使用PHP识别HTML页面

Question

Is there a way to identify different HTML pages using PHP, For example I want to know from which page data is submitted so that i can make some logic using PHP,

If i had a example.html & example2.html pages both submitting to logic.php, Now if the data comes from example.html

$data = Array();

$data['template'] $_POST['example'];
$data['template'] $_POST['example2'];

So the logic would be like

if(LOGIC){
     $data['template'] $_POST['example'];
}else{
     $data['template'] $_POST['example2'];
}

But I am not sure how to identyfie particular pages

Answer 1

Either you include a hidden field into the form

<input type="hidden" name="hiddenfield" value="example1">

and

if($_POST['hiddenfield']=="example1") {
} else {
}    

or you use the referer

if(substr_count($_SERVER['HTTP_REFERER'],"example.htm")) {
} else
}

http://www.php.net/manual/en/reserved.variables.server.php

'HTTP_REFERER' The address of the page (if any) which referred the user agent to the current page. This is set by the user agent. Not all user agents will set this, and some provide the ability to modify HTTP_REFERER as a feature. In short, it cannot really be trusted.

Both have their pros and cons, and both can of course be faked by the user...