Boolean submitted as string to get_bool_from_string()

[robsonsobral]

I'm no PHP expert!

Shouldn't "true" and "false" be added to get_bool_from_string()?

function get_bool_from_string($value)
{
    if (is_bool($value) || is_null($value)) {
        return $value;
    }

    switch (strtolower($value)) {
        case 'true': // here
        case 'yes':
        case 'y':
        case 'on':
        case '1':
            return true;

        break;

        case 'false': // and here
        case 'no':
        case 'n':
        case 'off':
        case '0':
            return false;

        break;

        default:
            return null;

        break;
    }
}

I'm thinking on the case of a boolean being submitted as string.