Return mysql records in json format - PHP

Use the above function to select data from mysql table and return them as json. when used with ajax, u can use the json object to parse, display and process.

<?php
$qry = "select id, name, address from cust ";
$ret = mysql_query("$qry",$link);
$xx = mysql_fetch_all($ret);
if($xx)
echo json_encode($xx);

?>