looping through multiple arrays in JQuery from a multi array JSON response - php

Question

Am I on the wrong path here?
I have a ajax call to upload some files.
I then create a array on the PHP side and send it back as JSON. But im not sure if the JSON format is correct.
Problem is I want to populate a dataTable with the returned JSON data, but I having difficulty reading the data. If its a single file then its fine and it works, but as soon as its more than one file
PHP CODE
$stmt = $db->prepare("SELECT * FROM {$table} WHERE uuid = :id");
$stmt->execute(array(":id" => $id));
$row = $stmt->fetch();
$json = array();
$json[] = $row;
echo json_encode($json);
on the JQuery/AJAX call side
$(document).ready(function() {
$('#myfiles').on("change", function() {
var myfiles = document.getElementById("myfiles");
var files = myfiles.files;
var data = new FormData();
for (i = 0; i < files.length; i++) {
data.append('file' + i, files[i]);
}
$.ajax({
url: './inc/MediaScripts.php',
type: 'POST',
contentType: false,
data: data,
processData: false,
cache: false
}).done(function(html) {
var t = $('#vidlib_dtable').DataTable();
var obj = eval(html);
$.each(obj, function(key,value) {
t.row.add( [
value.name,
value.title,
value.path,
value.duration,
value.uploaded_date,
value.uploaded_by,
value.keyword,
value.comment,
] ).draw();
});
});
});
});
The original return has more columns, hence the above columns in the dataTable add.
The return looks like multiple (singular) JSON arrays.
[{"uuid":"236","name":"Koala.jpg"}]
[{"uuid":"237","name":"Lighthouse.jpg"}]
I was wondering if it should not take the shape of something like this
[{"uuid":"236","name":"Koala.jpg"}, {"uuid":"237","name":"Lighthouse.jpg"}]
If the format that I receive the data in is fine, how do I go about looping trhough the multiple arrays on the JQuery side?

Answer 1

That's because you are echo'ing 3 different JSON object arrays.
Each time your loop iterates you echo, the loop then re-creates the array and echo's the new JSON array.
$json = array();
//forloop{ START
$stmt = $db->prepare("SELECT * FROM {$table} WHERE uuid = :id");
$stmt->execute(array(":id" => $id));
$row = $stmt->fetch();
array_push($json, $row);
//} END
echo json_encode($json);
Initialize your array before the loop, and echo it after it's been fully created.