ArrayObject
PHP Manual

ArrayObject::offsetExists

(PHP 5 >= 5.0.0)

ArrayObject::offsetExistsReturns whether the requested index exists

Descrizione

public bool ArrayObject::offsetExists ( mixed $index )

Elenco dei parametri

index

The index being checked.

Valori restituiti

TRUE if the requested index exists, otherwise FALSE

Esempi

Example #1 ArrayObject::offsetExists() example

<?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'));
?>

Il precedente esempio visualizzerĂ :

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


ArrayObject
PHP Manual