I want to know that whether on a php page we can get browser history?
Suppose I want to display a php page if a specific link on that browser has been visited earlier otherwise a blank page is to be displayed.
Is it possible to do so??
As it is your own site, you can store a session variable to confirm they went there, do something like
session_start();
$SESSION["VisitedMySpecialPage"]=time();
and then in the checker page
session_start();
if (isset($SESSION["VisitedMySpecialPage"]))
{
// check here it was within say the last hour..
}
You can track what pages where visited on your own domain, but you can't check what other domains he visited. You can check the referer header to see what site he came from , but that's only 1 site and isn't very reliable.
Well, there was workaround to this problem some time ago, I don't know which browser still can do it:
place <a> tag with href attr to link what you are interested on your
inspect <a> node (via JS), if that link got :visited pseudo class send
send result via ajax to server
Related
I'm trying to make a page with some links and when somebody clicks on a link, the score count will go up.
How can I find out the visitor who has really seen the page related to link? But not just click the link and close the page for score...
really seen means: page loads completed.
and my links opens in new window.
any solution?
You cant really see pages that aren't in the same domain. Chrome even puts them in a separate thread.
Back in the day you could have used a CSS exploit talked about here: https://developer.mozilla.org/en-US/docs/Web/CSS/Privacy_and_the_:visited_selector
If you really want to make a page with this kind of functionality you will have to make a browser plugin/extension.
You can include a nonce token in the link, and post that token to the server, render the page embedding that same token in some javascript and have the javascript post back the token when the page is done rendering. Seems kinda overkill though.
The only thing I could thing of is maybe make the link to like a redirect page on your site and then you could control to see if the page was loaded and then like after the page was loaded redirect to the actual webpage to link is intended. This way you know for sure that the user waited to view the webpage.
Other than that I don't think there is any other way for you to go about this.
I know this is a strange thing to want to do, but...
How can I place a photo at the top of someone else's webpage ("Page B") -only- when a visitor links there from my page ("Page A")? I have permission to do this, but with certain limitations: my code needs to be in one location on Page B, and I can't make major changes to Page B. I cannot use Page B's server to run PHP, but I can run PHP on Page A's server.
The photo needs to open automatically with the rest of the Page B, and not require any user input to show up.
This is a unique vendor/retailer situation, so unfortunately I can't provide the urls.
Thanks for any help.
In PHP, you'd do something like:
<?php
if($_SERVER['HTTP_REFERER'] == 'http://www.yoursite.com/referringpage.html')
{
printf('<img src="yourbutton.png">');
}
?>
Which is very limited because:
It will only work for a referring single page (referringpage.html) and not otherreferringpage.html
It will only work for a single landing page. If the user navigates off of the page, then back (not through browser's back), the button will not show up.
To solve the first you could do a substring of the referrer, e.g.
<?php
if(substring($_SERVER['HTTP_REFERER'],0,24) == 'http://www.yoursite.com/')
{
printf('<img src="yourbutton.png">');
}
?>
To solve the second you could set session variables (except then you'd need access to the very top of the "outermost" page -- which doesn't sound like an option.)
Depends on the design of the page.
Lets say,
If the page is divided into frames, then you can use iframe.
if It's a single page, try have a separation with div tag. Insert the html into Div Tag.
If the above two points won't help you,give an idea of how the page is designed
I think a simple answer would be to write a html page (lets call it linkPage) that has the image/text/div or whatever you want to display on the top and then include an iframe that would cover the rest of the page using css. You could pass the page you are linking to as a GET or POST parameter to the linkPage and then set the src of the iframe to that url.
There are probably other ways of doing this that are more complicated / seamless but this would be the easiest, quickest way to get it done.
AM a newbie in php, i have seen some web applications that have only index.php showing on the browsers address path, when you put the mouse pointer, you would see that the links show with together with the variables required for the next page. However when you click on the link, the address bar would still show index.php. If one enters the variables directly on the address bar, then it takes you back to the home page.
How is this done?
A common way to do this is using AJAX or JQuery, allowing you to place content from other pages within an element of your mainpage, not causing a browser page refresh, while still having the same page in the url.
Using firebug extension of firefox, on the network tab, you can inspect what is send and how to the server.
This can be done with some success by checking the HTTP Referer header.
Here is a link of how to do it
Beautiful way to remove GET-variables with PHP also checke using htaccess
We use iframes to show ads on our site.
Iframes are used to allow us to keep the ad generation code and other site modules separate.
As we track ad views on our site, and need to be able to keep an accurate count of which pagetype gets what views, I must ensure that users can't simply copy-paste the iframe in which the ad is loaded onto another site. This would cause ad count to become inflated for this page, and the count would not match the view count of the page the iframe "should" be displayed in.
