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Database Abstraction Layer for PHP

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v5:database:pdo_new

PDO (new)

This is still under development. Feedback is welcome, just add your comments in the pull request.

Specification
Driver Namepdo
Data Providerpdo
StatusActive1)
WindowsYes
UnixYes
ADOdb V5Yes
ADOdb V6Yes

Description

This driver supports connections using the standardized PHP Data Objects.This page refers to ADOdb release 5.23.0 and higher. For previous versions of ADOdb, see the Previous Version Of This Page.

Except for the pdo_odbc driver, all PDO drivers include support for full data dictionary functions (e.g. createTableSql(),addIndexSql(), etc.)


Quick Upgrade Notes

  • Instead of newAdoConnection('pdo'), use newAdoConnection('pdo\driver')
  • Passing a DSN statement to newAdoConnection() is no longer supported
  • Do not start the DSN statement with the driver name

Supported drivers

PHP DriverDescriptionADOdb Connector
pdo_firebirdFirebirdfirebird
pdo_ibmIBM DB2ibm
pdo_informixIBM Informixinformix
pdo_mysqlMySQLmysql
pdo_ociOracleoci
pdo_odbcGeneric ODBCodbc
pdo_pgsqlPostgresqlpgsql
pdo_sqliteSQLitesqlite
pdo_sqlsrvMicrosoft SQL Serversqlsrv

Unsupported Drivers

  • pdo_mssql
  • pdo_dblib
  • pdo_cubrid

Note that the pdo driver cannot be used on its own. It is a technical component that is used internally by the above drivers.

Establishing A Connection

To establish a connection:

  1. The PDO database type must be specified in the ADONewConnection() function call
  2. The DSN style of connection must be used in the connect() statement, e.g. to connect to a MySQL database:
include_once 'adodb/adodb.inc.php';
 
$db = ADOnewConnection('pdo\mysql');
 
$user     = 'pdo-user';
$password = 'pdo-pass';
$dsnString= 'host=localhost;dbname=employees;charset=utf8mb4';
$db->connect($dsnString,$user,$password);

Preferred Drivers

Using ADOdb effectively eliminates the need to use the PHP PDO driver as it hides the PHP level command:

  • It provides true database abstraction, for example, the ADOdb method selectLimit() provides a true abstraction of the row limiting and offset of all databases. With PDO, you still need to provide the database specific syntax.
  • Unless otherwise described below, using native drivers (listed below) provide better functionality, as well as performance, than the equivalent PDO driver. This is true at both the ADOdb and PHP level

Setting Construction Parameters

Certain attributes need to be passed to the PDO Constructor, for example, changing the error mode. To facilitate this, a PDO specific settable array ADOConnection::pdoParameters is provided:

$db = newAdoConnection('pdo\firebird');
 
$db->pdoParameters = [
\PDO::ATTR_ERRMODE => \PDO::ERRMODE_EXCEPTION
];
 
$dsnString= 'host=localhost;dbname=employee.fdb';
$db->connect($dsnString,"SYSDBA", "password");

The PDO setAttribute function

For parameters that are set after the class is instantiated, The PDO::setAttribute() method can be populated using setConnectionParameter().

Individual Driver Status

Firebird

PDO Name

pdo_firebird

Preferred Driver

Firebird/Interbase Driver


Sample Connection String

include 'adodb-dir/adodb.inc.php';
$db = ADOnewConnection('pdo\firebird');
 
$dsn  = 'dbname=employee.fdb;hostname=localhost';
$user = 'SYSDBA';
$pass = 'master-key';
 
$db->connect($dsn,$user,$pass);

IBM DB2

PDO Name

pdo_ibm

Preferred Driver

DB2

  • This driver requires the installation of the IBM DB2 client

Sample Connection String

include 'adodb-dir/adodb.inc.php';
$db   = ADOnewConnection('pdo\ibm');
 
$dsn = 'hostname=192.168.86.141;protocol=tcpip;port=50000;';
$dsn.= 'database=SAMPLE;uid=db2inst1;pwd=somepassword';
$user = '';
$password = ''
 
