so basically I'm looking into javascript and jquery because it looks like I could use it in my projects.

Today I tried to get a bit more into it : I have a database filed with articles id, Ean codes, brands and references. What I would like to do is : you type the article number in one input and it fills the 3 others.

I looked around a bit and frankensteined my very first own code. and it works for the most of it. What I can't figure out is how to fill const values with the data from the array I get from my database instead of the arrays I set up myself. I tried several things but yeah I lack the basics so I guess it will be trivial for you guys

Thanks in advance for your help!

 <?php
$sql = "SELECT * FROM prescreen_articles";
$result = mysqli_query($conn, $sql);
while ($articles = mysqli_fetch_array($result)){
 $temp_articles[] = array(
 "narticle" => $articles['article_number'],
 "ean" => $articles['EAN'],
 "brand" => $articles['brand'],
 "ref" => $articles['ref']
 ); 
}
?>
<input name="artible" id="article" type="text">
<input name="ean" id="ean" type="text" disabled>
<input name="brand" id="brand" type="text" disabled>
<input name="ref" id="ref" type="text" disabled>
<script src="https://code.jquery.com/jquery-3.2.1.min.js"></script>
 <script>
 jQuery(document).ready(function() {
 const $main = $('#article');
 const $ean = $('#ean');
 const $brand = $('#brand');
 const $ref = $('#ref');
 var id;
 var array_articles = <?php echo json_encode($temp_article); ?>;
 const values = {
 article: ['2222222', '9999999', '1111111'],
 ean: ['1', '2', '3'],
 brand: ['samsung', 'apple', 'huawei'],
 ref: ['S10', 'xr', 'P30'],
 };
 $main.on('keyup', function () {
 if($main.is(':empty') || $main.lenght < 7){
 ean.value = '';
 brand.value = '';
 ref.value = '';
 }
 if (jQuery.inArray(this.value , values.article) !== -1) {
 id = jQuery.inArray(this.value ,values.article);
 ean.value = values.ean[id];
 brand.value = values.brand[id];
 ref.value = values.ref[id];
 }
 });
 }); 
 </script>