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Provide more information if writing session with custom save handler fails #7787
Description
Description
The following code:
<?php
class MySessionHandler implements SessionHandlerInterface, SessionUpdateTimestampHandlerInterface {
public function write($sessID, $sessData, $lock = false): bool {
if(...){
return false;
}
if(...){
return false;
}
return true;
}
public function updateTimestamp($sessID, $val){
return false;
}
}
$handler = new MySessionHandler();
session_set_save_handler($handler, true);
session_start();Resulted in this output:
session_write_close(): Failed to write session data using user defined save handler. (session.save_path: /var/lib/php)
But I expected this output instead:
Having this "fake" session handler, it is impossible to say where session write failed and find the cause. An installed error handler just reports
errorHandler::errorHandler called at [:]
PHP Version
php 8.0.14
Operating System
Mageia 8
Activity
nikic commentedon Dec 19, 2021
What would the desired additional information be? The name of the user defined session handler class?
Edit: If you are asking for PHP to somehow distinguish which of the "return false" in
SessionHandler::write()resulted in the failure, this is plainly impossible. You'd have to throw a notice from the session handler yourself if you wanted to achieve that.mokraemer commentedon Dec 19, 2021
I think the class name and the function called (updateTimestamp or write) would help to see which of those two functions failed.
[-]session_save_handler incomplete stack trace[/-][+]Provide more information if writing session with custom save handler fails[/+]