hasChildren() works as documented here, but not as its name suggests.
The method does not return whether the current entry actually *has* children. It only returns whether the element's type is one that is able to have children.
This is a bit counterintuitive if you are processing empty arrays.
Example:
<?php
$data = array(
"element one" => array(true),
"element two" => array(),
"element three" => array(true),
);
$i = new RecursiveIteratorIterator(new RecursiveArrayIterator($data),RecursiveIteratorIterator::SELF_FIRST);
foreach($i as $key => $value)
{
$type = gettype($value);
$depth = $i->getDepth();
if($i->hasChildren()) {
echo "$depth: $key ($type) has children\n";
} else {
echo "$depth: $key ($type) has no children\n";
}
}
?>
Result:
0: element one (array) has children
1: 0 (boolean) has no children
0: element two (array) has children
0: element three (array) has children
1: 0 (boolean) has no children
RecursiveArrayIterator::hasChildren
(PHP 5 >= 5.1.0, PHP 7, PHP 8)
RecursiveArrayIterator::hasChildren — Vérifie si l'entrée courante est un tableau ou un objet
Description
public RecursiveArrayIterator::hasChildren(): bool
Vérifie si l'entrée courante est un tableau ou un objet pour lequel un itérateur peut être obtenu via la méthode RecursiveArrayIterator::getChildren().
Liste de paramètres
Cette fonction ne contient aucun paramètre.
Exemples
Exemple #1 Exemple avec RecursiveArrayIterator::hasChildren()
<?php
$fruits = array("a" => "lemon", "b" => "orange", array("a" => "apple", "p" => "pear"));
$iterator = new RecursiveArrayIterator($fruits);
while ($iterator->valid()) {
// Vérifie s'il y a des fils
if ($iterator->hasChildren()) {
// Affiche tous les fils
foreach ($iterator->getChildren() as $key => $value) {
echo $key . ' : ' . $value . "\n";
}
} else {
echo "Aucun fils.\n";
}
$iterator->next();
}
?>
L'exemple ci-dessus va afficher :
Aucun fils. Aucun fils. a : apple p : pear
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User Contributed Notes 1 note
Dominik ¶
9 years ago
