Format the output of xml to json conversion using php

I have a table in a mySQL database titled 'xs' which holds a column titled 'result', which holds an array of xml values. I have converted this to json using:

public function getResults(){

    $xml_clean = stripslashes(trim($xs->result));
    $xml = simplexml_load_string($xml_clean);

    if(isset($xml->Consumer)){
        $result['consumer_name'] = json_encode($xml->Consumer->ConsumerName);
        $result['consumer_contact_no'] = json_encode($xml->Consumer->ConsumerTelephoneNo);
    }   
    retu $result; 
}

The $xml_clean variable was my attempt at removing special characters but it actually provides no use, the output is the same as without it.

My output from the php view is:

Name: {"0":"Jason Statham"} 
Contact Number: {"0":"'071 555 9875"} 

How may I format the above to look like this:

Name: Jason Statham
Contact Number: 071 555 9875