SplObjectStorage::key
(PHP 5 >= 5.1.0, PHP 7, PHP 8)
SplObjectStorage::key — Returns the index at which the iterator currently is
Descrizione
Returns the index at which the iterator currently is.
Elenco dei parametri
Questa funzione non contiene parametri.
Valori restituiti
The index corresponding to the position of the iterator.
Esempi
Example #1 SplObjectStorage::key() example
<?php
$s = new SplObjectStorage();
$o1 = new stdClass;
$o2 = new stdClass;
$s->attach($o1, "d1");
$s->attach($o2, "d2");
$s->rewind();
while($s->valid()) {
$index = $s->key();
$object = $s->current(); // similar to current($s)
var_dump($index);
var_dump($object);
$s->next();
}
?>Il precedente esempio visualizzerà qualcosa simile a:
int(0)
object(stdClass)#2 (0) {
}
int(1)
object(stdClass)#3 (0) {
}
Vedere anche:
- SplObjectStorage::rewind() - Rewind the iterator to the first storage element
- SplObjectStorage::current() - Returns the current storage entry
- SplObjectStorage::next() - Move to the next entry
- SplObjectStorage::valid() - Returns if the current iterator entry is valid
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