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OpenSQLManager/src/common/db_pdo.php

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<?php
/**
* OpenSQLManager
*
* Free Database manager for Open Source Databases
*
* @author Timothy J. Warren
* @copyright Copyright (c) 2012
* @link https://github.com/aviat4ion/OpenSQLManager
* @license http://philsturgeon.co.uk/code/dbad-license
*/
// --------------------------------------------------------------------------
/**
* Base Database class
*
* Extends PDO to simplify cross-database issues
*/
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abstract class DB_PDO extends PDO {
protected $statement;
function __construct($dsn, $username=NULL, $password=NULL, $driver_options=array())
{
parent::__construct($dsn, $username, $password, $driver_options);
$class = __CLASS__.'_manip';
$this->manip = new $class;
}
// -------------------------------------------------------------------------
/**
* Simplifies prepared statements for database queries
*
* @param string $sql
* @param array $data
* @return mixed PDOStatement / FALSE
*/
function prepare_query($sql, $data)
{
// Prepare the sql
$query = $this->prepare($sql);
if( ! is_like_array($query))
{
$this->get_last_error();
return FALSE;
}
// Set the statement in the class variable for easy later access
$this->statement =& $query;
if( ! is_like_array($data))
{
trigger_error("Invalid data argument");
return FALSE;
}
// Bind the parameters
foreach($data as $k => $value)
{
$res = $query->bindValue($k, $value);
if( ! $res)
{
trigger_error("Parameter not successfully bound");
return FALSE;
}
}
return $query;
}
// -------------------------------------------------------------------------
/**
* Retreives the data from a select query
*
* @param PDOStatement $statement
* @return array
*/
function get_query_data($statement)
{
// Execute the query
$statement->execute();
// Return the data array fetched
return $statement->fetchAll(PDO::FETCH_ASSOC);
}
// -------------------------------------------------------------------------
/**
* Returns number of rows affected by an INSERT, UPDATE, DELETE type query
*
* @param PDOStatement $statement
* @return int
*/
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function affected_rows($statement)
{
// Execute the query
$statement->execute();
// Return number of rows affected
return $statement->rowCount();
}
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// -------------------------------------------------------------------------
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/**
* Abstract functions to override in child classes
*/
/**
* Return list of tables for the current database
*
* @return array
*/
abstract function get_tables();
/**
* Empty the passed table
*
* @param string $table
*
* @return void
*/
abstract function truncate($table);
/**
* Return the number of rows for the last SELECT query
*
* @return int
*/
abstract function num_rows();
}
// -------------------------------------------------------------------------
/**
* Abstract parent for database manipulation subclasses
*/
abstract class db_manip {
/**
* Get database-specific sql to create a new table
*
* @param string $name
* @param array $columns
* @param array $constraints
* @param array $indexes
*
* @return string
*/
abstract function create_table($name, $columns, $constraints, $indexes);
}
// End of db_pdo.php