$db->connect($dsn,$user,$password);

IBM Informix

PDO Name

pdo_informix

  • There is no native mode driver for IBM Informix Connections
  • This driver requires the installation of the IBM Informix Client
  • Supports Informix Databases version 12+

Sample Connection String

include 'adodb-dir/adodb.inc.php';
$db   = ADOnewConnection('pdo\informix');
 
$dsn = 'hostname=192.168.86.141;service=ol_informix1410;database=stores_demo;';
$dsn.= 'server=ol_informix1410;protocol=onsoctcp;EnableScrollableCursors=1;';
$user = 'ix-user';
$password = 'ix-password'
 
$db->connect($dsn,$user,$password);

MySQL

PDO Name

pdo_mysql

Preferred Driver

mysqli


Sample Connection String

include 'adodb-dir/adodb.inc.php';
$db   = ADOnewConnection('pdo\mysql');
 
$dsn  = 'hostname=127.0.0.1;database=employees;'
$user = 'user';
$password = 'password'
 
$db->connect($dsn,$user,$password);

ODBC

PDO Name

pdo_odbc

  • This is a simple driver for connection to any ODBC compliant database.
  • It is useful for reading and simple writes to data sources such as Microsoft Access, Excel and Google Sheets
  • There is no support for Data Dictionary functions or database specific items such as sequences.

Sample Connection String

include 'adodb-dir/adodb.inc.php';
$db   = ADOnewConnection('pdo\odbc');
 
/*
* Points directly at the DSN configuration in Windows Control Panel
*/
$dsn  = 'MYDSN'
 
$db->connect($dsn);

Oracle

PDO Name

pdo_oci

Preferred Driver

oci8

  • There is no support for the complex binding features available in the Native Driver
  • This driver requires installation of an Oracle client, such as InstantClient

Sample Connection String

If you are using the instantclient, and there is no tsnames.ora defined, you can define a connection like this

$db = newAdoConnection('pdo\oci');
 
//Connecting to Oracle Express on 192.168.86.86
$tns = " 
(DESCRIPTION =
    (ADDRESS_LIST =
      (ADDRESS = (PROTOCOL = TCP)(HOST = 192.168.86.86)(PORT = 1521))
    )
    (CONNECT_DATA =
      (SERVICE_NAME = XEPDB1)
    )
  )
";
$dsnString="dbname=$tns";
$db->connect($dsnString,$userName,$password);

Postgres

PDO Name

pdo_pgsql

Preferred Driver

postgres9


Sample Connection String

$db = newAdoConnection('pdo\pgsql');
 
$dsn  = 'pgsql:host=192.168.0.212;dbname=dvdrental';
$user = 'someuser';
$pass = 'somepass';
 
$db->connect($dsn,$user,$pass);

SQLite

PDO Name

pdo_sqlite

Preferred Driver

SQLite Database


Sample Connection String

include 'adodb-dir/adodb.inc.php';
$db = ADOnewConnection('pdo\sqlite');
 
$dsn  = '/home/sqlite/adodb-sqlite.db';
$user = 'root';
 
$db->connect($dsn,$user);

SQL Server

PDO Name

pdo_sqlsrv

Preferred Driver

Native Mode Driver

  • This driver requires the installation of the Microsoft native client library, as well as the Microsoft SQL Server PDO drivers for PHP
  • Dates are always returned as strings
  • This driver can also be used on Linux platforms, beginning with PHP Version 7. The program relies on the Microsoft drivers for Linux. For more information, see the mssqlnative driver
  • You cannot change the character set in the driver. This is a limitation of the PDO driver, not ADOdb

Sample Connection String

include 'adodb-dir/adodb.inc.php';
$db = ADOnewConnection('pdo\sqlsrv');
 
$user = 'user';
$pass = 'password';
$dsn  ='server=SERVER\SQLEXPRESS;database=NORTHWND;';
 
$db->connect($dsn,$user,$password);

1)
This driver is supported by ADOdb project members
v5/database/pdo_new.txt · Last modified: 2022/04/03 12:26 by dregad