SplObjectStorage::offsetExists

(PHP 5 >= 5.3.0)

SplObjectStorage::offsetExists — Checks whether an object exists in the storage

설명

public bool SplObjectStorage::offsetExists ( object $object )

Checks whether an object exists in the storage.

Note:
SplObjectStorage::offsetExists() is an alias of SplObjectStorage::contains().

인수

object: The object to look for.

반환값

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

예제

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])
?>

위 예제의 출력 예시:

bool(true)
bool(false)

참고

SplObjectStorage::offsetSet() - Associates data to an object in the storage
SplObjectStorage::offsetGet() - Returns the data associated with an object
SplObjectStorage::offsetUnset() - Removes an object from the storage