php[world] 2019 — 25 years of PHP

ArrayObject::offsetExists

(PHP 5, PHP 7)

ArrayObject::offsetExistsVérifie si un index existe

Description

public ArrayObject::offsetExists ( mixed $index ) : bool

Liste de paramètres

index

L'index à vérifier.

Valeurs de retour

TRUE if the requested index exists, otherwise FALSE

Exemples

Exemple #1 Exemple avec ArrayObject::offsetExists()

<?php
$arrayobj 
= new ArrayObject(array('zero''one''example'=>'e.g.'));
var_dump($arrayobj->offsetExists(1));
var_dump($arrayobj->offsetExists('example'));
var_dump($arrayobj->offsetExists('notfound'));
?>

L'exemple ci-dessus va afficher :

bool(true)
bool(true)
bool(false)

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User Contributed Notes 1 note

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goran at extensionsforjoomla dot com
12 years ago
In versions prior to PHP 5.2.2 offsetExists() would return false if index value is null.
<?php
// running PHP 5.2.1
$params = new ArrayObject(array('INT'=>null, 'STR'=> null, 'BOOL'=>null, 'LOB'=>null));
$test = $params->offsetExists('INT');
var_dump($test);
// result would be bool(false)
// running PHP 5.2.2
$params = new ArrayObject(array('INT'=>null, 'STR'=> null, 'BOOL'=>null, 'LOB'=>null));
$test = $params->offsetExists('INT');
var_dump($test);
// result would be bool(true)
?>
Both tests where made on Windows platform.
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