PHP program to demonstrate the json_encode() function with indexed array of strings

<?php
//PHP program to demonstrate the json_encode() 
//function with indexed array of strings.
$Countries = array(
    "INDIA",
    "AUSTRALIA",
    "USA",
    "RUSSIA"
);
$jsonStr = json_encode($Countries);
printf("Result: %s<br>", $jsonStr);
?>

Output
Result: ["INDIA","AUSTRALIA","USA","RUSSIA"]