Question

I never worked with JSON and I really need to do it now, I’ve tried bunch of examples from jQuery page but it does not seem to work for me.

I have *.php file that is generating string, as I understand this is how I pass JSON to javascript from PHP. The string that I want to generate is very simple:

foreach ($imageList as $img)
{
    echo "{ thumb: 'media/img/t/$img', image: 'media/img/m/$img'},";
}

So the result would be something like (formatted)

{
thumb: 'media/img/t/123.jpg',
image: 'media/img/m/123.jpg'
},
{
thumb: 'media/img/t/1234.jpg',
image: 'media/img/m/1234.jpg'
},

and so on…

Somehow I think this is not the correct way of doing things, excuse me of course, but as I told I never worked with JSON format and I barely know what it even stands for.

I want this data to be located in javascript array so I can use it in my gallery like here (3. Using JSON) http://galleria.aino.se/docs/1.2/references/data/

Can someone help me with this one? I know that it is probably very easy problem, but for me as a total noob it is hard to understand. When I do know how to solve this I will probably understand how it works and how to use it, but now I really have no clue.

Answer 1

I suggest you use json_encode() as you have several issues in your created json object string.

<?php

$json_image_list = array();
foreach ($imageList as $img){
    $json_image_list[] = array(
        'thumb' => "media/img/t/$img",
        'image' => "media/img/m/$img",
    );
}

echo json_encode($json_image_list);

?>

So you know, here are a few problems in your json:

1. An array has to be in brackets (‘[‘ & ‘]’).
2. Your object properties must be wrapped in double quotes.

Also, see the bottom of JSON.org for packages that are already written for the languages you’ll be using on the web so you don’t have to write your own.