Concatenating repeating fields

HI

I have a collection of articles. Each has several fields created with Types.

For auhtor I have a repeating field because some articles have more than one author.

I have explored the Types PHP API but cannot figure out to concatenate the fields after they have been put into arrays like this:

$fname= types_render_field(“fname”, array(“output”=>”html”));$lname=types_render_field(“lname”,array(“output”=>”html”));

What comes next?

Example:
I am using the fields Fname and LName. They may, e.g have several entries each if there’s more than one author. I want to match up each pair so that the correct Fname is displayed with its corresponding Lname.

Any guidance will be much appreciated. Thanks. (Very useful plugin by the way).

https://wordpress.org/plugins/types/