Delicious Bookmark this on Delicious Share on Facebook SlashdotSlashdot It! Digg! Digg



PHP : Function Reference : dbx Functions : dbx_connect

dbx_connect

Open a connection/database (PHP 4 >= 4.0.6, PHP 5 <= 5.0.5, PECL dbx:1.1.0)
object dbx_connect ( mixed module, string host, string database, string username, string password [, int persistent] )

Opens a connection to a database.

Parameters

module

The module parameter can be either a string or a constant, though the latter form is preferred. The possible values are given below, but keep in mind that they only work if the module is actually loaded.

  • DBX_MYSQL or "mysql"
  • DBX_ODBC or "odbc"
  • DBX_PGSQL or "pgsql"
  • DBX_MSSQL or "mssql"
  • DBX_FBSQL or "fbsql" (available from PHP 4.1.0)
  • DBX_SYBASECT or "sybase_ct" (available from PHP 4.2.0)
  • DBX_OCI8 or "oci8" (available from PHP 4.3.0)
  • DBX_SQLITE or "sqlite" (PHP 5)
host

The SQL server host

database

The database name

username

The username

password

The password

persistent

The persistent parameter can be set to DBX_PERSISTENT, if so, a persistent connection will be created.

The host, database, username and password parameters are expected, but not always used depending on the connect functions for the abstracted module.

Return Values

Returns an object on success, FALSE on error. If a connection has been made but the database could not be selected, the connection is closed and FALSE is returned.

The returned object has three properties:

database
It is the name of the currently selected database.
handle

It is a valid handle for the connected database, and as such it can be used in module-specific functions (if required).

<?php
$link
= dbx_connect(DBX_MYSQL, "localhost", "db", "username", "password");
mysql_close($link->handle); // dbx_close($link) would be better here
?>
module
It is used internally by dbx only, and is actually the module number mentioned above.

Examples

Example 489. dbx_connect() example

<?php
$link
= dbx_connect(DBX_ODBC, "", "db", "username", "password", DBX_PERSISTENT)
   or die(
"Could not connect");

echo
"Connected successfully";
dbx_close($link);
?>


Notes

Note:

Always refer to the module-specific documentation as well.

See Also
dbx_close()

Code Examples / Notes » dbx_connect

mboeren

The pgsql connecting as nobody if you don't supply a password issue has been solved in CVS.

bdkr

The advantage that this has over Pear, Adob, and even Eclipse is speed. As some one put elsewhere,
"Yes, there is an advantage: Speed!
ext/dbx is written in C and has to be compiled into PHP. It's just faster then the PEAR classes."
Cheers,
BDKR


editor

Pear:DB ist a great Idea, but it`s heavy and slower. I`ve tested dbx and Pear:DB with MySQL 4.0.23_Debian-1-log.
With Pear the Script used around 500 KiB of Memory and needed about 0.15s to 0.25s to complete.
With dbx it used around 80 KiB of Memory and needed around 0.09s to 0.11s to complete!
For ME, dbx is absolutly the best abstraktion around! :-)
Nice Work!!
Sascha Plumhoff


jeremy

Pear::DB seems like a better idea than this.  See http://pear.php.net

jon moss

I have been using dbx for a product at work and the need to use SQLite as a database popped up. However, I couldn't find any references to using it with dbx other than that you could and since SQLite doesn't seem to do the username password thing I was a little confused as to how to use it in dbx.
With a little research it seems that when using dbx_connect you only need to fill in the module name ('DBX_SQLITE') and the database (the file name for the database!) to get it working. e.g.
$link = dbx_connect(DBX_SQLITE, "", "some.db", "", "");
thought someone might find it useful, especially since it no longer required additional dll's in version 5.x


davidbullock

Currently to connect to the PostgreSQL backend, you have to supply both a username, and a password or the dbx pgsql module attempts to connect as "nobody".

webmaster

ADOdb seems to be the best db-abstraction library in PHP. It's very fast also. You can get it from ADOdb homepage @ http://php.weblogs.com/adodb/

Change Language


Follow Navioo On Twitter
dbx_close
dbx_compare
dbx_connect
dbx_error
dbx_escape_string
dbx_fetch_row
dbx_query
dbx_sort
eXTReMe Tracker