Xpressengine\Support\Caster::castFloat PHP Method

To float cast a value

protected static castFloat ( mixed $v ) : float \| null
$v	mixed	original value
return	float \| null

    protected static function castFloat($v)
    {
        return !preg_match('/[^0-9\\.]/', $v) ? (double) $v : null;
    }

Caster