Here start_value and total_value are optional. If both values are not given the full string is returned. Let us start with an example.
The output will be come to www.plus2net.com
Now let us specify the total value and see the output.
The output will be come to
You can see we got the output from the 3rd position till we get required 7 chars.
This article is written by plus2net.com team.