(PHP 5 >= 5.3.0)
SplObjectStorage::offsetExists — Checks whether an object exists in the storage
Checks whether an object exists in the storage.
Returns TRUE if the object exists in the storage, and FALSE otherwise.
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)