ArrayObject::offsetExists
(PHP 5, PHP 7, PHP 8)
ArrayObject::offsetExists — Returns 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