[RESOLVED] Delete From Session?

Sayian

Im am building a delete script , for administrators to be able to delete a member off my website.

Now if that member is logged in , and a administrator deletes them ..

All is well deleteing them out of the database , thats easy ..

But how could i Delete the user's session , as wel .. "Logging them off"

quicknik

hmmm the easiest way would be to use a custom database driven session handler
have a look at :http://de.php.net/manual/en/function.session-set-save-handler.php
bye,
nikolas

Weedpacket

Aye; you'll need some way of matching session IDs to usernames. If you were using file-based sessions you'd need to read all of the session data files that currently exist, looking for any that have that username (in the appropriate field), and then delete those files. With databased sessions you can pair the session data directly against the username.

Sayian

Thanks WeedPacket

Ive looked into some php functions for this

it seems file() will read a file, and return an array with a key value pair for each line of the file.

Then i could just use in_array() to see if the username was in the array, and delete it.

But, how could i loop through all the session files in the /tmp directory?

Could someone maybe show me an example of how this could be done, Im trying!

Thanks

Weedpacket

Sayian wrote:
But, how could i loop through all the session files in the /tmp directory?

PHP has functions for reading through the files in a directory. [man]glob[/man] would be the easiest, letting you filter the session files from any other files that might be in there.

Sayian

Ok thanks for that advice, i got glob() working great.

Although, the session arrays its returning seem to be in a strange format from regular arrays.

Ive never gotten this deep into arrays before, so im learning.

From what i make of it, the session values are being stored, also with their datatype representation ...

example:

user_id|s:3:"166";username|s:12:"SS_Marvin";gender|s:6:"Male";c1|

im assuming the s stands for string, and the i stands for integer?

Im trying to get the username info from each array

Here is the code ive constructed so far

foreach (glob("/tmp/sess*") as $filename) {

$file = file($filename);

foreach($file as $sess_file) {

	print_r($sess_file);

}

}

the print_r is just so i could see what its returning, and its returning text like i pasted above.

Is their a php function to decode this text into normal output, maybe somthing i could use with in_array() to search for the username?

Or maybe an easier way?

Any comments are welcome, thank you.

Weedpacket

It's based on serialisation. If there is a built-in function to do it, it will be listed under the [man]session[/man] functions in the manual.

But it's a pretty simple format to parse. Explode by ';', the bit to the left of the "|" is the variable name, the bit to the right is the type (if it's a string then it's "s:length"), then a ":", then the value.

Sayian

Great, i think i have all the information to finish this code up.

Weedpacket, you have helped me greatly man, thanks for your time.