php session_start general error handling

Question

I'm looking for a general way to handle session_start errors, not a way to handle one specific error. There are numerous errors which can happen, such as the session directory being full, which cause a fatal error. I want a way to trap those errors and handle them cleanly, without having to write custom handlers for each possibility.

Something like this (but not this as it doesn't work):

try{
    session_start();
}catch(Exception  $e){
    echo $e->getMessage();
}

All help appreciated, thanks in advance.

Look up set_error_handler

Anigel
– Anigel

2013-05-15 14:53:35 +00:00
Commented May 15, 2013 at 14:53 — Anigel
– Anigel, Commented May 15, 2013 at 14:53
See also this answer on error handling in general.

Ja͢ck
– Ja͢ck

2013-05-15 14:56:33 +00:00
Commented May 15, 2013 at 14:56 — Ja͢ck
– Ja͢ck, Commented May 15, 2013 at 14:56

chiborg · Accepted Answer · 2013-09-02 12:57:44Z

5

The regular PHP session functions don't throw exceptions but trigger errors. Try writing an error handler function and setting the error handler before calling session_start.

function session_error_handling_function($code, $msg, $file, $line) {
    // your handling code here
}

set_error_handler('session_error_handling_function');
session_start();
restore_error_handler();

However, this is just for capturing the session errors. A better way would be to create a general error handler that creates exceptions from errors and surround code parts that may throw errors with try ... catch blocks.

edited Sep 2, 2013 at 12:57

answered May 15, 2013 at 14:53

chiborg

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