Pass variable from PHP to jQuery POST [duplicate]

Question

I'm trying to track page referrals, so I might have a URL like:

www.example.com/?ref=google

I've successfully captured that referral as a variable like so:

if ($_GET['ref'] !== "") {
    $ref = $_GET['ref'];
}
else {
    $ref = "";
}

How can I pass it through my jQuery POST function?

$.post("signup.php", {email: email, ref: /* what goes here */}, function(data){
                $("#validation-message").text(data).addClass("error-text");
            });

I've read about json_encode() but is that just for arrays?

You already have access to that value in PHP through $_GET. Why would you need JS to send it to PHP too? — Rory McCrossan
– Rory McCrossan, Commented Jan 17, 2018 at 13:17
whatever your php script writes to the document is received by jquery response — mehulmpt
– mehulmpt, Commented Jan 17, 2018 at 13:18
@RoryMcCrossan because I'm using jQuery to avoid a page refresh when submitting the form. Is there a more elegant way of doing this? — Sebastian
– Sebastian, Commented Jan 17, 2018 at 13:18

Eddie · Accepted Answer · 2018-01-17 13:19:32Z

4

You can echo the variable to pass it to js.

var ref = '<?php echo $ref; ?>'; /*Assigning the php value to js*/

$.post("signup.php", {email: email, ref: ref }, function(data){
       $("#validation-message").text(data).addClass("error-text");
});

answered Jan 17, 2018 at 13:19

Eddie

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Comments

Ezekiel · Accepted Answer · 2018-01-17 13:21:14Z

0

You can echo out the php value into an input hidden textbox value, and call it out via jQuery or assign it to a js value, there are so many ways to do it. It all depends on how and what you want to achieve

answered Jan 17, 2018 at 13:21

Ezekiel

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