I need to access the Session in my PHP Web-Socket. I've already got the SessionID from the header but if I try to start the session, I get the Error:
PHP Warning: session_start(): Cannot send session cookie - headers
already send by (output started at ....)
I tried (https://stackoverflow.com/a/31532785/8510512):
session_id($sessionID);
session_start();
Related
When execute header("Location: new/location.php") command I got session problems.
On local host testing everything works just perfect, but if i send my project on web server hosting i got these errors:
Warning: session_start(): Cannot send session cookie - headers already sent by (output started at /srv/disk4/2008248/www/some-url.com/new/location.php:2) in /srv/disk4/2008248/www/some-url.com/new/location.php on line 7
Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /srv/disk4/2008248/www/some-url.com/new/location.php:2) in /srv/disk4/2008248/www/some-url.com/new/location.php on line 7
, so my question is how to fix this problems and keep session values alive, so i can use that values in another redirected page?
Warning: session_start(): Cannot send session cookie - headers already... a typical error when something is before session_start()
You need to write session_start() above headers(). As error says you already sent something beforee session start. Make Session start the very first line of your script, and leave no spaces before <?php tag
use ob_start(); on top of the php page
session_start(): Cannot send session cache limiter - headers already sent (output started at)
Every time I login to my cpanel, it always say connection is not private. So, what I do is to click the link on the advance option, then whenever I upload php files it always say:
Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at directory file)
Even though there's no error in my code, it functions well but, the warning keeps bothering me, please help!
For the cPanel login, Please check your cPanel services SSL Certificates if you have root access, As there is an issues with the cPanel SSL and due to that you are unable to login your cPanel.
This question already has answers here:
Warning: session_start() failed: No such file or directory
(5 answers)
How to fix "Headers already sent" error in PHP
(11 answers)
Closed 8 years ago.
After reading other similar question this is what I understand. I can set my own session_save_path() but i am on a shared host and can't set the save path above public_html. For session_start() headers alredy sent there is nothing else above my session_start() statement. The second warning says output started at 2 lines of index.php that is exactly where I have set session_start().
Here is the exact error i am getting
Warning: session_start(): open(/home/users/web/b2659/ipg.apnasikkacom/cgi-bin/tmp/sess_d48d5bfff4fc5df81ab868122feec5e3, O_RDWR) failed: No such file or directory (2) in /hermes/bosnaweb04a/b2659/ipg.apnasikkacom/8mags/bored/people/index.php on line 2
Warning: session_start(): Cannot send session cookie - headers already sent by (output started at /hermes/bosnaweb04a/b2659/ipg.apnasikkacom/8mags/bored/people/index.php:2) in /hermes/bosnaweb04a/b2659/ipg.apnasikkacom/8mags/bored/people/index.php on line 2
Warning: session_start(): Cannot send session cache limiter - headers already sent (output started at /hermes/bosnaweb04a/b2659/ipg.apnasikkacom/8mags/bored/people/index.php:2) in /hermes/bosnaweb04a/b2659/ipg.apnasikkacom/8mags/bored/people/index.php on line 2
I have put session_start() at the top of my PHP file.
Here is the code
<?php
session_start();
$mysqli = new mysqli($db_hostname,$db_username,$db_password,$db_database);
and other PHP code. I am using some PHP templates like this
<?php include_once("../../templates/socialtemplate.php")?>
but all these includes are after the first section of session_start() code.
