PHP Australia Conference 2015

SplObjectStorage::offsetExists

(PHP 5 >= 5.3.0)

SplObjectStorage::offsetExistsChecks whether an object exists in the storage

Descrizione

public bool SplObjectStorage::offsetExists ( object $object )

Checks whether an object exists in the storage.

Nota:

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

Elenco dei parametri

object

The object to look for.

Valori restituiti

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

Esempi

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])
?>

Il precedente esempio visualizzerĂ  qualcosa simile a:

bool(true)
bool(false)

Vedere anche:

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