(PHP 5, PHP 7, PHP 8)
ArrayObject::offsetExists — Returns whether the requested index exists
key
The index being checked.
true
if the requested index exists, otherwise false
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)