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<?php class Connection { public function query() { return new Result(); } } class Result implements \IteratorAggregate { private $rows; public function __construct() { $this->rows = new \ArrayObject([ [0, 1, 2], [3, 4, 5], [6, 7, 8], ]); } public function getIterator() { return $this->rows->getIterator(); } } $conn = new Connection(); // Here $result holds an instance of "Result" // *** THIS IS YOUR CASE 2 *** $result = $conn->query(); var_dump($result); // "Result" is iterable, so we can do like this foreach($result as $row) { var_dump($row); } // Or we can skip the intermediate variable and loop over the result immediately. // *** THIS IS YOUR CASE 1 *** foreach($conn->query() as $row) { var_dump($row); }
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Return type of Result::getIterator() should either be compatible with IteratorAggregate::getIterator(): Traversable, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /in/8ekfh on line 24 object(Result)#2 (1) { ["rows":"Result":private]=> object(ArrayObject)#3 (1) { ["storage":"ArrayObject":private]=> array(3) { [0]=> array(3) { [0]=> int(0) [1]=> int(1) [2]=> int(2) } [1]=> array(3) { [0]=> int(3) [1]=> int(4) [2]=> int(5) } [2]=> array(3) { [0]=> int(6) [1]=> int(7) [2]=> int(8) } } } } array(3) { [0]=> int(0) [1]=> int(1) [2]=> int(2) } array(3) { [0]=> int(3) [1]=> int(4) [2]=> int(5) } array(3) { [0]=> int(6) [1]=> int(7) [2]=> int(8) } array(3) { [0]=> int(0) [1]=> int(1) [2]=> int(2) } array(3) { [0]=> int(3) [1]=> int(4) [2]=> int(5) } array(3) { [0]=> int(6) [1]=> int(7) [2]=> int(8) }

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