[SOLVED] PHP Session variable value doesn't retrieved to another page

Q. PHP Session variable value is not transfering?

So, you are having trouble with php session variables! Well, Let see how can it being solved! If you didn't read about PHP Session variables then have a look on the manual!

Well let see what is happening...

PHP file: <test1.php>

<?PHP
session_start();

header("Access-Control-Allow-Origin: *"); 
header("Content-Type: application/json; charset=UTF-8");

//some code to determine $approvedToSet
$approvedToSet = true;
if(isset($approvedToSet))
{
$_SESSION["userName"] = 'MyName'; 
echo " Session variable is set." .$_SESSION["userName"];
} 
else { 
echo "User name is not set";} 

?>

PHP file: <test2.php>

<?PHP
echo $_SESSION["userName"];

ERROR:

Notice: Undefined index: userName in /var/www/xyz on line 30



[Solution:]

Correct Your file and ensure session_start(); function is on the top of your page.

PHP file: <test2.php>

<?PHP
session_start()
echo $_SESSION["userName"]; ?>

1. Stop your apache2 or http server and start it again!
2. Ensure session.save_path has been set.
3. Must be Make sure session_start(); is called before any sessions are being called. So a safe bet would be to put it at the beginning of your page, immediately after the opening <?php tag before anything else. Also ensure there are no whitespaces/tabs before the opening <?phptag.
4. After the header redirect, end the current script using exit(); (Others have also suggestedsession_write_close(); and session_regenerate_id(true), you can try those as well, but I'd use exit();).
5. Make sure cookies are enabled in the browser you are using to test it on.
6. Ensure register_globals is off, you can check this on the php.ini file and also using phpinfo(). Refer to this as to how to turn it off.
7. Make sure you didn't delete or empty the session.
8. Make sure the key in your $_SESSION superglobal array is not overwritten anywhere.
9. Make sure you redirect to the same domain. So redirecting from a www.yourdomain.com to yourdomain.com doesn't carry the session forward.
10. Make sure your file extension is .php (it happens!).
11. If you use a connection script, dont forget to use start_session(); at the connection too, had some trouble before noticing that issue.

iu

Tags: coding → debugging → error → novice coding → novice debug → php concept → solution

[SOLVED] PHP Session variable value doesn't retrieved to another page

By Game Changer → Friday, May 5, 2017

[Solved] MySQL Error on Snow Leopard

From the terminal:

Hristo$ sudo /usr/local/mysql/support-files/mysql.server start
Starting MySQL
.....................................................................
ERROR! Manager of pid-file quit without updating file.

so I checked the status:

Hristo$ sudo /usr/local/mysql/support-files/mysql.server status
Password:
/usr/local/mysql/support-files/mysql.server: line 418: pidof: command not found
 ERROR! MySQL is not running

Again tried this?

Hristo$ /usr/local/mysql/bin/mysql -u root -p
Enter password: 
ERROR 2002 (HY000): Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)

mysql.err:

100706 11:38:36 mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data
100706 11:38:36 [Warning] '--log' is deprecated and will be removed in a future release. Please use ''--general_log'/'--general_log_file'' instead.
100706 11:38:36 [Warning] '--log_slow_queries' is deprecated and will be removed in a future release. Please use ''--slow_query_log'/'--slow_query_log_file'' instead.
100706 11:38:36 [Warning] Setting lower_case_table_names=2 because file system for /usr/local/mysql/data/ is case insensitive
100706 11:38:36 [Note] Plugin 'FEDERATED' is disabled.
100706 11:38:36  InnoDB: Started; log sequence number 0 69987
100706 11:38:36 [ERROR] Can't start server : Bind on unix socket: Permission denied
100706 11:38:36 [ERROR] Do you already have another mysqld server running on socket: /var/mysql/mysql.sock ?
100706 11:38:36 [ERROR] Aborting

100706 11:38:36  InnoDB: Starting shutdown...
100706 11:38:41  InnoDB: Shutdown completed; log sequence number 0 69987
100706 11:38:41 [Note] /usr/local/mysql/bin/mysqld: Shutdown complete

Solution:

Configure correctly your my.cnf file.

[mysqld]
#
# * Basic Settings
#

user        = mysql
pid-file    = /var/run/mysqld/mysqld.pid
socket      = /var/run/mysqld/mysqld.sock
port        = 3306
basedir     = /usr
datadir     = /var/lib/mysql
tmpdir      = /tmp
skip-external-locking

#
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
bind-address        = 127.0.0.1

Tags: advanced php → database → error → mysql

[Solved] MySQL Error on Snow Leopard

By Game Changer → Friday, December 11, 2015

[Solved] PHP fopen() Error: failed to open stream: Permission denied

Finally You have fethed the error. Is it?

Warning: fopen(/path/to/file.ext) [function.fopen]: failed to open stream: Permission denied

NOTE: You are opening a file. Make sure the correct file permissions you have.

In Ubuntu the php user group is www-data:www-data and for centos is apache:apache
- Ensure your user www-data is a member of root

adduser www-data root

Then use this command in terminal
chmod g+rw /path/to/file/



Try with php fopen again:

$myFilePath = "/path/to/file.ext";
$file_handle = fopen( $myFilePath, 'r+' );

Also! You can chmod 775 for you directory.
chmod 0775 /path/to/file/

Check the followings:

• The directory has the correct file permissions (755) and the correct ownership. This is true all the way up the path to /home.
• Ensure correct directory as confirmed by getcwd()
• The test PHP script hash the same ownership as the path trying to write to and correct permission (644).
• PHP safe mode is disabled in php.ini.
• fopen is not a disallowed PHP function.
• The use of open_basedir is disabled.
• A parent directory has the wrong permissons.

Yet Not?

Remember that in order to reach a file, ALL parent directories must be readable by www-data. You strace output seems to indicate that even accessing /var/log/apache2/writetest is failing. Make sure that www-data has permissions on the following directories:

• / (r-x)
• /var (r-x)
• /var/log (r-x)
• /var/log/apache2 (r-x)
• /var/log/apache2/writetest (rwx)
• /var/log/apache2/writetest/writetest.log (rw-)

Yet Not Again?

Could be a SELinux issue, even if Debian doesn't ship it in the default installation your provider could have enabled it. Look for messages in /var/log with

grep -i selinux /var/log/{syslog,messages}

If that's the cause and you need to disable it, here are instructions: look for file /etc/selinux/config, here it's default content. Change SELINUX directive to disabled and reboot the system.

# This file controls the state of SELinux on the system.
# SELINUX= can take one of these three values:
#   enforcing - SELinux security policy is enforced.
#   permissive - SELinux prints warnings instead of enforcing.
#   disabled - SELinux is fully disabled.
SELINUX=disabled
# SELINUXTYPE= type of policy in use. Possible values are:
#   targeted - Only targeted network daemons are protected.
#   strict - Full SELinux protection.
SELINUXTYPE=targeted

Tags: coding → debugging → error

[Solved] PHP fopen() Error: failed to open stream: Permission denied

By Game Changer → Monday, December 7, 2015