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run code in 200+ php & hhvm versions
Bugs & Features
<?php $category = [ [ 'sort_id' => 11, 'sort_name' => '一级目录', 'sort_child' => 0 ], [ 'sort_id' => 12, 'sort_name' => '二级目录', 'sort_child' => 11 ], [ 'sort_id' => 13, 'sort_name' => '二级目录', 'sort_child' => 11 ], [ 'sort_id' => 14, 'sort_name' => '三级目录', 'sort_child' => 13 ], [ 'sort_id' => 15, 'sort_name' => '三级目录', 'sort_child' => 13 ], [ 'sort_id' => 16, 'sort_name' => '三级目录', 'sort_child' => 13 ], [ 'sort_id' => 17, 'sort_name' => '一级目录2', 'sort_child' => 0 ], [ 'sort_id' => 18, 'sort_name' => '三级目录', 'sort_child' => 12 ], [ 'sort_id' => 19, 'sort_name' => '三级目录', 'sort_child' => 12 ] ]; $newCategory = []; processCategory($category, 0, $newCategory); $leave = 0; foreach ($newCategory as $currentCategory) { echo $currentCategory['sort_name']; } function processCategory(&$category, $parrentId, &$newCategory) { foreach ($category as $currentCategory) { if ($currentCategory['sort_child'] != $parrentId) continue; array_push($newCategory, $currentCategory); processCategory( $category, $currentCategory['sort_id'], $newCategory ); } }
based on pL93U
Output for 5.4.0 - 7.3.0rc2
一级目录二级目录三级目录三级目录二级目录三级目录三级目录三级目录一级目录2
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/KQ8dM on line 2
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/KQ8dM on line 2
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/KQ8dM on line 2
Process exited with code 255.