PHP function return multiple JSON object - php

Question

I have a php function that currently looks like this
function renderJson(PageArray $items) {
$myData = array();
$myData['title'] = [];
$myData['url'] = [];
// cycle through all the items
foreach($items as $item) {
array_push($myData["title"],$item->title);
array_push($myData["url"],$item->url);
}
return json_encode($myData);
}
It currently works in this shape as output
{"title":["A","B"],"url":["A","B"]}
But this is what I am trying to achieve
{"title":["A"],"url":["A"]},{"title":["B"],"url":["B"]}
I am trying to return it as a JSON encode.The $item->title and $item->url returns a string.Any help would be great.

Answer 1

So now you get this :
{"title":["A","B"],"url":["A","B"]}
But you want this :
{"title":["A"],"url":["A"]},{"title":["B"],"url":["B"]}
What you want is add a new "item" each time you loop and each item have a title and an url. Right now you return an array that contain 2 sub-array : one for the title, one for the url.
Try this way :
function renderJson(PageArray $items) {
// Your result array
$myData = array();
// cycle through all the items
foreach($items as $item) {
// Each time you loop, you add a new array in your main array with a title and an URL
$myData[] = array(
"title" => $item->title,
"url" => $item->url
);
}
return json_encode($myData);
}
I used [] because he does what you need : push element at the end of your main array. It's the short way to use array_push(). Here is the documentation for more details : http://php.net/manual/en/function.array-push.php
The output will be :
[{"title":["A"],"url":["A"]},{"title":["B"],"url":["B"]}]

Answer 2

What you want to return is not, of course, valid json. At this point return an array containing those two objects (i.e., push the whole $item to $myData)
function renderJson(PageArray $items) {
$myData = array();
// cycle through all the items
foreach($items as $item) {
array_push($myData,['title' => $item->title, 'url' => $item->url]);
}
return json_encode($myData);
}
which gives you something in the form of
[{"title":"A","url":"A"},{"title":"B","url":"B"}]

Answer 3

You create invalid JSON by concatenation your JSON by comma. Either get your client (speak receiver of the json data) to split the result by comma and then parsing each JSON by its own.
Otherwise you could create a "big" JSON string, containing both (or all if there are more) of your JSON data.
Just create an array in PHP, add a new element for each JSON data, then json_encode() it and go over it by a loop in your client.
What you will use in the end, doesnt really matter that much, but I would use the second approach by a lot over the first, since it´s much cleaner.