From: anders at freeones dot com
Operating system: Linux 2.6.20-1.2320
PHP version: 5.2.6
PHP Bug Type: MySQL related
Bug description: string cocatination leaking memeory when using execute
Description:
------------
I run some code 5 million itteration yesterday, today I change my string
building to use single quotes and the dot operator. That version was able
to do aprox 25k itterations then the script died due memory leak.
Reproduce code:
---------------
# Makign a string like this leaks NOT memory
# $lInsert = "Insert into {$this->mTable}
(datetime,entity_id,entity_type,domain,country,location,raws,uniques)" .
# " values
('{$this->getDateTime()}',{$this->getEntityId()},{$this->getEntityType()},{$this->getDomain()},"
.
#
"{$this->getCountry()},{$this->getLocation()},{$this->getRaws()},{$this->getUniques()});";
# Making a string liek this leaks memory when doign execute
$lInsert = 'Insert into '.$this->mTable.'
(datetime,entity_id,entity_type,domain,country,location,raws,uniques)' .
' values
("'.$this->getDateTime().'",'.$this->getEntityId().','.$this->getEntityType().','.$this->getDomain().','
.$this->getCountry().','.$this->getLocation().','.$this->getRaws().','.$this->getUniques().');';
# $lInsert = "Insert into {$this->mTable}
(datetime,entity_id,entity_type,domain,country,location,raws,uniques)" .
# " values
('{$lTimeStamp}',{$lEntityId},{$lEntityType},{$lDomain},{$lCountry},{$lLocation},{$lRaws},{$lUniques})";
#
print memory_get_usage()."\n";
$lStatement =& $this->mDbh->prepare($lInsert);
if (MDB2::isError($lStatement)){
error_log($lStatement->getMessage().';query:'.$lInsert.'
'.$lStatement->userinfo);
$lResult = false;
} else {
$lResult =& $lStatement->execute();
$lStatement->free();
}
Expected result:
----------------
See code comments
Actual result:
--------------
see code comments
--
Edit bug report at http://bugs.php.net/?id=46353&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=46353&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=46353&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=46353&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=46353&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=46353&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=46353&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=46353&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=46353&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=46353&r=support
Expected behavior: http://bugs.php.net/fix.php?id=46353&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=46353&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=46353&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=46353&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=46353&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=46353&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=46353&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=46353&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=46353&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=46353&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=46353&r=mysqlcfg
