Help, Im working on the authorize.net api and need some help. There is a way to get the resppnce codes from using explode() but i dont know how. The code is below:

PHP Code:
// This line takes the response and breaks it into an array using the specified delimiting character

$response_array explode($post_values["x_delim_char"],$post_response);




// The results are output to the screen in the form of an html numbered list.

echo "<OL>\n";

foreach (
$response_array as $value)

{

    echo 
"<LI>" $value "&nbsp;</LI>\n";

    
$i++;

}

echo 
"</OL>\n"
After that part is then says:

// individual elements of the array could be accessed to read certain response

// fields. For example, response_array[0] would return the Response Code,

// response_array[2] would return the Response Reason Code.

// for a list of response fields, please review the AIM Implementation Guide

So how do I get the response_array[0] so I can echo it? Thanks