.190.0140.00314.43
5.5.180.0060.01014.53
5.5.170.0130.00614.32
5.5.160.0040.01814.18
5.5.150.0040.00714.41
5.5.140.0040.01613.91
5.5.130.0130.00314.48
5.5.120.0000.01614.77
5.5.110.0000.01414.18
5.5.100.0080.00414.07
5.5.90.0070.01114.46
5.5.80.0070.01114.40
5.5.70.0070.00714.41
5.5.60.0030.01214.63
5.5.50.0090.00914.34
5.5.40.0030.01014.67
5.5.30.0060.00913.96
5.5.20.0090.00614.09
5.5.10.0100.00314.53
5.5.00.0070.00714.28
5.4.450.0130.04315.31
5.4.440.0120.02115.34
5.4.430.0160.02215.23
5.4.420.0100.03415.41
5.4.410.0080.02615.28
5.4.400.0120.02215.11
5.4.390.0180.02615.23
5.4.380.0150.02214.99
5.4.370.0150.02515.11
5.4.360.0090.02415.18
5.4.350.0080.02715.10
5.4.340.0080.02615.11
5.4.330.0130.00011.12
5.4.320.0140.02715.06
5.4.310.0100.02115.12
5.4.300.0080.02415.00
5.4.290.0090.02415.16
5.4.280.0070.02315.15
5.4.270.0130.01915.14
5.4.260.0130.02015.26
5.4.250.0110.02515.13
5.4.240.0120.02115.06
5.4.230.0080.02215.05
5.4.220.0070.02515.24
5.4.210.0080.02515.20
5.4.200.0070.02415.31
5.4.190.0080.02315.01
5.4.180.0120.02215.17
5.4.170.0130.01814.97
5.4.160.0100.02215.06
5.4.150.0140.01715.23
5.4.140.0090.02113.79
5.4.130.0110.02313.84
5.4.120.0150.01713.90
5.4.110.0180.02213.75
5.4.100.0100.02213.85
5.4.90.0100.02213.84
5.4.80.0140.02713.87
5.4.70.0130.02013.88
5.4.60.0130.02013.73
5.4.50.0150.03013.91
5.4.40.0080.02713.94
5.4.30.0140.02513.67
5.4.20.0120.03813.71
5.4.10.0100.03013.95
5.4.00.0100.03213.49
5.3.290.0070.02312.51
5.3.280.0100.02012.39
5.3.270.0100.01812.50
5.3.260.0080.02312.40
5.3.250.0100.02012.54
5.3.240.0080.02012.40
5.3.230.0100.02012.45
5.3.220.0080.02012.39
5.3.210.0090.02212.39
5.3.200.0100.03912.43
5.3.190.0080.02812.42
5.3.180.0070.03012.41
5.3.170.0130.03612.55
5.3.160.0070.02212.60
5.3.150.0070.03912.45
5.3.140.0080.03012.46
5.3.130.0120.03212.52
5.3.120.0030.03912.39
5.3.110.0090.04112.49
5.3.100.0110.02312.17
5.3.90.0130.01812.20
5.3.80.0080.02312.16
5.3.70.0100.04212.16
5.3.60.0130.02012.20
5.3.50.0120.02012.14
5.3.40.0100.02212.08
5.3.30.0150.01812.10
5.3.20.0080.01911.97
5.3.10.0120.02511.93
5.3.00.0100.02211.96
5.2.170.0130.03011.26
5.2.160.0130.02711.22
5.2.150.0170.02711.05
5.2.140.0170.02311.07
5.2.130.0100.03011.03
5.2.120.0100.03011.02
5.2.110.0130.02711.21
5.2.100.0130.02711.26
5.2.90.0070.03311.01
5.2.80.0130.02711.02
5.2.70.0230.05011.00
5.2.60.0100.03010.97
5.2.50.0070.03311.14
5.2.40.0130.05711.15
5.2.30.0200.04310.95
5.2.20.0170.02311.02
5.2.10.0130.03010.94
5.2.00.0130.02710.67
5.1.60.0100.0239.89
5.1.50.0030.03010.22
5.1.40.0130.0239.97
5.1.30.0200.02010.31
5.1.20.0100.05010.27
5.1.10.0030.0309.99
5.1.00.0100.02310.07
5.0.50.0070.0209.89
5.0.40.0030.0209.89
5.0.30.0030.0339.89
5.0.20.0070.0179.89
5.0.10.0030.0279.89
5.0.00.0030.0309.89
4.4.90.0030.0179.89
4.4.80.0070.0139.89
4.4.70.0100.0109.89
4.4.60.0130.0079.89
4.4.50.0070.0179.89
4.4.40.0070.0279.89
4.4.30.0070.0139.89
4.4.20.0070.0139.89
4.4.10.0100.0139.89
4.4.00.0100.0209.89
4.3.110.0000.0209.89
4.3.100.0000.0339.89
4.3.90.0030.0179.89
4.3.80.0030.0439.89
4.3.70.0070.0139.89
4.3.60.0100.0179.89
4.3.50.0070.0139.89
4.3.40.0000.0279.89
4.3.30.0000.0179.89
4.3.20.0000.0179.89
4.3.10.0000.0179.89
4.3.00.0000.0179.89

preferences:
48.82 ms | 401 KiB | 5 Q