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Website Programming in PHP / MYSQL
dbx_connect
(PHP 4 >= 4.0.6, PHP 5 <= 5.0.5, PECL dbx:1.1.0)
dbx_connect — Open a connection/database
Description
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 #1 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.
