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.

Wood Dale Chicago prom limo .. Lockport Chicago limo O’Hare

In The News:

Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents

Internet browsers are useful, but they can be dangerous. Clicking on malicious links can direct you to dangerous websites that steal information or infect your device.

Apple's latest iOS update introduces advanced artificial intelligence capabilities, which may be capturing and analyzing sensitive information.

Breach site confirmed 56,904,909 Hot Topic users' data leaked online. Tech expert Kurt “CyberGuy" Knutsson says the company's silence makes matters even worse.

Tech expert Kurt “CyberGuy" Knutsson discusses how an innovative Easy-Way kit turns standard strollers electric, simplifying navigation for parents.

Tech expert Kurt “CyberGuy" Knutsson talks about T-Mobile being hacked in broad cyberattack on global phone and internet companies.

Tech expert Kurt “CyberGuy" Knutsson shows you how to add, customize and manage widgets for quick access to apps and info from your iPhone home screen.

Wrong Google searches can not only compromise your device and personal data. They can also bring law enforcement to your doorstep. Hackers are targeting Google searches.

China's Shanghai Kepler Robotics has developed a new humanoid robot that can carry up to 35 pounds per hand for commercial applications across various industries

Checking your hearing has gotten easier with the new hearing test feature in AirPods Pro 2. You can take reliable hearing tests using your iPhone or iPad.

Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.

Kurt "CyberGuy" Knutsson explains how a VPN — virtual private network — works and how running it can slow down the operation of your device.

The WalkON Suit F1, an exoskeleton developed to help people with disabilities, can actually walk over to a person in a wheelchair, solving a major problem.

ClickFix, a new scam targeting computer users, is on the rise in the U.S. The scam prompts its targets to click on a link to fix a problem.

Skydweller is the world's largest unmanned solar-powered aircraft that can stay airborne for weeks, and even months, without refueling.

The U.S. government said it is investigating after People's Republic of China hackers targeted commercial telecommunications service providers in the U.S.

Stay up to date on the latest AI technology advancements and learn about the challenges and opportunities AI presents now and for the future.

Scammers are using increasingly sophisticated ways to lure unsuspecting victims, and some are impersonating an email help desk or support team.

You can unsend or edit your iMessages with the latest iOS updates. Kurt the CyberGuy explains how you can save yourself some potential embarrassment.

Kurt “CyberGuy" Knutsson says there’s been a rise in cybercriminal services using hacked police and government emails to send subpoenas and data requests to U.S. companies.

Kurt “CyberGuy" Knutsson discusses how Axiom Space and luxury designer Prada are collaborating on NASA's Artemis III spacesuit design.

Voice assistants may cause confusion across devices. Tech expert Kurt “CyberGuy" Knutsson offers some solutions to fix it.

Shameless scammers trick veterans into giving personal info or cash. Tech expert Kurt “CyberGuy" Knutsson explores five common scams.

Tech expert Kurt “CyberGuy" Knutsson helps you honor our heroes with these powerful podcasts, audiobooks and documentaries this Veterans Day.

Track Your Visitors, Using PHP

Web Development