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Yaf_Session::next	Yaf_Session::offsetGet

Yaf_Session	Last updated: Mon, 26 Oct 2026

Yaf_Session::offsetExists

(Yaf >=1.0.0)

Yaf_Session::offsetExists — Check if a session key exists (ArrayAccess)

Description

public function Yaf_Session::offsetExists(mixed $name): bool

Checks whether a session key exists. This method is an alias of Yaf_Session::has() and is called when isset() is used with array syntax.

Parameters

name: The session key to check.

Return Values

Returns true if the key exists, false otherwise.

Examples

Example #1 Yaf_Session::offsetExists() example

<?php
$session = Yaf_Session::getInstance();
$session->start();

$session["user_id"] = 42;

var_dump(isset($session["user_id"]));
var_dump(isset($session["user_name"]));
?>

The above example will output something similar to:

bool(true)
bool(false)

See Also

Yaf_Session::has() - Check if a session key exists
Yaf_Session::offsetGet() - Get a session value (ArrayAccess)

Yaf_Session::next	Yaf_Session::offsetGet

Yaf_Session	Last updated: Mon, 26 Oct 2026