Salary: To £30K depending on experience

Based: Guildford, Surrey

We are looking for an experienced PHP developer to join our expanding team in Guildford developing a new User eXperience (UX) product.

Key skills include PHP 5, MySQL, CSS, JavaScript, jQuery

Experience of web analytics and / or website performance monitoring would be an advantage but not essential.

Please submit your CV to CEO Phil Smith (phil@cloudtesting.com)

We work with a select number of recruitment consultants and regret that we are unable to take enquiries from new agencies.

To generate different (randomised) content – two versions in this case, but you can add as many as you want:

PHP Code

// get a random number in the range 0-1 (inclusive)
$pageVersion = rand(0,1);

// set the server side session variable

$_SESSION["PageVersion"] = $pageVersion;

if ($pageVersion == 0)
{
    $cSmarty->display('/index.tpl');
}
else
{
    $cSmarty->display('/index2.tpl');
}

Of course you may not want to have a completely different entire page, in which case simply drop in different content into various places on the page and then set appropriate session variables to allow the tracking.

When the final event takes place (such as the purchase or sign-up) all you have to do is inspect the session variable to work out which route they too.

echo $_SESSION["PageVersion"];

The above is all possible via your AdWords account, but there are times when it’s better to do your own thing and not let Google know everything about you.

“Why would you want to do that ?” you might ask, well we use it to offer special offers to customers in markets or countries we’re targeting. You might also not be interested or able to provide your service in a country.

It’s all done  server side based on the IP that they come from, and makes use of the service from IP Info DB – http://www.ipinfodb.com/

In PHP you can get the country of the visitor using the following code (for PHP5):

function visitorCountry() {

    $ip = getenv('REMOTE_ADDR');
    $d = file_get_contents(
        "http://www.ipinfodb.com/ip_query_country.php?ip=$ip&output=xml");

    //Use backup server if cannot make a connection
    if (!$d) {
        $backup = file_get_contents(
            "http://backup.ipinfodb.com/ip_query.php?ip=$ip&output=xml");

        $answer = new SimpleXMLElement($backup);

        if (!$backup)
            return false; // Failed to open connection

    } else {
        $answer = new SimpleXMLElement($d);
    }
    return $answer->CountryCode;
}

Once you have this, you can re-direct visitors to specific pages (in this case US customers).

$sCountryFrom = visitorCountry();
if ( $sCountryFrom == 'US' )
{
    header('Location: /special_offer_us.php');
    exit(0);
}

or customize content on a page, change prices dynamically, serve language specific content (in the following example using Smarty).

if ( $sCountryFrom == 'DE' )
{
    // serve German content template if they are from Germany

    $cSmarty->display('/index_de.tpl');
}
else
{
    // serve English to everyone else
    $cSmarty->display('/index.tpl');
}