In elastic search I am using `sort` to sort by first line of address. However where the address begins with a number it is sorted as:

```
1 Some Street
10 Some Street
12 Some Street
2 Some Street
22 Some Street
24 Some Street

```

I would prefer to order it as 1, 2, 10, 12, 22, 24 etc.

Sort code below in php:

```
$params['sort'] = array('line_1:asc');

```