I am new to PHP and Wordpress. I am trying to build a custom API on Wordpress. I have a My Sql query that uses INNER JOIN to join 2 tables and returns multiple rows for same item Id. I am then trying to convert the result set into a JSON response.
The problem is i am getting a new JSON object for each item Id even if the Ids are same.
Please see the My SQL query below:
SELECT id, title, answer from wp_tb1 wp1 INNER JOIN wp_tb2 wp2 ON wp1.belongs_id = wp2.id
Php code:
$data=array();
$count=0;
foreach($list as $l){
$data[$count]=array(
"id" =>$l->id,
"title"=>$l->title,
"answer"=> array($l->title),
);
++$count;
}
JSON result looks like:
"[{"id":"1","title":"Title 1","answer":"True"},{"id":"1","title":"Title 1","answer":"False"}]"
As you can see, the id value is repeating and so is Title. I want the response to be something like
"[{"id":"1","title":"Title 1","answer":{"True","False"}}]"
Any help with the query or at the Php code level will be useful.
Change your loop to this:
$data = [];
foreach ($list as $l) {
$data[$l->id]['id'] = $l->id;
$data[$l->id]['title'] = $l->title;
$data[$l->id]['answer'][] = $l->answer;
}
$data = array_values($data);
This will group the nested array by id
and title
(I'm assuming that title is the same for the same id).
$data
would now contain
[{"id":"1","title":"Title 1","answer":["True","False"]}]
See demo