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ArrayObject::offsetGet> <ArrayObject::natsort
[edit] Last updated: Fri, 24 May 2013

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ArrayObject::offsetExists

(PHP 5 >= 5.0.0)

ArrayObject::offsetExistsDevuelve si el índice solicitado existe

Descripción

public bool ArrayObject::offsetExists ( mixed $index )

Parámetros

index

El índice a ser comprobado.

Valores devueltos

TRUE si el índice solicitado existe, en caso contrario FALSE

Ejemplos

Ejemplo #1 Ejemplo de ArrayObject::offsetExists()

<?php
$arrayobj 
= new ArrayObject(array('cero''uno''ejemplo'=>'e.j.'));
var_dump($arrayobj->offsetExists(1));
var_dump($arrayobj->offsetExists('ejemplo'));
var_dump($arrayobj->offsetExists('noencontrado'));
?>

El resultado del ejemplo sería:

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



add a note add a note User Contributed Notes ArrayObject::offsetExists - [1 notes]
up
0
goran at extensionsforjoomla dot com
5 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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