ADOdb

Database Abstraction Layer for PHP

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v5:database:pdo [2020/01/13 13:09] – Move tag to bottom dregadv5:database:pdo [2022/02/11 12:01] – [Description] move info about pdo driver usage to wrap dregad
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 ===== Description ===== ===== Description =====
-This driver supports connections using the standardized [[http://php.net/manual/en/book.pdo.php|PHP Data Objects]] connection. The ''pdo'' driver itself cannot be used, it must be used with one of the supported drivers:+ 
 +This driver supports connections using the standardized [[http://php.net/manual/en/book.pdo.php|PHP Data Objects]].  
 + 
 +Supported drivers:
  
 ^PHP Driver^Description^ADOdb Connector^ ^PHP Driver^Description^ADOdb Connector^
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 |pdo_sqlsrv|SQL Server using Windows Native Client|sqlsrv| |pdo_sqlsrv|SQL Server using Windows Native Client|sqlsrv|
    
 +<WRAP important>
 +Note that the //pdo// driver cannot be used on its own. It is a technical component that is used internally by the above drivers. 
 +</WRAP>
 +
 +
 ===== Establishing A Connection ===== ===== Establishing A Connection =====
 To establish a connection, the **//DSN//** style of connection must be used, the first argument of the DSN string being the database type, e.g. to connect to a MySQL database: To establish a connection, the **//DSN//** style of connection must be used, the first argument of the DSN string being the database type, e.g. to connect to a MySQL database:
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   * 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.   * 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.
   * In all cases, 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   * In all cases, 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 [[https://www.php.net/manual/en/pdo.construct.php|PDO Constructor]], for example, changing the error mode. To facilitate this, a PDO specific settable array **'' ADOConnection::pdoOptions ''** is provided:
 +
 +<code php>
 +$db = newAdoConnection('pdo');
 +
 +$db->pdoOptions = [
 +\PDO::ATTR_ERRMODE => \PDO::ERRMODE_EXCEPTION
 +];
 +
 +$dsnString= 'host=localhost;dbname=employee.fdb';
 +$db->connect('firebird:' . $dsnString,"SYSDBA", "password");
 +
 +</code>
 +
 ===== The PDO setAttribute function ===== ===== The PDO setAttribute function =====
-As of ADOdb 5.21, the PDO::setAttribute() method can be emulated using [[v5:reference:connection:setconnectionparameter|setConnectionParameter()]].+For parameters that are set after the class is instantiated, The PDO::setAttribute() method can be populated using [[v5:reference:connection:setconnectionparameter|setConnectionParameter()]]. 
 ===== Individual Driver Status ==== ===== Individual Driver Status ====
 ----------------------- -----------------------
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 ==== pdo_firebird ==== ==== pdo_firebird ====
-<WRAP info> 
-This driver is available from version 5.21 
-</WRAP> 
 <WRAP right box round 300px> <WRAP right box round 300px>
 == Native Driver == == Native Driver ==
v5/database/pdo.txt · Last modified: 2022/02/20 23:47 by mnewnham