Creating a JSON Array?

Question

I'm trying create a JSON Array using PHP. But I want this JSON receive a master key like this: cidades:[{"id":"1", "nome":"Guaira"}] and when I try create its only create [{"id":"1","cidade":"Guaira"}].

How can I do it ?

<?php
include '../objetos/Cidade.php';
include '../dao/CidadeDAO.php';

if($_GET['action'] == 'getCidades'){
    $idEstado = $_GET['idEstado'];  

    $dao = new CidadeDAO();
    $lista = $dao->getCidadeByEstado($idEstado);


    $arr = array();
    foreach ($lista as $object){
        $result = array("id" => $object['id'], "cidade" => $object['cidade']);
        array_push($arr, $result);
    }   

    echo json_encode($arr);

//output: [{"id":"1","cidade":"Guaira"},{"id":"1","cidade":"Barretos"}] }

?>

change $result with $result["cidades"][]

Nadeem Khan
– Nadeem Khan

2015-02-18 13:21:30 +00:00
Commented Feb 18, 2015 at 13:21 — Nadeem Khan
– Nadeem Khan, Commented Feb 18, 2015 at 13:21

Robin Graillon · Accepted Answer · 2015-02-18 13:29:06Z

2

Create a top-level array with key 'cidades' and put your data into :

$arr = array('cidades' => array());
foreach ($lista as $object){
    $result = array("id" => $object['id'], "cidade" => $object['cidade']);
    array_push($arr['cidades'], $result);
}

answered Feb 18, 2015 at 13:29

Robin Graillon

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Comments

halfer · Accepted Answer · 2015-02-18 14:16:44Z

1

Try this:

$arr["cidades"] = array();
array_push($arr["cidades"], $result);

This code produces a JSON formatted data with a key named "cidades" attached to it so that something like cidades:[{"id":"1", "nome":"Guaira"}] is produced. For clarity check out this.

edited Feb 18, 2015 at 14:16

halfer

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answered Feb 18, 2015 at 13:25

Molluska

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4 Comments

Jay Blanchard Over a year ago

Why should the OP "try this"? Please explain to the OP (and future visitors to SO) why you did what you did.

Molluska Over a year ago

The code is simple...it produces a Json formatted data with a key named "cidades" attached to it so that something like cidades:[{"id":"1", "nome":"Guaira"}] is produced. For clarity check out androidhive.info/2012/05/how-to-connect-android-with-php-mysql

Molluska Over a year ago

Thanks I am just a newbie...didn't know

halfer Over a year ago

Please don't recommend Android Hive; that tutorial (and several others on the same site) contain serious SQL injection vulnerabilities. See more here.

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