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Session in PHP


Pawan_Agarwal
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I am using this code 

 

 

 
<?php
session_start();
// store session data
$_SESSION['views']=1;
?>
 
 
<html>
<body>
<?php
//retrieve session data
echo "<br><br>Pageviews=". $_SESSION['views'];
 
if(isset($_SESSION['views']))
$_SESSION['views']=$_SESSION['views']+1;
else
$_SESSION['views']=1;
echo "<br><br>Views=". $_SESSION['views'];
?>
 
</body>
</html>
 
 
it is giving error, I don't know how to remove it. 
Cannot send session cookie - headers already sent by (output started at C:\xampp\htdocs\prac\session1.php:2) in C:\xampp\htdocs\prac\session1.php on line 3
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Put ob_start() after opening <?php. This is probably due to the whitespace you have. As such:

<?php
ob_start(); // Output buffering
session_start();
// store session data
$_SESSION['views']=1;
?>
 
 
<html>
<body>
<?php
//retrieve session data
echo "<br><br>Pageviews=". $_SESSION['views'];
 
if(isset($_SESSION['views']))
$_SESSION['views']=$_SESSION['views']+1;
else
$_SESSION['views']=1;
echo "<br><br>Views=". $_SESSION['views'];
?>
 
</body>
</html>
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That was quick help, now I am stuck in another issue..........

 

I am developing counter on website, that will show the total number of visitors visited the website, however, the code I have created keeps on increment when I click same or different web pages

 

 

<?php
///session_start(); 
 
$username = "********";
$password = "********";
$hostname = "********";
$database = "********";
$conn = mysql_connect($hostname, $username, $password, $database) or die("Could not connect: ".mysql_error());
$selected = mysql_select_db("*******",$conn) or die("Could not select database");
$result = mysql_query("SELECT * from visitors");
 
if(!$result)
{echo(die("cannot execute:").mysql.error());}
$total; /// $total will contain all the total visitors in website
 
$i;//////temp variable
 
//fetch thw data from the database
while ($row = mysql_fetch_array($result)) {
   $total=$row['Total'];   
}
 
$_SESSION['views'] = $total;
if(isset($_SESSION['views']))
   // store session data
$total=$total+1;
$result = mysql_query("UPDATE visitors SET Total='$total'") ;
}
$i=$total;
 
$str="0000000".(string)$i;
 
$len1=strlen($str);
 
echo"<div class=\"desc2\">Visitor:";
while($len<$len1)
{
echo " <img src='/counter/crt/".$str[$len].".gif'/>";
$len++;
}
?>
</div>
 
 
===================================================
I am looking for something that will update the visitor number as soon as website is hitted, after that it should remain static, but the code I have written is increasing the counter as I am clicking the website again and again......
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When you're inserting a page view count to the database, log its IP address too. That way, you can check if the IP address is already registered and if it is, don't count it anymore. Not the most fool-proof method, but that works.

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