I have multiple sites hosted on a server and most of them use sessions when users login.
for example, i have a session variable $_SESSION["loggedin"] = 'yes' if the users login is successful.
this is the same on multiple sites but if i login to say 2 sites at the same time one of them will stop working and display these errors:
Warning: session_start() [function.session-start]: open(/tmp/sess_8f7b4997fbfdd08855a410ae4638821f, O_RDWR) failed: Permission denied (13) in /home/theboaty/public_html/new_site/admin/authorisation.php on line 2
Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/theboaty/public_html/new_site/admin/authorisation.php:2) in /home/theboaty/public_html/new_site/admin/authorisation.php on line 2
Warning: Cannot modify header information - headers already sent by (output started at /home/theboaty/public_html/new_site/admin/authorisation.php:2) in /home/theboaty/public_html/new_site/admin/authorisation.php on line 5
Warning: Unknown: open(/tmp/sess_8f7b4997fbfdd08855a410ae4638821f, O_RDWR) failed: Permission denied (13) in Unknown on line 0
Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct (/tmp) in Unknown on line 0
Note: authorisation.php checks for the loggedin session variable to see if the user is logged in or not
I have much the same problem because I use a custom user handler that takes sessions.
I found that logging onto two different related sites on the same server using the same browser window but with different tabs there was crosstalk.
If this is not acceptable, I suggest you rename your session variables by site vis:
$_SESSION['site1']['isloggedin']=1;
I am trying to run this code in my server
<?php
session_start();
?>
I am getting following warning messages. I never saw such warning before .
Warning: session_start() [function.session-start]: open(/var/chroot/home/content/00/6684400/tmp/sess_uoouukt8m6efc0nc2ar5t2vq94, O_RDWR) failed: No such file or directory (2) in /home/content/00/6684400/html/html-tweetcomments/y.php on line 2
Warning: session_start() [function.session-start]: Cannot send session cookie - headers already sent by (output started at /home/content/00/6684400/html/html-tweetcomments/y.php:2) in /home/content/00/6684400/html/html-tweetcomments/y.php on line 2
Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/content/00/6684400/html/html-tweetcomments/y.php:2) in /home/content/00/6684400/html/html-tweetcomments/y.php on line 2
Warning: Unknown: open(/var/chroot/home/content/00/6684400/tmp/sess_uoouukt8m6efc0nc2ar5t2vq94, O_RDWR) failed: No such file or directory (2) in Unknown on line 0
Warning: Unknown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct () in Unknown on line 0
how can i solve this problems?
Make sure, folder /var/chroot/home/content/00/6684400/tmp exists and is writable by PHP
sudo mkdir -p /var/chroot/home/content/00/6684400/tmp/
sudo chmod 1777 /var/chroot/home/content/00/6684400/tmp/
session_start() sets a cookie containing the session id. In the HTTP protocol, Cookies are sent in the HTTP header Set-Cookie.
If you send any output (including PHP warnings), this will be written into the HTTP answer body and PHP is no longer able to send a header.
To make sure the HTTP response body is written at the very end you can add a ob_start() at the very beginning of your PHP script.
This creates a output buffer which will be automatically flushed to output when the script reaches the end.
References
PHP Session
Sticky Bit
HTTP Cookies
PHP ob_start()
Problem with permissions.
Check tmp folder permissions. Make it writable.
Failed to write session data (files).
Also, check there's no HTML or whitespace before session_start()
Warning: session_start() [function.session-start]: Cannot send session
cookie - headers already sent by (output started at
/home/content/00/6684400/html/html-tweetcomments/y.php:2) in
/home/content/00/6684400/html/html-tweetcomments/y.php on line 2
Something is being printed before your session_start call. Check for any echo or even any blank space in html, before your call
The clue is the first error:
open(/var/chroot/home/content/00/6684400/tmp/sess_uoouukt8m6efc0nc2ar5t2vq94, O_RDWR)
failed: No such file or directory (2)
It looks like the directory that is being referenced for the session files either doesn't exist or isn't writable by the web user (user as which the web server is running).
Check that the directory exists - create it if not.
Ensure that it is group writable by the web server user.
The first error is causing the rest of the errors;
If there is same output before php code, move it after the php code
Example:
<script>
...javascript code...
</script>
<?php
session_start();
?>
move the script tag after the php tag. Like this:
<?php
session_start();
?>
<script>
...javascript code...
</script>