SplObjectStorage::offsetExists

(PHP 5 >= 5.3.0, PHP 7)
Checks whether an object exists in the storage
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.

Returns:

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

Examples:
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() -

doc_php
2016-02-24 16:19:34
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