Online PHP editor | rfc for FXeFb

@ 2014-05-26T05:27:33Z

<?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($tree, $id)
{

    $current = $tree[$id];
    $parent_id = $current === NULL ? "NULL" : $current;
    $parents = array();

    while (isset($tree[$parent_id])) {
        $current = $tree[$parent_id];
        $parent_id = $current === NULL ? "NULL" : $current;
        $parents[] = $parent_id;
    }

    echo implode(" > ", array_reverse($parents));
}


$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 git.master, git.master_jit, rfc.property-hooks: 0 > 1

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2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
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2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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