Format the json encode just like on laravel php - php

Question

Supposed I have a query that gets the image from a certain tweet
[
{
"pic": "/upload/15680712995mb.jpg",
"tweet_id": "48"
},
{
"pic": "/upload/1568071299test.PNG",
"tweet_id": "48"
},
{
"pic": "/upload/1568015310test.PNG",
"tweet_id": "47"
}
]
And I have a result also from a query that gets all of the tweet
[
{
"id": "48",
"tweet": "test",
},
{
"id": "47",
"tweet": "test tweet",
},
{
"id": "45",
"tweet": "test tweet 3",
}
]
How can I format the result like this (Just like on laravel)
[
{
"id": "48",
"tweet": "test",
"pics": [
[
"/upload/15680712995mb.jpg"
],
[
"/upload/1568071299test.PNG"
],
]
},
{
"id": "47",
"tweet": "test tweet",
"pics" : [
[
"/upload/1568015310test.PNG"
]
]
},
{
"id": "45",
"tweet": "test tweet 3",
"pics" : []
}
]
And this is my simplified code
public function getTweets()
{
$pics = $this->model->getPics();
$aTweets = $this->model->getTweets();
$map = [];
$props = [];
foreach ($aTweets as $sTweet) {
$map['id'] = $sTweet['id'];
$map['tweet'] = $sTweet['tweet'];
foreach ($pics as $pic) {
if ($pic['id'] === $sTweet['tweet_id']) {
$map['pics'] = [$pic['pic']];
}
}
$props[] = $map;
}
return $props;
}
but it just gives me the following output
{
"id": "48",
"tweet": "test",
"pics": [
"/upload/1568015310test.PNG"
]
},
{
"id": "47",
"tweet": "test tweet",
"pics": [
"/upload/1568015310test.PNG"
]
},
Any idea how can I format the result. thanks in advance.?

Answer 1

I'm not sure what's troubling you but in order to add multiple values inside, just put another nesting like what I've eluded in the comments section:
$map['pics'][] = $pic['pic'];
// ^
So to complete the answer:
$map = [];
$props = [];
foreach ($aTweets as $sTweet) {
$map['id'] = $sTweet['id'];
$map['tweet'] = $sTweet['tweet'];
$map['pics'] = []; // initialize
foreach ($pics as $pic) {
if ($pic['tweet_id'] === $sTweet['id']) {
$map['pics'][] = [$pic['pic']];
}
}
$props[] = $map;
}
This essentially creates another dimension for pics index as an array and continually pushing, provided they have the same ID.
Sidenote: tweet_id is to pics and id is to aTweets. Your's have the other way around.