My original e-mail, unanswered, is referenced below. I am in serious
need of HELP.
To prevent the $SESSION variable from getting set to a boolean, I
wrote the following loop with the idea that if the error happened
in unserializing the data in the database, I would simply query the
database again, and unserialize the data anew:
while(gettype($SESSION)<>"array")
{
$sessionError++;
$select=new dbLOCAL;
$query="SELECT data FROM sessions WHERE id='".$sessid."'";
$select->query($query);
$select->next_record();
$SESSION=unserialize($select->Record["data"]);
echo $select->Record["data"];
echo "<br>";
echo gettype($SESSION);
echo "<br>";
}
$select is obviously an object. The next_record() method uses the
mysql_fetch_array() function to get put the data into the Record
property. I added the echo statements to see what was happening if
and when the loop executed. Well, it eventually did and I had to
physically terminate the script in my browser as the conditional
for the loop never evaluated TRUE. Echoed out to my browser was
the following:
a:2:{s:4:\"USER\";a:15:{s:8:\"loggedIn\";i:1;s:7:\"user_id\";s:1:\"1\";s:5:\
"admin\";s:3:\"Yes\";s:10:\"contact_id\";s:1:\"1\";s:5:\"first\";s:2:\"AA\";
s:4:\"last\";s:8:\"Aaaaaaaa\";s:7:\"company\";s:3:\"ABC\";s:6:\"street\";s:1
8:\"8158 AAAAAA Avenue\";s:4:\"city\";s:11:\"Los
Angeles\";s:5:\"state\";s:1:\"5\";s:7:\"zipcode\";s:5:\"00000\";s:7:\"countr
y\";s:13:\"United States\";s:5:\"phone\";s:14:\"(000)
000-0000\";s:3:\"fax\";s:0:\"\";s:5:\"email\";s:13:\"[EMAIL PROTECTED]\";}s:7:\"
CONTACT\";a:1:{i:1;a:11:{s:5:\"first\";s:2:\"AA\";s:4:\"last\";s:8:\"Aaaaaaa
a\";s:7:\"company\";s:3:\"ABC\";s:6:\"street\";s:18:\"8158 AAAAAA
Avenue\";s:4:\"city\";s:11:\"Los
Angeles\";s:5:\"state\";s:1:\"5\";s:7:\"zipcode\";s:5:\"00000\";s:7:\"countr
y\";s:13:\"United States\";s:5:\"phone\";s:14:\"(000)
000-0000\";s:3:\"fax\";s:0:\"\";s:5:\"email\";s:13:\"[EMAIL PROTECTED]\";}}}
boolean
a:2:{s:4:\"USER\";a:15:{s:8:\"loggedIn\";i:1;s:7:\"user_id\";s:1:\"1\";s:5:\
"admin\";s:3:\"Yes\";s:10:\"contact_id\";s:1:\"1\";s:5:\"first\";s:2:\"AA\";
s:4:\"last\";s:8:\"Aaaaaaaa\";s:7:\"company\";s:3:\"ABC\";s:6:\"street\";s:1
8:\"8158 AAAAAA Avenue\";s:4:\"city\";s:11:\"Los
Angeles\";s:5:\"state\";s:1:\"5\";s:7:\"zipcode\";s:5:\"00000\";s:7:\"countr
y\";s:13:\"United States\";s:5:\"phone\";s:14:\"(000)
000-0000\";s:3:\"fax\";s:0:\"\";s:5:\"email\";s:13:\"[EMAIL PROTECTED]\";}s:7:\"
CONTACT\";a:1:{i:1;a:11:{s:5:\"first\";s:2:\"AA\";s:4:\"last\";s:8:\"Aaaaaaa
a\";s:7:\"company\";s:3:\"ABC\";s:6:\"street\";s:18:\"8158 AAAAAA
Avenue\";s:4:\"city\";s:11:\"Los
Angeles\";s:5:\"state\";s:1:\"5\";s:7:\"zipcode\";s:5:\"00000\";s:7:\"countr
y\";s:13:\"United States\";s:5:\"phone\";s:14:\"(000)
000-0000\";s:3:\"fax\";s:0:\"\";s:5:\"email\";s:13:\"[EMAIL PROTECTED]\";}}}
boolean
AND SO ON...
