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If you are new to PHP or just need to refresh your skills, this is the place to start. This series of tutorials will give you the basic knowledge you will need to create a simple PHP website.

PHP is a reflective programming language originally designed for producing dynamic web pages.[1] PHP is used mainly in server-side scripting, but can be used from a command line interface or in standalone graphical applications. Textual User Interfaces can also be created using ncurses.

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dbx_connect

(PHP 4 >= 4.0.6, PHP 5 <= 5.0.4)

dbx_connect -- Open a connection/database

Description

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 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.

See Also

dbx_close()

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Another Useful functions:


function.dbx-connect | function.dbx-compare | function.dbx-close |


PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML. If you are new to PHP and want to get some idea of how it works, try the introductory tutorial. After that, check out the online manual, and the example archive sites and some of the other resources available in the links section.