@ 2015-11-29T15:05:33Z <?php
class CategoryTree
{
protected $roots = [];
public function addCategory($category, $parent)
{
if ($this->categoryExists($this->roots, $category) || !$this->categoryExists($this->roots, $parent)) {
throw new InvalidArgumentException();
}
if ($parent === null) {
$this->tree[$category] = [];
}
$node = $findNode($parent, $this->root);
if(!isset($node)) {
throw new InvalidArgumentException();
}
$node[$category] = [];
}
public function getChildren($parent)
{
$node = $findNode($parent, $this->root);
if(!isset($node)) {
throw new InvalidArgumentException();
}
return array_keys($node);
}
public function findNode($node, &$root) {
if (in_array($node, array_keys($root))) {
return $root[$node];
}
foreach ($root as $n) {
return $this->findNode($node, $n);
}
}
public function categoryExists($nodes, $category) {
$exists = false;
foreach($nodes as $node) {
if (in_array($category, $this->getChildren($node))) {
return true;
}
$exists = $this->categoryExists($node, $category);
}
return $exists;
}
}
// For testing purposes (do not submit uncommented):
$c = new CategoryTree;
$c->addCategory('A', null);
$c->addCategory('B', 'A');
$c->addCategory('C', 'A');
//echo implode(',', $c->getChildren('A'));
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Output for 7.0.0 - 7.0.20 , 7.1.0 - 7.1.33 , 7.2.0 - 7.2.33 , 7.3.0 - 7.3.33 , 7.4.0 - 7.4.33 , 8.0.0 - 8.0.30 , 8.1.0 - 8.1.28 , 8.2.0 - 8.2.18 , 8.3.0 - 8.3.6 Fatal error: Uncaught InvalidArgumentException in /in/VhC94:9
Stack trace:
#0 /in/VhC94(55): CategoryTree->addCategory('A', NULL)
#1 {main}
thrown in /in/VhC94 on line 9
Process exited with code 255 . Output for 5.5.24 - 5.5.35 , 5.6.8 - 5.6.28 Fatal error: Uncaught exception 'InvalidArgumentException' in /in/VhC94:9
Stack trace:
#0 /in/VhC94(55): CategoryTree->addCategory('A', NULL)
#1 {main}
thrown in /in/VhC94 on line 9
Process exited with code 255 . preferences:dark mode live preview
177.65 ms | 402 KiB | 228 Q