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<?php class Node implements Countable { private $nodes = []; public function __construct(array $nodes = []) { $this->nodes = $nodes; } public function getCount() { return count($this->nodes); } public function getCountRecursive() { $count = 0; foreach ($this->nodes as $node) { $count += ($node->getCountRecursive() + 1); } return $count; } public function count($mode = COUNT_NORMAL){ if ($mode === COUNT_RECURSIVE) { return $this->getCountRecursive(); } return $this->getCount(); } } $node = new Node([ new Node([ new Node([ new Node([ new Node(), new Node(), new Node(), ]), new Node(), new Node(), ]), new Node(), new Node(), ]), new Node(), ]); var_dump(count($node), count($node, COUNT_RECURSIVE));
Output for 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
Deprecated: Return type of Node::count($mode =  COUNT_NORMAL) should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/NDfOA on line 23 Fatal error: Uncaught Error: Undefined constant " COUNT_NORMAL" in /in/NDfOA:23 Stack trace: #0 /in/NDfOA(48): Node->count() #1 {main} thrown in /in/NDfOA on line 23
Process exited with code 255.
Output for 8.0.0 - 8.0.30
Fatal error: Uncaught Error: Undefined constant " COUNT_NORMAL" in /in/NDfOA:23 Stack trace: #0 /in/NDfOA(48): Node->count() #1 {main} thrown in /in/NDfOA on line 23
Process exited with code 255.
Output for 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33
Warning: Use of undefined constant  COUNT_NORMAL - assumed ' COUNT_NORMAL' (this will throw an Error in a future version of PHP) in /in/NDfOA on line 23 Warning: Use of undefined constant  COUNT_NORMAL - assumed ' COUNT_NORMAL' (this will throw an Error in a future version of PHP) in /in/NDfOA on line 23 int(2) int(2)
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.20
Notice: Use of undefined constant  COUNT_NORMAL - assumed ' COUNT_NORMAL' in /in/NDfOA on line 23 Notice: Use of undefined constant  COUNT_NORMAL - assumed ' COUNT_NORMAL' in /in/NDfOA on line 23 int(2) int(2)
Output for 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/NDfOA on line 5
Process exited with code 255.
Output for 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/NDfOA on line 5
Process exited with code 255.
Output for 4.4.2 - 4.4.9
Parse error: syntax error, unexpected T_STRING, expecting '{' in /in/NDfOA on line 3
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
Parse error: parse error, unexpected T_STRING, expecting '{' in /in/NDfOA on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error, expecting `'{'' in /in/NDfOA on line 3
Process exited with code 255.
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