$arrayObj = new ArrayObject(['apple', 'banana', 'cherry']);
$iterator = $arrayObj->getIterator();
foreach ($iterator as $fruit) {
echo $fruit . "\n";
}
$arrayObj = new ArrayObject(['apple', 'banana', 'cherry']);
$iterator = $arrayObj->getIterator();
$filteredIterator = new CallbackFilterIterator($iterator, function($fruit) {
return strpos($fruit, 'a') !== false;
});
foreach ($filteredIterator as $fruit) {
echo $fruit . "\n";
}
This code creates an ArrayObject with three fruits and then uses the getIterator method to retrieve an iterator. The code then creates a CallbackFilterIterator using the iterator and a callback function that filters out any fruits that do not contain the letter "a". The foreach loop then iterates over the filtered iterator and prints each fruit on a new line.
The ArrayObject class is part of the PHP core language, so it does not require any external package libraries. protected function _get_result()
{
$rows = array();
while ($res = $this->_cws->get_result()) {
foreach ($res as $key => $val) {
$rows[] = $val;
}
}
$obj = new arrayObject($rows);
$this->_resObj = $obj->getIterator();
}
