Why are my cookies not being set? - php

Question

We're using php to set some cookies for our users based on where they came from - some of these will be set based on the referrer URL, and some will be set based on a short query string in the URL.
We only set 2 cookies, and the purpose is to track where traffic is coming from and include the data in the user's submission for our product - then we are able to track which submissions come from which campaign.
It's a custom wordpress website, so the code is split across a few different files as follows:
header.php:
<?php
$origin = $_SERVER['HTTP_REFERER'];
$current = $_SERVER['PHP_SELF'];
$bestbefore = time() + 60 * 60 * 24 * 7;
if (isset($_COOKIE['ccsvissource']))
{
}
else
{
if (isset($_GET[gclid]))
{
setcookie('ccsvissource', 'Google', $bestbefore);
setcookie('ccsvismedium', 'Adwords', $bestbefore);
}
elseif (stripos($origin, 'facebook') !== false)
{
setcookie('ccsvissource', 'Advertising', $bestbefore);
setcookie('ccsvismedium', 'Facebook', $bestbefore);
}
elseif ($_GET[utm_medium] == "111")
{
setcookie('ccsvissource', 'Advertising', $bestbefore);
setcookie('ccsvismedium', 'emailcampaign', $bestbefore);
}
else
{
setcookie('ccsvissource', $origin, $bestbefore);
setcookie('ccsvismedium', 'Unknown', $bestbefore);
}
?>
footer.php:
<?php
$mktSource = $_COOKIE['ccsvissource'];
$mktMedium = $_COOKIE['ccsvismedium'];
?>
<p class="hide-me" id="mkt-source"><?php echo $mktSource; ?></p>
<p class="hide-me" id="mkt-medium"><?php echo $mktMedium; ?></p>
<script type="text/javascript">
$(document).ready(function(){
var mktSource = $('#mkt-source').text();
var mktMedium = $('#mkt-medium').text();
$('#hid-ms').val(mktSource);
$('#hid-mm').val(mktMedium);
});
</script>
The values will then get passed into the user's application form, with our lead management system doing the rest.
The problem is inconsistency - sometimes the cooks are being set, and sometimes not. Is there a certain circumstance client-side which will prevent cookies from being set?
I understand the user may have cookie tracking switched off, and have accounted for this - the volume of empty cookies is still too high so I think I'm missing something.
Please let me know if you need any further information!
Many thanks.

Answer 1

With new wordpress i've also face the same problem, my custom cookies wasn't set where my code was correct but somewhere i found that sometimes custom cookies does not work. So finally i found this working example with wp_head hook.
Let suppose you want to set 2 different cookies like Area and currency you need this function with wp_head, i have use this in my personal projects. it working prefectly.
add_action('wp_head', 'my_setcookie');
function my_setcookie()
{
if (!empty($_REQUEST['area'])) {
$area_set = ($_REQUEST['area']);
setcookie('area', $area_set, time() + 3600, COOKIEPATH);
}
if (!empty($_REQUEST['currency'])) {
$currency_request = ($_REQUEST['currency']);
setcookie('currency_cookie', $currency_request, time() + 3600, COOKIEPATH);
}
}