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SplObjectStorage::offsetSet	SplObjectStorage::removeAll

SplObjectStorage	Last updated: Mon, 26 Oct 2026

SplObjectStorage::offsetUnset

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

SplObjectStorage::offsetUnset — Removes an object from the storage

Description

public function SplObjectStorage::offsetUnset(object $object): void

Removes an object from the storage.

Note:
SplObjectStorage::offsetUnset() is an alias of SplObjectStorage::detach().

Parameters

object: The object to remove.

Return Values

No value is returned.

Examples

Example #1 SplObjectStorage::offsetUnset() example

<?php
$o = new stdClass;
$s = new SplObjectStorage();
$s->attach($o);
var_dump(count($s));
$s->offsetUnset($o); // Similar to unset($s[$o])
var_dump(count($s));
?>

The above example will output something similar to:

int(1)
int(0)

See Also

SplObjectStorage::offsetGet() - Returns the data associated with an object
SplObjectStorage::offsetSet() - Associates data to an object in the storage
SplObjectStorage::offsetExists() - Checks whether an object exists in the storage

SplObjectStorage::offsetSet	SplObjectStorage::removeAll

SplObjectStorage	Last updated: Mon, 26 Oct 2026