Warning: session_start(): Cannot send session cookie – headers already sent by (output started at

The following warning comes in login page: Its working in localhost but not in remote host

Warning: session_start() [function.session-start]: Cannot send session cookie – headers already sent by (output started at on line 8)

Warning: session_start() [function.session-start]: Cannot send session cache limiter – headers already sent (output started at on line 8)

Contents hide

index.php

<?php
session_start();
if(isset($_SESSION['usr']) && isset($_SESSION['pswd'])){
header('Location: content.php');}
?>
<body>
<center>
<form method='post' action='login.php'>
<!– in this example I link it with login.php to check the password & username–>
<table>
<tr><td>Username:</td><td><input type='text' name='usr'></td></tr>
<tr><td>Password:</td><td><input type='password' name='pswd'></td>
</tr>
<tr><td><input type='submit' name='login' value='Login'></td>
<td><input type='reset' name='reset' value='Reset'></td></tr>
</table>
</form>
</center>
</body>

content.php

<body>
<a href="resumedownload.php" rel="nofollow noreferrer noopener">Click here to Download to Resume</a>
<?php
session_start();
if(!isset($_SESSION["usr"]) || !isset($_SESSION["pswd"])){
 header('Location: index.php');}
include 'logoff.php';
?>
</body>

login.php

<body>
<?php
session_start();
if($_REQUEST['usr']=='suman.trytek' && $_REQUEST['pswd']=='solutions'){
$_SESSION['usr'] = 'suman.trytek';
$_SESSION['pswd'] = 'solutions';
header('Location: content.php');
}
else{
header('Location: index.php');
}
?>
</body>

Answers:

Thank you for visiting the Q&A section on Magenaut. Please note that all the answers may not help you solve the issue immediately. So please treat them as advisements. If you found the post helpful (or not), leave a comment & I’ll get back to you as soon as possible.

Method 1

Move the session_start(); to top of the page always.

<?php
@ob_start();
session_start();
?>

Method 2

session_start() must be at the top of your source, no html or other output befor!
your can only send session_start() one time
by this way if(session_status()!=PHP_SESSION_ACTIVE) session_start()

Method 3

You cannot session_start(); when your buffer has already been partly sent.

This mean, if your script already sent informations (something you want, or an error report) to the client, session_start() will fail.

All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

0 0 votes

Article Rating