RecursiveArrayIterator::getChildrens returns a copy of the children, not a reference:
<?php
$stack = array ("some" => "value",
array ("subsome" => "subvalue", array ("subsubsome" => "subsubvalue")),
"some1" => "value1");
$object = new RecursiveArrayIterator ($stack);
$object->next ();
$second_object = &$object->getChildren ();
$second_object->next ();
$third_object = &$second_object->getChildren ();
$third_object->offsetSet ("subsubsome", "subsubdiferent");
var_dump ($object);
var_dump ($second_object);
var_dump ($third_object);
?>
returns:
object(RecursiveArrayIterator)#1 (1) {
["storage":"ArrayIterator":private]=>
array(3) {
["some"]=>
string(5) "value"
[0]=>
array(2) {
["subsome"]=>
string(8) "subvalue"
[0]=>
array(1) {
["subsubsome"]=>
string(11) "subsubvalue" <--- expected to be changed
}
}
["some1"]=>
string(6) "value1"
}
}
object(RecursiveArrayIterator)#2 (1) {
["storage":"ArrayIterator":private]=>
array(2) {
["subsome"]=>
string(8) "subvalue"
[0]=>
array(1) {
["subsubsome"]=>
string(11) "subsubvalue" <--- expected to be changed
}
}
}
object(RecursiveArrayIterator)#3 (1) {
["storage":"ArrayIterator":private]=>
array(1) {
["subsubsome"]=>
string(14) "subsubdiferent"
}
}
RecursiveArrayIterator::getChildren
(PHP 5 >= 5.1.0, PHP 7, PHP 8)
RecursiveArrayIterator::getChildren — Returns an iterator for the current entry if it is an array or an object
Descrizione
Returns an iterator for the current iterator entry.
Elenco dei parametri
Questa funzione non contiene parametri.
Valori restituiti
An iterator for the current entry, if it is an array or object; or null on failure.
Errori/Eccezioni
An InvalidArgumentException will be thrown if the current entry does not contain an array or an object.
Esempi
Example #1 RecursiveArrayIterator::getChildren() example
<?php
$fruits = array("a" => "lemon", "b" => "orange", array("a" => "apple", "p" => "pear"));
$iterator = new RecursiveArrayIterator($fruits);
while ($iterator->valid()) {
if ($iterator->hasChildren()) {
// print all children
foreach ($iterator->getChildren() as $key => $value) {
echo $key . ' : ' . $value . "\n";
}
} else {
echo "No children.\n";
}
$iterator->next();
}
?>Il precedente esempio visualizzerà:
No children. No children. a : apple p : pear
Vedere anche:
- RecursiveArrayIterator::hasChildren() - Returns whether current entry is an array or an object
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User Contributed Notes 1 note
814ckf0x ¶
10 years ago