Can anyone please tell me why this is happening and what I can
do to correct it??? Thank you,
Ted
> -----Original Message-----
> From: TR Henigson [mailto:[EMAIL PROTECTED]]
> Sent: Friday, January 19, 2001 9:13 AM
> To: T. R. Henigson
> Subject: FW: unserialize() unexpectedly returns a boolean
>
>
> I built an e-commerce application using PHP4 session management.
> I store all data in an array, $SESSION, which I register with the
> session. Most of the time, $SESSION is restored as expected on
> the loading of a new page. Every now and then, however, $SESSION
> is restored as a boolean variable with value 0. All of the
> contents of the original array are, of course, lost. Have I
> encountered a known problem? I attempted to circumvent the issue
> by writing my own session management logic the implementation of
> which follows:
>
> I store a serialized representation of the array $SESSION with
> serialize() in a MySQL database indexed by the session id. On a
> page load, I query the database and unserialize the data with
> unserialize() and thus, $SESSION is restored. At the end of the
> page, I serialize $SESSION again and write it to the database.
> I ultimately experienced the same problem with my code where
> $SESSION was indiscriminately set to a boolean of value 0. This
> error is not reproducible in any predictable way. In my custom
> session management, I was however able to implement debugging
> logic that provides the following information:
>
> PHP is faithfully retrieving the serialized session data from the
> MySQL database. The unserialize() function seems to be the
> problem. Every so often, it results in the boolean variable
> despite the fact that the serialized data it operates on
> represents an array. For example, I determined from my debugging
> log (physical data has been altered for privacy):
>
> 1. raw data extracted from database and stored into $rawData:
> a:2:{s:4:"USER";a:15:{s:8:"loggedIn";i:1;s:7:"user_id";s:1:"1";
> s:5 :"admin";s :3:"Yes";s:10:"contact_id";s:1:"1";s:5:"first";s:
> 4:"John";s:4:"las t";s:3:"Do e";s:7:"company";s:3:"ABC";s:6:
> "street";s:18:"#### XXXXXX Avenue";s:4:"city";s:11:"Los Angeles"
> ;s:5:"state";s:1:"5";s:7:"zipcode";s:5:"######";s:7:"country";s:
> 13:"United States";s:5:"phone";s:14:"(323) 555-5555";s:3:"fax";
> s:0:"";s:5:"email";s:13:"[EMAIL PROTECTED]";}s:7:" CONTACT";a :1:{i
> :1;a:11:{s:5:"first";s:4:"John";s:4:"last";s:3:"Doe";s:7:"company"
> ;s:3: "ABC";s:6:"street";s:18:"#### XXXXXXX Avenue";s:4:"city"
> ;s:11:"Los Angeles";s:5:"state";s:1:"5";s:7:"zipcode";s:5:"#####"
> ;s:7:"country";s:13:"United States";s:5:"phone";s:14:"(323)
> 555-5555";s:3:"fax";s:0:"";s:5:"email";s:13:"[EMAIL PROTECTED]";}}}
>
> 2. then raw data is unserialized into session variable $SESSION=
> unserialize($rawData)
>
> 3. session variable is immediately typed with gettype($SESSION)
> and it's a boolean As I said before, this happens only irregularly.
> Most of the time, gettype() properly determines $SESSION is an
> array which, when examined, contains the unserialized data from
> the database. Every now and then, though, it's a boolean with a
> value of 0. So I guess my first question is does anyone know what
> is going on here? Second, does native PHP4 session management use
> the unserialize() function. And third, is unserialize() broken?
>
> Ted Henigson
--
PHP General Mailing List (http://www.php.net/)
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
To contact the list administrators, e-mail: [EMAIL PROTECTED]
