mssql_num_rows
Please note that mssql_pconnect creates a connection for the pool for *each process*. If you have "ThreadsPerChild" set to 50 in apache, and mssql.max_procs set to 25 in php, then eventually you will get mssql_pconnect failing to give you a connection to the database. This has stumped me for quite a while, and the answer finally presented itself thanks to the people in #php.
mssql_pconnect
(PHP 4, PHP 5, PECL odbtp:1.1.1-1.1.4)
mssql_pconnect — abre una conexión persistenete con MS SQL
Descripción
int mssql_pconnect
( string $servername
, string $username
, string $password
)
Devuelve: Un identificador persistente postivo si no hay error, o FALSE si se produce alguno
mssql_pconnect() funciona de la misma forma que mssql_connect() aunque con dos grandes diferencias.
La primera es que cuando intenta conectar, la función intentará encontrar un enlace (persistente) que ya esté abierto en el mismo ordenador, nombre de usuario y contrase¤a. Si lo encuentra, la funcion devolverá el identificador de esta en vez de abrir una nueva conexión.
Y la segunda, la conexión con el servidor no se cerrará cuando finalice la ejecución del script. En vez de esto, el enlace permanecerá abierto para un uso futuro. (mssql_close() no cerrará enlaces establecidos por mssql_pconnect()).
Por consiguiente, este tipo de enlace es llamado 'persistente'.
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User Contributed Notesmssql_pconnect
php at burntpopcorn dot net
11-Mar-2004 03:17
11-Mar-2004 03:17
dave at dontspamme dot com
10-Feb-2004 11:32
10-Feb-2004 11:32
If you are running PHP/Apache combination on a Windows machine that is part of a domain, using NT Authentication to connect to a MS SQL Server, you must to do the following things:
1) Turn NT Authentication On (under MSSQL in php.ini)
2) Configure the Apache service to run as the user that is authorized to access the MS SQL server.
Hope this helps save someone the time that it took me to track down!
m1tk4 at hotmail dot com
17-Jul-2002 06:08
17-Jul-2002 06:08
Be careful with pconnect!
Platform: RH Linux 7.3, PHP 4.2.1. FreeTDS.
pconnect does give you better time than connect (about 0.25-0.4 seconds gain) BUT:
- occasionally, I've experienced "quirks" when fetch() would randomly return empty recordsets from stored procedurest that can_not return empty recordsets by definition.
- if you restart MSSQL server while some of the connections did not time out, next pconnect() will not establish a new connection! It will return an old one, so next time you do execute() or query() your script will just _hang_ until timeouted by Apache.
All of the above I believe are FreeTDS problems, not PHP. I wonder if somebody with PHP+Sybase lib got pconnect to work.
php at rawhide dot cjb dot net
12-Jul-2001 03:18
12-Jul-2001 03:18
One should not that persistent connections are not persistent under a CGI interface.