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- <?php
- /**
- * Database
- *
- * Class for handling database connections
- *
- *
- * @category Global Class
- * @copyright ---
- * @license ---
- * @version 1.0
- * @link ---
- * @since File available since Release 1.0
- * @created ---
- * @modified ---
- * @author Original Author <--->
- * @author Future Author <--->
- */
- class Database
- {
- private $database_connection = null;
- public function __construct( $database_id )
- {
- $database_host = '';
- $database_name = '';
- $database_username = '';
- $database_password = '';
- switch ( $database_id ) {
- case 'db1':
- $database_host = 'host';
- $database_name = 'name';
- $database_username = 'user';
- $database_password = 'pass';
- break;
- case 'db2':
- $database_host = 'host';
- $database_name = 'name';
- $database_username = 'user';
- $database_password = 'pass';
- break;
- default:
- trigger_error( 'Undefined database id', E_USER_ERROR );
- }
- try {
- $this->database_connection = new PDO( "mysql:host={$database_host};
- dbname={$database_name}",
- $database_username,
- $database_password );
- $this->database_connection->setAttribute( PDO::ATTR_ERRMODE,
- PDO::ERRMODE_EXCEPTION );
- } catch ( PDOException $pdo_exception ) {
- trigger_error( $pdo_exception, E_USER_ERROR );
- }
- if ( empty( $this->database_connection ) ) {
- trigger_error( 'Undefined database connection', E_USER_ERROR );
- }
- }
- public function execute_query( $query, $statement_id, $values )
- {
- $statement = $this->database_connection->prepare( $query );
- if ( $statement_id == 'db1' ) {
- $statement->bindParam( ':id', $values[ 0 ] );
- } else if ( $statement_id == 'db2' ) {
- $statement->bindParam( ':id1', $values[ 0 ] );
- $statement->bindParam( ':id2', $values[ 1 ] );
- } else {
- trigger_error( 'Undefined statement id', E_USER_ERROR );
- }
- $statement->execute();
- return $statement;
- }
- }
- <?php
- require once( "database.php" );
- $database_1 = new Database( "db1" );
- $database_2 = new Database( "db2" );
- $database_1->execute_query( "SELECT * FROM user WHERE id = :id", "db1", array( 0 ) );
- $database_2->execute_query( "SELECT * FROM user WHERE id = :id1 AND id2 = :id2", "db2", array( 0, 1 ) );
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