$array = array('1' => array('2' => array('3' => 'value')));
$value = Arrays::hasNestedKey($array, array('1', '2', '3'));
Result:
true
Example with null values:
$array = array('1' => array('2' => array('3' => null)));
$value = Arrays::hasNestedKey($array, array('1', '2', '3'), Arrays::TREAT_NULL_AS_VALUE);
Result:
true
public static function hasNestedKey(array $array, array $keys, $flags = null)
{
foreach ($keys as $key) {
if (!array_key_exists($key, $array) || !($flags & self::TREAT_NULL_AS_VALUE) && !isset($array[$key])) {
return false;
}
$array = self::getValue($array, $key);
}
return true;
} public function has($keys)
{
return Arrays::hasNestedKey($_SESSION, Arrays::toArray($keys));
}
