dbx_connect
(PHP 4 >= 4.0.6, PHP 5 < 5.1.0, PECL dbx >= 1.1.0)
dbx_connect — Open a connection/database
说明
$module ,
string $host ,
string $database ,
string $username ,
string $password [,
int $persistent ] ) :
object
Opens a connection to a database.
参数
-
module -
The
moduleparameter 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_MYSQLor "mysql" -
DBX_ODBCor "odbc" -
DBX_PGSQLor "pgsql" -
DBX_MSSQLor "mssql" -
DBX_FBSQLor "fbsql" -
DBX_SYBASECTor "sybase_ct" -
DBX_OCI8or "oci8" -
DBX_SQLITEor "sqlite"
-
-
host -
The SQL server host
-
database -
The database name
-
username -
The username
-
password -
The password
-
persistent -
The
persistentparameter can be set toDBX_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.
返回值
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.
更新日志
| 版本 | 说明 |
|---|---|
| 5.0.0 | Introduced DBX_SQLITE. |
| 4.3.0 | Introduced DBX_OCI8. |
| 4.2.0 | Introduced DBX_SYBASECT. |
| 4.1.0 | Introduced DBX_FBSQL. |
范例
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);
?>
注释
Note:
Always refer to the module-specific documentation as well.
