SplObjectStorage::getInfo
SplObjectStorage::next
SplObjectStorage
PHP Manual

# SplObjectStorage::key

(PHP 5 >= 5.1.0)

SplObjectStorage::key — Returns the index at which the iterator currently is

### Descrição

public int SplObjectStorage::key ( void )

Returns the index at which the iterator currently is.

### Parâmetros

Esta função não possui parâmetros.

### Valor Retornado

The index corresponding to the position of the iterator.

### Exemplos

Exemplo #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();
}
?>`

O exemplo acima irá imprimir algo similar à:

    int(0)
    object(stdClass)#2 (0) {
    }
    int(1)
    object(stdClass)#3 (0) {
    }

### Veja Também

- 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

SplObjectStorage::getInfo
SplObjectStorage::next
SplObjectStorage
PHP Manual