Before anyone says so: no I can't simply compare the page view count with the ad view count, or use the page view count * number of ads per page, as # of ads per page will not necessarily be static.
I need to come up with a solution that will allow ads to be shown only for iframes that are generated dynamically and are shown on our pages.
I am not familiar with PHP sessions, but from what little reading I have had time to do, the following seems to be to be an acceptable solution:
Add "s = session_id()" to the src of the ad's iframe.
In the code that receives and processes ad requests, only return (and count) and ad if s == session_id().
Please correct me if I'm wrong, but this would ensure:
Ads would only be returned to iframes whose src was generated alongside the rest of the page's content, as is the case during normal use.
We can return our logo to ad calls with an invalid session_id.
So a simple example would be:
One of our pages:
<?php session_start(); ?>
<div id="someElement">
<!-- EVERYONE LOVES ADS -->
<iframe src="http//awesomesite.com/ad/can_has_ad.php?s=<?php echo session_id(); ?>></iframe>
</div>
ad/can_has_ad.php:
<?php session_start(); ?>
if($_GET['s'] == session_id()){
echo 'can has ad';
}
else{
echo '<img src="http://awesomesite.com/images/canhaslogo.jpg"/>';
}
And finally, copied code with static 's' parameter:
<!-- HAHA LULZ I WILL SCREW WITH YOUR AD VIEW COUNTS LULZ HAHA -->
<iframe src="http//awesomesite.com/ad/can_has_ad.php?s=77f2b5fcdab52f52607888746969b0ad></iframe>
Which would give them an iframe showing our awesome site's logo, and not screw with our view counts.
I made some basic test cases: two files, one that generates the iframe and echos it, and one that the iframe's src is pointed to, that checks the 's' parameter and shows an appropriate message depending on the result. I copied the iframe into a file and hosted it on a different server, and the correct message was displayed (cannot has ad).
So, my question is:
Would this work or am I being a PHP session noob, with the above test being a total fluke?
Thanks for your time!
Edit:
I'm trying to solve this without touching the SQL server, as the rest of the site is very SQL intensive and I don't want to add load to the already creaky SQL server...
You shouldn't really put the session id in the url because it makes it vulnerable to referrer snooping. (If the user follows a link from a page with the session id in the url, they will be able to see the session id in the referrer header)
Rather than using an iFrame, you might consider making the request for the iFrame contents on the server (eg using curl) and printing it onto your page. That way there will be no way for anyone else to directly embed it.
You could also consider checking the referrer header before loading the iFrame (which should be the containing page's url) but it is very easy to fake referrer headers so this shouldn't be considered a 'good' solution.
In summary, I'd strongly suggest finding another way of putting the ads onto your page!
I have an affiliate link on my webpage. When you click on the link it follows the href value which is as follows:
www.site_name.com/?refer=my_affiliate_id
This would be fine, except that the site offers no tracking for the ads, so I can't tell how many clicks I am getting. I could easily implement my own tracking by changing the original link href value to a php script which increments some click stats in a database and then redirects the user to the original page. Like so:
<?php // Do database updating stuff here
Header("Location: http://www.site_name.com/?refer=my_affiliate_id");
?>
But I have read some articles that say that using redirects may be seen by google as a sign of 'blackhat' techniques and they might rank me lower, unindex my site or even hurt the site that I'm redirecting too.
Does anybody know if this is true, or have any idea of the best way I could go about this?
Many thanks in advance
Joe
You could always do what Google does with search results. They have the link href normal, until the mousedown event. something to the effect of:
adlink.onmousedown = function(e) {
var callingLink = /* stuff to actually get the element here */;
callingLink.href = 'http://mysite.com/adtrack_redirect_page.ext?link=' + escape(callingLink.href);
}
Or something like that :P
So, Google will see a normal link, but almost all users will be redirected to your counter page.
Using a 301 redirect simple tells Google that the website is permamently moved. It should have, according to most random people on the internet and according to Google itself, no effect on your page-rank.
Actually I've read (can't remember where exactly) that this kind of redirect DOES HURT your rating. No, it won't "kill" your website nor the referenced, as far as I know (and please do check further), but it will hurt your site's rating as I said.
Anyway I'd recommend using some javascript to refer anything out of you domain - something like "window.open(....)" should do the trick, as Google will not follow this code.
There, refer to your tracking script which will redirect further.
You could use a javascript onClick event to send an ajax signal to your server whenever the link is clicked. That way the outgoing link is still fully functional, and your server-side script can increment your counter to track the clickthrough.