ArrayObject::offsetExists

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ArrayObject::offsetExists

(PHP 5, PHP 7, PHP 8)

ArrayObject::offsetExistsReturns whether the requested index exists


Description

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

Parameters

key
The index being checked.


Return Values

true if the requested index exists, otherwise false


Examples

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'));
?>

The above example will output:


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

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https://www.php.net/manual/en/arrayobject.offsetexists.php