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<?php function getTree($treeByParent, $treeByCat, $id, $lastId) { $gTree = []; if ($id != $lastId) { $gTree[] = $id; if ( isset($treeByCat[ $id ]) && count($treeByCat[ $id ]) > 0 ) $gTree = array_merge( getTree($treeByParent, $treeByCat, $treeByCat[ $id ], $id), $gTree); if ( isset($treeByParent[ $id ]) && count($treeByParent[ $id ]) > 0 ) { foreach ($treeByParent[ $id ] as $cat) { $gTree = array_merge( getTree($treeByParent, $treeByCat, $cat, $id), $gTree); } } return $gTree; } } function display_parent_nodes($data, $id) { $tree = array( "parents" => array(), "children" => array(), "full" => array() ); $current = $data[$id]; $parent_id = $current === NULL ? "NULL" : $current; $tree['parents'][] = $parent_id; while (isset($data[$parent_id])) { $current = $data[$parent_id]; $parent_id = $current === NULL ? "NULL" : $current; $tree['parents'][] = $parent_id; } echo implode(" > ", array_reverse($tree['parents'])); foreach ($childIds as $child_id) { $children = array_keys($data, $child); while (isset($data[$children])) { $current = $data[$children]; $child_id = $current === NULL ? "NULL" : $current; $tree['children'][] = $child_id; } } echo " > ". implode(" > ", $tree['children']); } $treeByParent = array( 0 => array(1, 2), 1 => array(3, 7), 3 => array(4), 4 => array(5), 5 => array(6, 8) ); $treeByCat = array( 1 => 0, 2 => 0, 3 => 1, 7 => 1, 4 => 3, 5 => 4, 6 => 5, 8 => 5 ); print_r( display_parent_nodes($treeByCat, 4) ); //print_r( getTree($treeByParent, $treeByCat, 4, 0) );
Output for 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
0 > 1 > 3 Warning: Undefined variable $childIds in /in/82Glm on line 47 Warning: foreach() argument must be of type array|object, null given in /in/82Glm on line 47 >
Output for 5.4.0 - 5.4.45, 5.5.0 - 5.5.38, 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.31, 7.4.0 - 7.4.33
0 > 1 > 3 Notice: Undefined variable: childIds in /in/82Glm on line 47 Warning: Invalid argument supplied for foreach() in /in/82Glm on line 47 >
Output for 7.3.32 - 7.3.33
0 > 1 > 3 Warning: Invalid argument supplied for foreach() in /in/82Glm on line 47 >
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/82Glm on line 6
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/82Glm on line 6
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/82Glm on line 6
Process exited with code 255.
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