3v4l.org

run code in 300+ PHP versions simultaneously
<?php function build(){ $items = [ 1=>['categories_id'=>1,'name'=>'父1','parent_id'=>0], 9=>['categories_id'=>9,'name'=>'儿3-1','parent_id'=>3], 15=>['categories_id'=>15,'name'=>'儿3-1-1','parent_id'=>14], 3=>['categories_id'=>3,'name'=>'父3','parent_id'=>0], 4=>['categories_id'=>4,'name'=>'儿1-1','parent_id'=>1], 6=>['categories_id'=>6,'name'=>'儿1-3','parent_id'=>1], 12=>['categories_id'=>12,'name'=>'儿2-1-1','parent_id'=>7], 2=>['categories_id'=>2,'name'=>'父2','parent_id'=>0], 5=>['categories_id'=>5,'name'=>'儿1-2','parent_id'=>1], 8=>['categories_id'=>8,'name'=>'儿2-1','parent_id'=>2], 11=>['categories_id'=>11,'name'=>'儿1-1-1','parent_id'=>4], 7=>['categories_id'=>7,'name'=>'儿2-1','parent_id'=>2], 10=>['categories_id'=>10,'name'=>'儿3-1-1','parent_id'=>9], 13=>['categories_id'=>13,'name'=>'儿3-1-1','parent_id'=>10], 14=>['categories_id'=>14,'name'=>'儿3-1-1','parent_id'=>13], 16=>['categories_id'=>16,'name'=>'儿3-1-1','parent_id'=>10], ]; $tree = array(); foreach($items as $cid => $item){ if(isset($items[$item['parent_id']])){ // var_dump($tree); $items[$item['parent_id']]['childs'][$cid] = &$items[$cid]; }else{ $tree[$cid] = &$items[$cid]; } } return $tree; } $tree = build(); // print_r($tree); function get($tree, $level) { // static $tree; $lv = 1; $res = array(); foreach ($tree as $cid => $item) { /*if ($item['parent_id'] == 0) { if ($lv == $level) { continue; } $res[$cid] = $item; $lv ++; }*/ // var_dump($item); if (is_array($item) && $item['parent_id'] == 0) { $lv = 1; } if (is_array($item)) { $lv ++; return get($item, $level); } var_dump($lv); } } $get = get($tree, 2); // var_dump($get);

