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(PHP 5, PHP 7, PHP 8)
ArrayObject::offsetExists — Returns whether the requested index exists
keyThe index being checked.
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 visualizzerà:
bool(true) bool(true) bool(false)
