[PHP] Re: Session's is slowing the page ??
Hi PHP's sessions are blocking, i.e. until a session is closed, all other calls to session_start() are pending. If you don't close a session explicitely, it remains opened until the script is terminated. The solution is to close a session as soon as possible (session_write_close) or use non-blocking read-only sessions (session_readonly instead of session_start) in case you don't need to modify registered variables. Tom Dima Dubin wrote: Hello, I have very wierd problem : I use session to manage users and I have this structure of the page : - include(db.php); include(header.php); bla bla include(footer.php); - in the db.php I have : session_start(); #some mysql connect stuff I use session with the $_SESSION array (cheking if registered[isset($_S...)] and registering...) and all work fine but sometimes the page loading is very very very slow (and its a really really fast host) and when I removing session_start(); from the top of the page, the page load normaly. the PHP version is 4.1.1, someone have an idea ? thanks in advance, Dima. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: Session's is slowing the page ??
Hello Tom I looked in the manual for session_readonly because its basicly what I need : 1 login page, and the just read the session data in other pages but, there is no examples or anything like that in the manual could you please show me a little example how to use it on my pages ? THANKS !! Dima. Tom Mikulecky [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Hi PHP's sessions are blocking, i.e. until a session is closed, all other calls to session_start() are pending. If you don't close a session explicitely, it remains opened until the script is terminated. The solution is to close a session as soon as possible (session_write_close) or use non-blocking read-only sessions (session_readonly instead of session_start) in case you don't need to modify registered variables. Tom Dima Dubin wrote: Hello, I have very wierd problem : I use session to manage users and I have this structure of the page : - include(db.php); include(header.php); bla bla include(footer.php); - in the db.php I have : session_start(); #some mysql connect stuff I use session with the $_SESSION array (cheking if registered[isset($_S...)] and registering...) and all work fine but sometimes the page loading is very very very slow (and its a really really fast host) and when I removing session_start(); from the top of the page, the page load normaly. the PHP version is 4.1.1, someone have an idea ? thanks in advance, Dima. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: Session's is slowing the page ??
Login page: // suppose that user login was verified // Following code have to be executed only if user is valid session_start(); session_register(user,user_email);//register here all needed data. //In this case, it will register $user and $user_email in the session Put the following in session.inc and include session.inc on top of each script that has to be run for logged users session_readonly(); if((!session_is_registered(user)) || (!session_is_registered(user_email))) header(Location: login.php); This will redirect user to the login page if not logged in. If he was logged, script will go on and you can access $user and $user_email. Any change of their value will not be saved in the session Tom PS: in my PHP version 4.04 , function session_readonly() is unknown. What I use instead is: session_start(); session_write_close(); //session_end is also unknown by 4.0.4 Dima Dubin wrote: Hello Tom I looked in the manual for session_readonly because its basicly what I need : 1 login page, and the just read the session data in other pages but, there is no examples or anything like that in the manual could you please show me a little example how to use it on my pages ? THANKS !! Dima. Tom Mikulecky [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Hi PHP's sessions are blocking, i.e. until a session is closed, all other calls to session_start() are pending. If you don't close a session explicitely, it remains opened until the script is terminated. The solution is to close a session as soon as possible (session_write_close) or use non-blocking read-only sessions (session_readonly instead of session_start) in case you don't need to modify registered variables. Tom Dima Dubin wrote: Hello, I have very wierd problem : I use session to manage users and I have this structure of the page : - include(db.php); include(header.php); bla bla include(footer.php); - in the db.php I have : session_start(); #some mysql connect stuff I use session with the $_SESSION array (cheking if registered[isset($_S...)] and registering...) and all work fine but sometimes the page loading is very very very slow (and its a really really fast host) and when I removing session_start(); from the top of the page, the page load normaly. the PHP version is 4.1.1, someone have an idea ? thanks in advance, Dima.
[PHP] Re: Session's is slowing the page ??
Hi Tom Thanks for your help but the problem still happens :-( First I tried to use session_readonly() but it was unknown FUNC` in my php, then I try the second way : I have header.php footer.php in the header I use session_start(); and in the footer I use session_write_close() and still every minute the site freezes. Is there any other way ? I really need to use these session's... thanks again for your great help, Dima. Tom Mikulecky [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Login page: // suppose that user login was verified // Following code have to be executed only if user is valid session_start(); session_register(user,user_email);//register here all needed data. //In this case, it will register $user and $user_email in the session Put the following in session.inc and include session.inc on top of each script that has to be run for logged users session_readonly(); if((!session_is_registered(user)) || (!session_is_registered(user_email))) header(Location: login.php); This will redirect user to the login page if not logged in. If he was logged, script will go on and you can access $user and $user_email. Any change of their value will not be saved in the session Tom PS: in my PHP version 4.04 , function session_readonly() is unknown. What I use instead is: session_start(); session_write_close(); //session_end is also unknown by 4.0.4 Dima Dubin wrote: Hello Tom I looked in the manual for session_readonly because its basicly what I need : 1 login page, and the just read the session data in other pages but, there is no examples or anything like that in the manual could you please show me a little example how to use it on my pages ? THANKS !! Dima. Tom Mikulecky [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Hi PHP's sessions are blocking, i.e. until a session is closed, all other calls to session_start() are pending. If you don't close a session explicitely, it remains opened until the script is terminated. The solution is to close a session as soon as possible (session_write_close) or use non-blocking read-only sessions (session_readonly instead of session_start) in case you don't need to modify registered variables. Tom Dima Dubin wrote: Hello, I have very wierd problem : I use session to manage users and I have this structure of the page : - include(db.php); include(header.php); bla bla include(footer.php); - in the db.php I have : session_start(); #some mysql connect stuff I use session with the $_SESSION array (cheking if registered[isset($_S...)] and registering...) and all work fine but sometimes the page loading is very very very slow (and its a really really fast host) and when I removing session_start(); from the top of the page, the page load normaly. the PHP version is 4.1.1, someone have an idea ? thanks in advance, Dima. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: Session's is slowing the page ??