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)
8.3.70.0160.00618.68
8.3.60.0060.01316.75
8.3.50.0120.00316.41
8.3.40.0200.00018.96
8.3.30.0120.00318.66
8.3.20.0000.00819.14
8.3.10.0050.00319.29
8.3.00.0080.00019.78
8.2.190.0130.01016.88
8.2.180.0110.01118.29
8.2.170.0090.00922.96
8.2.160.0110.00420.93
8.2.150.0080.00024.18
8.2.140.0080.00024.66
8.2.130.0050.00319.77
8.2.120.0000.00726.35
8.2.110.0100.00721.04
8.2.100.0000.01117.97
8.2.90.0000.00819.22
8.2.80.0040.00417.97
8.2.70.0040.00417.93
8.2.60.0040.00417.93
8.2.50.0070.00218.10
8.2.40.0090.00021.15
8.2.30.0070.00019.55
8.2.20.0050.00318.19
8.2.10.0040.00418.02
8.2.00.0070.00019.50
8.1.280.0100.01025.92
8.1.270.0000.00823.74
8.1.260.0080.00026.35
8.1.250.0000.00828.09
8.1.240.0070.00319.21
8.1.230.0080.00420.50
8.1.220.0060.00317.74
8.1.210.0040.00418.77
8.1.200.0060.00317.35
8.1.190.0090.00017.12
8.1.180.0040.00418.10
8.1.170.0000.00918.71
8.1.160.0060.00318.95
8.1.150.0000.00718.82
8.1.140.0080.00017.78
8.1.130.0080.00019.09
8.1.120.0040.00417.38
8.1.110.0060.00317.46
8.1.100.0000.00817.53
8.1.90.0040.00417.37
8.1.80.0000.00817.46
8.1.70.0030.00317.44
8.1.60.0080.00017.52
8.1.50.0040.00417.52
8.1.40.0080.00017.55
8.1.30.0060.00617.60
8.1.20.0040.00417.67
8.1.10.0040.00417.54
8.1.00.0040.00417.49
8.0.300.0000.00718.77
8.0.290.0070.00016.75
8.0.280.0070.00018.38
8.0.270.0070.00017.28
8.0.260.0070.00019.09
8.0.250.0070.00017.04
8.0.240.0000.00717.00
8.0.230.0080.00016.93
8.0.220.0050.00316.98
8.0.210.0040.00416.85
8.0.200.0060.00017.03
8.0.190.0000.00816.90
8.0.180.0000.00717.00
8.0.170.0070.00316.95
8.0.160.0020.00516.94
8.0.150.0090.00016.89
8.0.140.0050.00316.82
8.0.130.0030.00313.41
8.0.120.0040.00416.91
8.0.110.0040.00416.93
8.0.100.0070.00016.84
8.0.90.0040.00416.94
8.0.80.0060.01216.93
8.0.70.0000.00816.99
8.0.60.0040.00416.88
8.0.50.0000.00717.04
8.0.30.0080.00817.17
8.0.20.0070.01317.40
8.0.10.0000.00716.97
8.0.00.0070.01116.84
7.4.330.0030.00315.55
7.4.320.0000.00716.62
7.4.300.0030.00316.61
7.4.290.0040.00416.49
7.4.280.0060.00316.55
7.4.270.0030.00416.55
7.4.260.0070.00016.58
7.4.250.0020.00516.46
7.4.240.0000.00716.51
7.4.230.0000.00716.66
7.4.220.0040.00416.70
7.4.210.0090.00816.54
7.4.200.0040.00416.33
7.4.160.0090.00916.47
7.4.140.0120.00817.86
7.4.130.0110.00716.73
7.4.120.0110.00816.57
7.4.110.0150.00916.64
7.4.100.0080.00816.65
7.4.90.0150.00916.59
7.4.80.0060.01219.39
7.4.70.0030.01716.50
7.4.60.0100.00716.41
7.4.50.0100.00616.43
7.4.40.0070.01016.78
7.4.00.0030.01014.95
7.3.330.0070.00013.30
7.3.320.0030.00313.44
7.3.310.0000.00716.34
7.3.300.0000.00616.36
7.3.290.0000.00716.44
7.3.280.0070.00916.38
7.3.260.0090.00916.50
7.3.240.0100.00816.50
7.3.230.0060.01116.68
7.3.210.0130.00916.56
7.3.200.0000.01716.41
7.3.190.0090.00616.51
7.3.180.0110.00616.67
7.3.170.0080.00816.79
7.3.160.0030.01316.52
7.2.330.0150.00416.69
7.2.320.0090.01516.96
7.2.310.0150.00616.61
7.2.300.0030.01416.60
7.2.290.0100.01216.50
7.2.60.3320.00514.75
7.2.50.2920.01215.13
7.2.40.0970.01215.44
7.2.30.0410.01015.52
7.2.20.5650.01015.48
7.2.10.4940.00715.23
7.2.00.0150.01115.30
7.1.200.0070.00715.88
7.1.170.4540.01114.07
7.1.160.0150.00916.79
7.1.150.2390.01416.63
7.1.140.0950.01416.97
7.1.130.0320.01416.56
7.1.120.0170.01016.77
7.1.110.0260.01315.91
7.1.100.0640.01015.98
7.1.90.0110.01016.49
7.1.80.2360.01616.18
7.1.70.0110.00715.09
7.1.60.1040.01333.41
7.1.50.1340.00832.90
7.1.40.5130.01232.56
7.1.30.2000.01332.64
7.1.20.1690.01232.93
7.1.10.1210.01314.86
7.1.00.2070.01514.78

preferences:
62.23 ms | 401 KiB | 5 Q