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SplObjectStorage::key

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

SplObjectStorage::keyReturns the index at which the iterator currently is

Description

public SplObjectStorage::key(): int

Returns the index at which the iterator currently is.

Parameters

This function has no parameters.

Return Values

The index corresponding to the position of the iterator.

Examples

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();
}
?>

The above example will output something similar to:

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

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