Re: [PHP-DB] Memory
Am Mi, den 27.04.2005 schrieb [FOTOList.com] Suporte um 15:46: > Hi, > > When I get something from database, using this function: pg_query > (postgresql) or mysql_query and after put this result in somes > variables, Am I using double memory to same data or this new variable > point to variable with db result? A normal mysql_query or mysqli_query function allocates a char** pointer (in libmysql) for all data in resultset until it's freed via mysql_free_result. If you have to retrieve a large amount of data (and you don't use nested selects) you should use mysql_unbuffered_query instead. This method can be also faster. /Georg -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
Re: [PHP-DB] Memory. .
[FOTOList.com] Suporte wrote: Hi, When I get something from database, using this function: pg_query (postgresql) or mysql_query and after put this result in somes variables, Am I using double memory to same data or this new variable point to variable with db result? The postgresql or mysql process is storing the resultset in memory, php is passed the address of the resultset. When you actually pull the individual rows out of the resultset into PHP and assign them a variable, you are storing a second copy of that. If you pull out all the rows and store them in an array in PHP, you then have two copies of your entire data. If you need to pull your whole set of results out into an array, you can immediately use pg_free_result() or mysql_free_result() afterwards to free up the copy using memory in the database. cheers, -- - Martin Norland, Sys Admin / Database / Web Developer, International Outreach x3257 The opinion(s) contained within this email do not necessarily represent those of St. Jude Children's Research Hospital. -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP-DB] Memory
Hi, When I get something from database, using this function: pg_query (postgresql) or mysql_query and after put this result in somes variables, Am I using double memory to same data or this new variable point to variable with db result? Gustavo Paixão -- PHP Database Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
[PHP-DB] memory leak???
Hi, I have an error when try to query from 2 database (m$ sql). Fatal error: Allowed memory size of 8388608 bytes exhausted (tried to allocate 29 bytes) when I check my server memory it have free for a lot total used free sharedbuffers cached Mem:126516 110996 15520 38864 38212 42192 -/+ buffers/cache: 30592 95924 Swap:96348 4848 91500 How could I fixed this problem?? SF
[PHP-DB] Memory Issues with MySQL & 4.0.6
Hi. PHP crashes every time we run a certain batch of reports since we upgraded from 4.0.4pl1 to 4.0.6. The report is ridiculously complex and requires a boat-load of database queries. They ran very well on the previous versions of PHP. Information: --The script tanks after the 34th query, at which point it begins displaying: "Supplied argument is not a valid MySQL result resource." --We have tried the script using: *one connection for the entire script (mysql_pconnect) *recalling mysql_pconnect() before every query without mysql_close() *new connections for every query (mysql_connect...mysql_close) --Same outcome with Mysql versions 3.23.39, 3.23.38 and 3.23.28 --Works perfectly well in PHP 4.04pl1, but not at all 4.06 --Debug log repeatedly contains two messages: FATAL: erealloc(): Unable to allocate 1515870836 bytes [Wed Jul 11 09:12:17 2001] [notice] child pid 16719 exit signal Segmentation fault (11) - --- ./zend_execute.c(358) : Block 0x083FFD78 status: zend_variables.c(62) : Actual location (location was relayed) Beginning: OK (allocated on zend_API.c:379, 10 bytes) End: Overflown (magic=0x2A8FCC82 instead of 0x2A8FCC84) 1 byte(s) overflown - --- I have tried lots of troubleshooting approaches, far too many to mention now. I have also searched the mailing lists and bug reports and have read documents all over the place, all to no avail. If I am being an idiot here, let me know and I'll go away. Thank you for your time and help, Chris Chew -- PHP Database 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]
