Send variable to PHP file

Question

In a WordPress post I'm trying to send data to a PHP file stored in the root folder of my website with this code:

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js" type="text/javascript">
console.log('hi');
var cen = document.getElementById("centro").value;
$.ajax({
        url: 'centroUser.php', 
        type: "POST",
        data: { 'cen': cen },
        success: function(data){
            console.log(data);
        }
}); 
</script>

centroUser.php:

<?php
   $uid = $_POST['cen'];
   echo($uid);   
?>

The problem is that I can't get it to work, the variable $uid doesn't get echoed and even the console.log('hi') doesn't get called. I'm new to AJAX so I don't really know what I'm doing wrong, I have tried looking for other answers but I couldn't find something that worked.

Possible duplicate of Script tag with both external source and body — iainn
– iainn, Commented Sep 14, 2018 at 9:11

Leo · Accepted Answer · 2018-09-14 09:14:36Z

3

Your <script> tag has a src and a body.

Try:

<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.3.1/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">

console.log('hi');
var cen = document.getElementById("centro").value;
$.ajax({
        url: 'centroUser.php', 
        type: "POST",
        data: { 'cen': cen },
        success: function(data){
            console.log(data);
        }
}); 
</script>

If the src has a URI value, user agents must ignore the element's contents and retrieve the script via the URI - see here.

edited Sep 14, 2018 at 9:14

answered Sep 14, 2018 at 9:08

Leo

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1 Comment

Elvopresla Over a year ago

Yes, thanks that was the problem, just a stupid error

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