--TEST-- PDO Common: PDOStatement SPL iterator --SKIPIF-- --FILE-- exec('CREATE TABLE test(id int NOT NULL PRIMARY KEY, val VARCHAR(10), grp VARCHAR(10))'); $db->exec('INSERT INTO test VALUES(1, \'A\', \'Group1\')'); $db->exec('INSERT INTO test VALUES(2, \'B\', \'Group2\')'); $SELECT = 'SELECT val, grp FROM test'; class Test { function __construct($name = 'N/A') { echo __METHOD__ . "($name)\n"; } } $stmt = $db->query($SELECT, PDO::FETCH_CLASS, 'Test', array('WOW')); $it = new IteratorIterator($stmt); /* check if we can convert that thing */ /*** HINT: If YOU plan to do so remember not to call rewind() -> see below ***/ foreach($it as $data) { var_dump($data); } $it->next(); /* must be allowed */ var_dump($it->current()); /* must return NULL */ var_dump($it->valid()); /* must return false */ class PDOStatementAggregate extends PDOStatement implements IteratorAggregate { private function __construct() { echo __METHOD__ . "\n"; $this->setFetchMode(PDO::FETCH_NUM); /* default fetch mode is BOTH, so we see if the ctor can overwrite that */ } function getIterator() { echo __METHOD__ . "\n"; $this->execute(); return new IteratorIterator($this, 'PDOStatement'); } } $stmt = $db->prepare($SELECT, array(PDO::ATTR_STATEMENT_CLASS=>array('PDOStatementAggregate'))); foreach($stmt as $data) { var_dump($data); } ?> --EXPECTF-- Test::__construct(WOW) object(Test)#4 (2) { ["val"]=> string(1) "A" ["grp"]=> string(6) "Group1" } Test::__construct(WOW) object(Test)#6 (2) { ["val"]=> string(1) "B" ["grp"]=> string(6) "Group2" } NULL bool(false) PDOStatementAggregate::__construct PDOStatementAggregate::getIterator array(2) { [0]=> string(1) "A" [1]=> string(6) "Group1" } array(2) { [0]=> string(1) "B" [1]=> string(6) "Group2" }