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run code in 150+ php & hhvm versions
Bugs & Features
<?php function getParentAndChild($data, $id) { $tree = array( "parents" => array(), "children" => array(), "full" => array() ); $current = $data[$id]; $parent_id = $current === NULL ? "NULL" : $current; $child_ids = array($id); $tree['parents'][] = $parent_id; while (isset($data[$parent_id])) { $current = $data[$parent_id]; $parent_id = $current === NULL ? "NULL" : $current; $tree['parents'][] = $parent_id; } while ( count($child_ids) > 0 ) { foreach($child_ids as $child_id) { $children = array_keys($data, $child_id); foreach ($children as $child) $tree['children'][] = $child; $child_ids = $children; } } $tree['full'] = array_merge(array_reverse($tree['parents']), $tree['children']); echo implode(" > ", $tree['full']); } $treeByCat = array( 1 => 0, 2 => 0, 3 => 1, 7 => 1, 4 => 3, 5 => 4, 6 => 5, 8 => 5 ); print_r( display_parent_nodes($treeByCat, 4) ); //print_r( getTree($treeByParent, $treeByCat, 4, 0) );
Output for 7.0.0 - 7.1.0
Fatal error: Uncaught Error: Call to undefined function display_parent_nodes() in /in/A4SuA:59 Stack trace: #0 {main} thrown in /in/A4SuA on line 59
Process exited with code 255.
Output for 5.0.0 - 5.0.5, 5.1.1 - 5.6.28, hhvm-3.10.0 - 3.12.0
Fatal error: Call to undefined function display_parent_nodes() in /in/A4SuA on line 59
Process exited with code 255.
Output for 5.1.0
Fatal error: fatal flex scanner internal error--end of buffer missed in /in/A4SuA on line 61
Process exited with code 255.
Output for 4.4.5 - 4.4.9
Fatal error: Call to undefined function: display_parent_nodes() in /in/A4SuA on line 59
Process exited with code 255.
Output for 4.3.2 - 4.4.4
Fatal error: Call to undefined function: display_parent_nodes() in /in/A4SuA on line 59
Process exited with code 255.
Output for 4.3.0 - 4.3.1
Fatal error: Call to undefined function: display_parent_nodes() in /in/A4SuA on line 59