(PHP 5 >= 5.1.0, PHP 7, PHP 8)
SplObjectStorage::key — Returns the index at which the iterator currently is
Returns the index at which the iterator currently is.
Questa funzione non contiene parametri.
The index corresponding to the position of the iterator.
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) {
}