I'm not sure exactly what you're demonstrating in your code, maybe it's just some typos, is the "$output" the name of the variable, or part of the string?
Assuming it's the name of the variable, and you just forgot to put the quotes on the string, you have a couple options:
$sliced = explode('&', $output)
This will create an array with values: "Country=UNITED STATES(US) ", "City=Scottsdale, AZ ", etc.
$sliced = preg_split('/[&=]/', $output);
This will create an array with alternating elements being the "variables" and their values: "Country", "UNITED STATES(US) ", "City", "Scottsdale, AZ ", etc.