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)