Hat you do is the same as if you do nothing, because your session_write_close() is called near the end of script and sessions are automatically closed at the end of a script. You should 'copy' all needed variables from the session in your header.php like this: session_start(); $copy_user = $user;//if $user and $user_email are session data $copy_user_email = $user_email; session_write_close();//or session_end() if your php knows it That way you can access $copy_* in the body instead of session variables. It works as readonly access to session data Tom Dima Dubin wrote: Hi Tom Thanks for your help but the problem still happens :-( First I tried to use session_readonly() but it was unknown FUNC` in my php, then I try the second way : I have header.php footer.php in the header I use session_start(); and in the footer I use session_write_close() and still every minute the site freezes. Is there any other way ? I really need to use these session's... thanks again for your great help, Dima.
[PHP] Re: Session's is slowing the page ??
THANK YOU !!! Tom Mikulecky [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... Hat you do is the same as if you do nothing, because your session_write_close() is called near the end of script and sessions are automatically closed at the end of a script. You should 'copy' all needed variables from the session in your header.php like this: session_start(); $copy_user = $user;//if $user and $user_email are session data $copy_user_email = $user_email; session_write_close();//or session_end() if your php knows it That way you can access $copy_* in the body instead of session variables. It works as readonly access to session data Tom Dima Dubin wrote: Hi Tom Thanks for your help but the problem still happens :-( First I tried to use session_readonly() but it was unknown FUNC` in my php, then I try the second way : I have header.php footer.php in the header I use session_start(); and in the footer I use session_write_close() and still every minute the site freezes. Is there any other way ? I really need to use these session's... thanks again for your great help, Dima. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: Session's is slowing the page ??
It might have something to do with the way the session extension in PHP performs garbage collection. There's a setting in php.ini that basically controls how often garbage collection is performed. The value is a percentage, and determines how often the GC should be done over a random number of session_start() requests. If GC is invoked, the garbage collector will start to delete all of the expired session files in your session directory. If there's a lot of them, it might take longer to load the page that the garbage collection was started on. Since the garbage collector is called at random based on the aforementioned setting, not every page will be affected. The problem could probably be cut down by increasing the value of the GC setting, as fewer files would need to be deleted with each GC sweep, as more GC sweeps will be called overall. That's just a guess, though. J Dima Dubin wrote: Hello, I have very wierd problem : I use session to manage users and I have this structure of the page : - include(db.php); include(header.php); bla bla include(footer.php); - in the db.php I have : session_start(); #some mysql connect stuff I use session with the $_SESSION array (cheking if registered[isset($_S...)] and registering...) and all work fine but sometimes the page loading is very very very slow (and its a really really fast host) and when I removing session_start(); from the top of the page, the page load normaly. the PHP version is 4.1.1, someone have an idea ? thanks in advance, Dima. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP] Re: Session's is slowing the page ??
Hello J, I try to change the gc probability in the .htaccess (php_value session.gc_probability = 10) but it didnt work :-( Is there any other ideas ? maybe it a bug in PHP ? THANKS, Dima. J Smith [EMAIL PROTECTED] wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... It might have something to do with the way the session extension in PHP performs garbage collection. There's a setting in php.ini that basically controls how often garbage collection is performed. The value is a percentage, and determines how often the GC should be done over a random number of session_start() requests. If GC is invoked, the garbage collector will start to delete all of the expired session files in your session directory. If there's a lot of them, it might take longer to load the page that the garbage collection was started on. Since the garbage collector is called at random based on the aforementioned setting, not every page will be affected. The problem could probably be cut down by increasing the value of the GC setting, as fewer files would need to be deleted with each GC sweep, as more GC sweeps will be called overall. That's just a guess, though. J Dima Dubin wrote: Hello, I have very wierd problem : I use session to manage users and I have this structure of the page : - include(db.php); include(header.php); bla bla include(footer.php); - in the db.php I have : session_start(); #some mysql connect stuff I use session with the $_SESSION array (cheking if registered[isset($_S...)] and registering...) and all work fine but sometimes the page loading is very very very slow (and its a really really fast host) and when I removing session_start(); from the top of the page, the page load normaly. the PHP version is 4.1.1, someone have an idea ? thanks in advance, Dima. -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
