SplObjectStorage
PHP Manual

SplObjectStorage::offsetExists

Checks whether an object exists in the storage

Description

public bool SplObjectStorage::offsetExists ( object $object )

Checks whether an object exists in the storage.

Note:

SplObjectStorage::offsetExists is an alias of SplObjectStorage::contains.

Parameters

object

The object to look for.

Return Values

Returns TRUE if the object exists in the storage, and FALSE otherwise.

Examples

Example #1 SplObjectStorage::offsetExists example

<?php
$s = new SplObjectStorage;
$o1 = new StdClass;
$o2 = new StdClass;

$s->attach($o1);

var_dump($s->offsetExists($o1)); // Similar to isset($s[$o1])
var_dump($s->offsetExists($o2)); // Similar to isset($s[$o2])
?>

The above example will output something similar to:

bool(true)
bool(false)

See Also

  • SplObjectStorage::offsetSet
  • SplObjectStorage::offsetGet
  • SplObjectStorage::offsetUnset