Bug #46353 [Fbk->NoF]: string concatenation leaks memory when using execute

Edit report at https://bugs.php.net/bug.php?id=46353&edit=1 ID: 46353 Updated by: php-bugs@lists.php.net Reported by: anders at freeones dot com Summary: string concatenation leaks memory when using execute -Status: Feedback +Status: No Feedback Type: Bug Package: Scripting Engine problem Operating System: Linux 2.6.20-1.2320 PHP Version: 5.2.6 New Comment: No feedback was provided. The bug is being suspended because we assume that you are no longer experiencing the problem. If this is not the case and you are able to provide the information that was requested earlier, please do so and change the status of the bug back to "Open". Thank you. Previous Comments: ------------------------------------------------------------------------ [2010-11-02 17:33:20] felipe@php.net Please try using this snapshot: http://snaps.php.net/php5.3-latest.tar.gz For Windows: http://windows.php.net/snapshots/ ------------------------------------------------------------------------ [2010-08-18 12:31:07] andrey@php.net not a mysql thing, still no feedback ------------------------------------------------------------------------ [2008-11-03 01:00:04] php-bugs at lists dot php dot net No feedback was provided for this bug for over a week, so it is being suspended automatically. If you are able to provide the information that was originally requested, please do so and change the status of the bug back to "Open". ------------------------------------------------------------------------ [2008-10-26 11:12:34] jani@php.net Thank you for this bug report. To properly diagnose the problem, we need a short but complete example script to be able to reproduce this bug ourselves. A proper reproducing script starts with <?php and ends with ?>, is max. 10-20 lines long and does not require any external resources such as databases, etc. If the script requires a database to demonstrate the issue, please make sure it creates all necessary tables, stored procedures etc. Please avoid embedding huge scripts into the report. ------------------------------------------------------------------------ [2008-10-21 08:15:21] anders at freeones dot com 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 this bug report at https://bugs.php.net/bug.php?id=46353&edit=1