Docs For Class DB

[line 432]
Database independent query interface

The main "DB" class is simply a container class with some static methods for creating DB objects as well as some utility functions common to all parts of DB.

The object model of DB is as follows (indentation means inheritance):

 DB           The main DB class.  This is simply a utility class
              with some "static" methods for creating DB objects as
              well as common utility functions for other DB classes.

 DB_common    The base for each DB implementation.  Provides default
 |            implementations (in OO lingo virtual methods) for
 |            the actual DB implementations as well as a bunch of
 |            query utility functions.
 |
 +-DB_mysql   The DB implementation for MySQL.  Inherits DB_common.
              When calling DB::factory or DB::connect for MySQL
              connections, the object returned is an instance of this
              class.

Version: Release: 1.7.9
Link: http://pear.php.net/package/DB
License: PHP License 3.0
Copyright: 1997-2005 The PHP Group
Author: Tomas V.V.Cox <cox@idecnet.com>
Author: Stig Bakken <ssb@php.net>
Author: Daniel Convissor <danielc@php.net>

apiVersion [line 577]

string apiVersion(
)

Return the DB API version

Return: the DB API version number

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connect [line 518]

object a &connect(
mixed
$dsn, [array
$options = array()])

Create a new DB object including a connection to the specified database

Example 1.

 require_once 'DB.php';

 
 $dsn = 'pgsql://user:password@host/database';
 $options = array(
     'debug'       => 2,
     'portability' => DB_PORTABILITY_ALL,
 );
 
 $db =& DB::connect($dsn, $options);
 if (PEAR::isError($db)) {
     die($db->getMessage());
 }

Return: new DB object. A DB_Error object on failure.
Uses: DB_dbase::connect(), - DB_fbsql::connect(), DB_ibase::connect(), DB_ifx::connect(), DB_msql::connect(), DB_mssql::connect(), DB_mysql::connect(), DB_mysqli::connect(), DB_oci8::connect(), DB_odbc::connect(), DB_pgsql::connect(), DB_sqlite::connect(), DB_sybase::connect()
Uses: DB::parseDSN(), - DB_common::setOption(), PEAR::isError()

Parameters:

mixed	`$dsn`	—	the string "data source name" or array in the format returned by DB::parseDSN()
array	`$options`	—	an associative array of option names and values

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errorMessage [line 652]

string errorMessage(
integer
$value)

Return a textual error message for a DB error code

Return: the error message or false if the error code was not recognized

Parameters:

integer $value — the DB error code

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factory [line 447]

object a &factory(
string
$type, [array
$options = false])

Create a new DB object for the specified database type but don't connect to the database

Return: new DB object. A DB_Error object on failure.
See: DB_common::setOption()

Parameters:

string	`$type`	—	the database type (eg "mysql")
array	`$options`	—	an associative array of option names and values

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getDSNString [line 862]

string getDSNString(
array|string
$dsn, boolean
$hidePassword)

Returns the given DSN in a string format suitable for output.

Parameters:

array\|string	`$dsn`	—	the DSN to parse and format
boolean	`$hidePassword`	—	true to hide the password, false to include it

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isConnection [line 607]

bool isConnection(
mixed
$value)

Determines if a value is a DB_<driver> object

Return: whether $value is a DB_<driver> object

Parameters:

mixed $value — the value to test

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isError [line 592]

bool isError(
mixed
$value)

Determines if a variable is a DB_Error object

Return: whether $value is DB_Error object

Parameters:

mixed $value — the variable to check

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isManip [line 628]

boolean isManip(
string
$query)

Tell whether a query is a data manipulation or data definition query

Examples of data manipulation queries are INSERT, UPDATE and DELETE. Examples of data definition queries are CREATE, DROP, ALTER, GRANT, REVOKE.

Return: whether $query is a data manipulation query

Parameters:

string $query — the query

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parseDSN [line 733]

array parseDSN(
string
$dsn)

Parse a data source name

Additional keys can be added by appending a URI query string to the end of the DSN.

The format of the supplied DSN is in its fullest form:

Most variations are allowed:

  phptype://username:password@protocol+hostspec:110//usr/db_file.db?mode=0644

    phptype://username:password@hostspec/database_name
    phptype://username:password@hostspec
    phptype://username@hostspec
    phptype://hostspec/database
    phptype://hostspec
    phptype(dbsyntax)
  phptype

Return: an associative array with the following keys:
- phptype: Database backend used in PHP (mysql, odbc etc.)
- dbsyntax: Database used with regards to SQL syntax etc.
- protocol: Communication protocol to use (tcp, unix etc.)
- hostspec: Host specification (hostname[:port])
- database: Database to use on the DBMS server
- username: User name for login
- password: Password for login

Parameters:

string $dsn — Data Source Name to be parsed

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Class: DB

Class Overview

Author(s):

Version:

Copyright:

Methods

Inherited Variables

Inherited Methods

Class Details

Method Detail

apiVersion [line 577]

connect [line 518]

Parameters:

errorMessage [line 652]

Parameters:

factory [line 447]

Parameters:

getDSNString [line 862]

Parameters:

isConnection [line 607]

Parameters:

isError [line 592]

Parameters:

isManip [line 628]

Parameters:

parseDSN [line 733]

Parameters: