Home
>
Web Development
>
Track Your Visitors, Using PHP

Track Your Visitors, Using PHP

There are many different traffic analysis tools, ranging from simple counters to complete traffic analyzers. Although there are some free ones, most of them come with a price tag. Why not do it yourself? With PHP, you can easily create a log file within minutes. In this article I will show you how!

Getting the information

The most important part is getting the information from your visitor. Thankfully, this is extremely easy to do in PHP (or any other scripting language for that matter). PHP has a special global variable called $_SERVER which contains several environment variables, including information about your visitor. To get all the information you want, simply use the following code:

// Getting the information

$ipaddress = $_SERVER['REMOTE_ADDR'];

$page = "http://{$_SERVER['HTTP_HOST']}{$_SERVER['PHP_SELF']}";

$page .= iif(!empty($_SERVER['QUERY_STRING']), "?{$_SERVER['QUERY_STRING']}", "");

$referrer = $_SERVER['HTTP_REFERER'];

$datetime = mktime();

$useragent = $_SERVER['HTTP_USER_AGENT'];

$remotehost = @getHostByAddr($ipaddress);

As you can see the majority of information comes from the $_SERVER variable. The mktime() (http://nl2.php.net/mktime) and getHostByAddr() (http://nl2.php.net/mktime) functions are used to get additional information about the visitor.

Note: I used a function in the above example called iif(). You can get this function at http://nl2.php.net/mktime.

Logging the information

Now that you have all the information you need, it must be written to a log file so you can later look at it, and create useful graphs and charts. To do this you need a few simple PHP function, like fopen (http://nl2.php.net/mktime) and fwrite (http://nl2.php.net/mktime).

The below code will first create a complete line out of all the information. Then it will open the log file in "Append" mode, and if it doesn't exist yet, create it.

If no errors have occurred, it will write the new logline to the log file, at the bottom, and finally close the log file again.

// Create log line

// Write to log file:

$logfile = '/some/path/to/your/logfile.txt';

// Open the log file in "Append" mode

if (!$handle = fopen($logfile, 'a+')) {

die("Failed to open log file");

}

// Write $logline to our logfile.

if (fwrite($handle, $logline) === FALSE) {

die("Failed to write to log file");

}

fclose($handle);

Now you've got a fully function logging module. To start tracking visitors on your website simply include the logging module into your pages with the include() function (http://nl2.php.net/mktime):

include ('log.php');

Okay, now I want to view my log file

After a while you'll probably want to view your log file. You can easily do so by simply using a standard text editor (like Notepad on Windows) to open the log file, but this is far from desired, because it's in a hard-to-read format.

Let's use PHP to generate useful overviews for is. The first thing that needs to be done is get the contents from the log file in a variable, like so:

// Open log file

$logfile = "/some/path/to/your/logfile.txt";

if (file_exists($logfile)) {

$handle = fopen($logfile, "r");

$log = fread($handle, filesize($logfile));

fclose($handle);

} else {

die ("The log file doesn't exist!");

}

Now that the log file is in a variable, it's best if each logline is in a separate variable. We can do this using the explode() function (http://nl2.php.net/mktime), like so:

// Seperate each logline

$log = explode(" ", trim($log));

After that it may be useful to get each part of each logline in a separate variable. This can be done by looping through each logline, and using explode again:

// Seperate each part in each logline

for ($i = 0; $i < count($log); $i++) {

$log[$i] = trim($log[$i]);

$log[$i] = explode('|', $log[$i]);

}

Now the complete log file has been parsed, and we're ready to start generating some interesting stuff.

The first thing that is very easy to do is getting the number of pageviews. Simply use count() (http://nl2.php.net/mktime) on the $log array, and there you have it;

echo count($log) . " people have visited this website.";

You can also generate a complete overview of your log file, using a simple foreach loop and tables. For example:

// Show a table of the logfile

echo '';

echo 'IP Address';

echo 'Referrer';

echo 'Date';

echo 'Useragent';

echo 'Remote Host';

foreach ($log as $logline) {

echo '';

echo '' . $logline['0'] . '';

echo '' . urldecode($logline['1']) . '';

echo '' . date('d/m/Y', $logline['2']) . '';

echo '' . $logline['3'] . '';

echo '' . $logline['4'] . '';

echo '';

}

echo '';

You can also use custom functions to filter out search engines and crawlers. Or create graphs using PHP/SWF Charts (http://nl2.php.net/mktime). The possibilities are endless, and you can do all kinds of things!

In Conclusion...

In this article I have shown you have to create a logging module for your own PHP website, using nothing more than PHP and its built-in functions. To view the log file you need to parse it using PHP, and then display it in whatever way you like. It is up to you to create a kick-ass traffic analyzer.

If you still prefer to use a pre-built traffic analyzer, have a look at http://nl2.php.net/mktime.

About The Author

Dennis Pallett is a young tech writer, with much experience in ASP, PHP and other web technologies. He enjoys writing, and has written several articles and tutorials. To find more of his work, look at his websites at http://nl2.php.net/mktime, http://nl2.php.net/mktime and http://nl2.php.net/mktime.

non-toxic cleaning company Winnetka ..

In The News:

Researchers are now showing us that old smartphones as data centers could be the next big thing in sustainable tech.

Scientists have created micro-robots for sinus infection treatment that can enter the nasal cavity, eliminate bacteria directly at the source, and exit without harming surrounding tissue.

Let's examine how your data is collected in everyday life, who is buying and selling it, what happens to it afterward, and, most importantly, what you can do to protect yourself.

Researchers at the University of Sheffield in the U.K. developed small robots called "Pipebots" that can travel inside water pipes to find and potentially repair leaks, all without any excavation.

A groundbreaking new study has uncovered disturbing AI blackmail behavior that many people are unaware of yet.

Four teams of autonomous humanoid robots competed in China's first AI soccer tournament, demonstrating advanced capabilities in ball detection and independent decision-making.

The ID. Buzz autonomous van features self-driving technology with 13 cameras, nine LiDAR units and five radars after Volkswagen partnered with Hamburg and Uber for 2026 deployments.

Social Security phishing scams use urgency and impersonation to steal personal data. Learn how to spot fake SSA emails and implement 10 protective measures.

French startup Pazzi Robotics created an AI-powered pizza robot that made pies in under five minutes without human help, but it closed in 2022 despite patents and expert partnerships.

Reclaim your time from big tech with effective screen time reduction strategies for iPhone and Android, featuring steps to limit app usage and create phone-free zones.

Amazon Prime Day shoppers face threats from 120,000-plus scam websites as cybercriminals prepare phishing traps and malware ahead of the July sales event.

Fox News' AI Newsletter brings you the latest on this rapidly evolving technology.

The AEON humanoid robot tackles labor challenges with Nvidia AI, Microsoft Azure cloud and advanced spatial awareness, working alongside industry leaders Schaeffler and Pilatus.

Google's Ask Photos feature brings AI-powered searches to your photo library, letting you find memories with natural language queries while maintaining privacy controls.

The return of blue book exams emerges as universities fight widespread AI academic dishonesty and educators debate whether to ban AI tools or teach responsible usage.

Signs your phone might be hacked include strange behavior, unauthorized texts, battery drain and pop-ups, while protection involves updating software and avoiding public Wi-Fi.

Tokyo startup H2L has launched Capsule Interface technology enabling full-body robot control with muscle sensors, offering immersive remote operation.

The A.I. industry seems set for growing pains as Big Tech companies scramble for solutions to the medium's unprecedented strain on the power grid.

Fourth of July fireworks cause a 60% spike in lost pets, but GPS trackers and AI photo-matching services like Love Lost can help reunite missing dogs with their families.

Protect yourself from jugging, the rising crime by which thieves monitor ATM users and follow them to steal cash, with six practical safety tips to stay alert and secure.

U.S. airlines like Delta, American and United are selling your domestic flight records to government agencies through the little-known Travel Intelligence Program.

Autonomous robots from Uber Eats are rolling out across U.S. cities, featuring LIDAR sensors, secure compartments and all-weather operation for food and grocery delivery.

Costco has expanded into EV infrastructure with new ultra-fast charging stations that can charge most electric vehicles to 80% in 20-60 minutes while shoppers browse the warehouse.

The new Gemini Robotics On-Device AI allows robots to perform complex tasks without internet, offering enhanced privacy, reliability and adaptability for real-world use.

Protect yourself from Amazon phishing scams by spotting red flags like suspicious sender addresses and spelling errors while using Amazon's Message Center to verify communications.

Track Your Visitors, Using PHP

Web Development