Contao\Cache::__isset PHP Method

Check whether a key is set

Deprecation: Deprecated since Contao 4.0, to be removed in Contao 5.0. Use Cache::has() instead.

public __isset ( string $strKey ) : boolean
$strKey	string	The cache key
return	boolean	True if the key is set

    public function __isset($strKey)
    {
        return static::has($strKey);
    }

Cache