Updating HTML from PHP function

Question

I am having problems updating a SPAN in my HTML with the result from a PHP file. In the HTML below the is a link that calls the php file that will update the SPAN above it with the new value.

HTML

        <div class="link-votes">
            <span id="v<?php echo $link_id; ?>"><?php echo $votes; ?></span>
        </div>
        <a href="#" class="vote" id="<?php echo $link_id; ?>" name="up" title="Up vote"></a>

PHP

if($_POST['id']) {
    $up_value=$row['vote_count'];
    $("#v"+id).html(html) = $up_value;
}

If I echo $up_value the right integer is printed. But I cannot update the value in the SPAN.\

Thanks,

You're mixing PHP and Javascript code. How you could ever get that to run is beyond me... your PHP snippet is utterly invalid. — Marc B
– Marc B, Commented Jun 26, 2012 at 3:53
In the PHP section it looks like you're trying to do jQuery from PHP (server side versus client side). On the client side using jQuery you likely want to perform an AJAX callback to a PHP endpoint that responds JSON as an example, where the client side jQuery then would parse the JSON and make the appropriate dom changes. — Kevin Reilly
– Kevin Reilly, Commented Jun 26, 2012 at 3:53

heapoverflow · Accepted Answer · 2012-06-26 04:00:01Z

3

You are mixing Javascript code with PHP code. You are using the html() function which looks like it might be from the JQuery library. You might want to echo() in PHP and then use Javascript to work on the return value of that echo() statement. It should work as the echo() will be done before the Javascript takes effect, as is the required flow of execution.

answered Jun 26, 2012 at 4:00

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1 Comment

WhyNotHugo Over a year ago

Alternately, he might want to do a bit of reading on what jQuery and PHP are, and how the both work before starting to paste mixed up code together.

Danconia · Accepted Answer · 2012-06-26 06:56:08Z

1

Thanks all, your advice helped me figure it out. What I did for other newbies reference was

echo $up_value;

at the end of the php file and then in my jquery:

success: function(html) {$("#v"+id).html(html);}

answered Jun 26, 2012 at 6:56

Danconia

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Comments

we.mamat · Accepted Answer · 2012-06-26 09:08:48Z

1

as the comments to your question show, you're mixing php & jquery code.

your php code should look something like this:

if(isset($_POST['id'])) {
  $up_value=$row['vote_count'];
  echo "<script>$('#v".id."').html('".$up_value."');</script>";
}

edited Jun 26, 2012 at 9:08

answered Jun 26, 2012 at 4:26

we.mamat

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1 Comment

Danconia Over a year ago

Thanks all, your advice helped me figure it out. What I did for other newbies reference was echo $up_value; at the end of the php file and then in my jquery: success: function(html) {$("#v"+id).html(html);}

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