How do I loop through JSON array

Question

How do I traverse and display the names in the following JSON using CodeIgniter?

<?php if ( ! defined('BASEPATH')) exit('No direct script access allowed');
class Search extends CI_Controller {
 public function index()
 { 
 $json = '[{"name": "John Doe",
 "address": "115 Dell Avenue, Somewhere",
 "tel": "999-3000",
 "occupation" : "Clerk"},
 {"name": "Jane Doe",
 "address": "19 Some Road, Somecity",
 "tel": "332-3449",
 "occupation": "Student"}]';
 for (int $i = 0; $i < $json.length; $i++){
 ???
 }
 //$obj = json_decode($json); 
 //$this->load->view('search_page');
 }
}
/* End of file search.php */
/* Location: ./application/controllers/search.php */

• Josh: $json is not a json object its a string.
• Anthony: +1 so I should use json_decode($json) first?
• Jonathan: Uncomment the line that says json_decode and just loop through the array that it returns. (and this has nothing to do with CodeIgniter)
• Anthony: +1 $arr = json_decode($json, true); ?
• velop: actually your json string represents an array of objects and not an object itself

Answer 1

1) $json is a string you need to decode it first.

$json = json_decode($json);

2) you need to loop through the object and get its members

foreach($json as $obj){
 echo $obj->name;
 .....
}

Answer 2

another example:

 <?php
 //lets make up some data:
 $udata['user'] = "mitch";
 $udata['date'] = "2006-10-19";
 $udata['accnt'] = "EDGERS";
 $udata['data'] = $udata; //array inside
 var_dump($udata); //show what we made
 //lets put that in a file
 $json = file_get_contents('file.json');
 $data = json_decode($json);
 $data[] = $udata;
 file_put_contents('file.json', json_encode($data));
 //lets get our json data
 $json = file_get_contents('file.json');
 $data = json_decode($json);
 foreach ($data as $obj) {
 var_dump($obj->user);
 }