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session_set_save_handler and error handling

Let open, close, read, write, destroy and gc be PHP functions to save
the superglobal array $_SESSION in a database.

I would like to use the following code:

[1] session_set_save_handler(open,close,read,write,gc) ;
[2] session_start();
[3] if(!isset($_SESSION))
[4] {
/* error handling */
exit;
}
/* session okay */

But what will happen, if (e.g.) the database is down?
Means: What kind of error handling can or must be implemented within the
functions open, close, read, write, destroy and gc to get a stable
script? Of course, line [3] is not enough ...
Jul 13 '07 #1
1 1699
You can trigger a fatal error with trigger_error('Message',
E_USER_ERROR) or throw an exception. If your read function fails, that
should return false.

On Jul 13, 4:29 pm, Werner Elflein <em...@wernerelflein.dewrote:
Let open, close, read, write, destroy and gc be PHP functions to save
the superglobal array $_SESSION in a database.

I would like to use the following code:

[1] session_set_save_handler(open,close,read,write,gc) ;
[2] session_start();
[3] if(!isset($_SESSION))
[4] {
/* error handling */
exit;
}
/* session okay */

But what will happen, if (e.g.) the database is down?
Means: What kind of error handling can or must be implemented within the
functions open, close, read, write, destroy and gc to get a stable
script? Of course, line [3] is not enough ...

Jul 14 '07 #2

This thread has been closed and replies have been disabled. Please start a new discussion.

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