Bug #15220 Updated: unserialize() failed at offset X of X bytes
| From: | sander@php.net | Date: | Fri, 25 Jan 2002 16:54:04 +0000 |
| Subject: | Bug #15220 Updated: unserialize() failed at offset X of X bytes | ||
| References: | 1 | Groups: | php.dev |
| Request: | Send a blank email to php-dev+get-78125@lists.php.net to get a copy of this message | ||
ID: 15220
Updated by: sander
Reported By: jfl@eksperten.dk
Old Status: Open
Status: Feedback
Bug Type: Unknown/Other Function
Operating System: Linux
PHP Version: 4.1.1
New Comment:
Can you supply some (malicious) sample data (in- and output of
(un)serialize) along with a simple samplescript?
Previous Comments:
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[2002-01-25 05:36:03] jfl@eksperten.dk
I use this @ www.eksperten.dk
Let me know if I can help with anything !
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[2002-01-25 05:33:47] jfl@eksperten.dk
I have a function that stores MySQL result arrays or my own arrays in a
MySQL database.
Often I get an error like "unserialize() failed at offset 1717 of 3658
bytes".
I believe this is a bug in Php as it does not happen always.
My function :
function sql_cache ($query, $timeout = 90, $result = "") {
if ($timeout >= 0) {
$SQL = "SELECT result FROM sql_cache WHERE qkey = '".md5($query)."'
AND valid = 1";
if ($timeout) {
$SQL .= " AND timestamp >= ".(time() - $timeout);
}
$SQL .= " LIMIT 1";
if ($RS = mysql_query($SQL, db_conn)) {
if ($RSarray = mysql_fetch_row($RS)) {
mysql_free_result($RS);
$return = unserialize($RSarray[0]);
if (is_array($return)) {
return $return;
} elseif (is_string($return)) {
return $return;
} else {
//print(gettype($return));
return false;
}
}
}
} else {
$SQL = "REPLACE LOW_PRIORITY sql_cache SET qkey = '".md5($query)."',
result = '".serialize($result)."', timestamp = ".time().", query =
'".addslashes($query)."'";
mysql_unbuffered_query($SQL, db_conn);
}
return false;
}
My MySQL table :
CREATE TABLE sql_cache (
qkey varchar(32) NOT NULL default '',
valid tinyint(1) unsigned NOT NULL default '1',
timestamp int(10) unsigned NOT NULL default '0',
result blob NOT NULL,
query text NOT NULL,
PRIMARY KEY (qkey)
) TYPE=MyISAM;
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Edit this bug report at http://bugs.php.net/?id=15220&edit=1