php function return json object code example
Example 1: php response json
<?PHP
$data = /** whatever you're serializing **/;
header('Content-Type: application/json');
echo json_encode($data);
Example 2: convert text file to json php
<?php
header('Content-type: application/json');
echo json_encode( explode("\r\n",file_get_contents('data.txt')) );
?>