home *** CD-ROM | disk | FTP | other *** search
- <?php
- //
- // +----------------------------------------------------------------------+
- // | PHP version 4.0 |
- // +----------------------------------------------------------------------+
- // | Copyright (c) 1997-2001 The PHP Group |
- // +----------------------------------------------------------------------+
- // | This source file is subject to version 2.02 of the PHP license, |
- // | that is bundled with this package in the file LICENSE, and is |
- // | available at through the world-wide-web at |
- // | http://www.php.net/license/2_02.txt. |
- // | If you did not receive a copy of the PHP license and are unable to |
- // | obtain it through the world-wide-web, please send a note to |
- // | license@php.net so we can mail you a copy immediately. |
- // +----------------------------------------------------------------------+
- // | Authors: Stig Bakken <ssb@fast.no> |
- // | |
- // +----------------------------------------------------------------------+
- //
- // Database independent query interface definition for PHP's ODBC
- // extension.
- //
-
- //
- // XXX legend:
- //
- // XXX ERRORMSG: The error message from the odbc function should
- // be registered here.
- //
-
- require_once 'DB/common.php';
-
- class DB_odbc extends DB_common
- {
- // {{{ properties
-
- var $connection;
- var $phptype, $dbsyntax;
-
- // }}}
- // {{{ constructor
-
- function DB_odbc()
- {
- $this->DB_common();
- $this->phptype = 'odbc';
- $this->dbsyntax = 'sql92';
- $this->features = array(
- 'prepare' => true,
- 'pconnect' => true,
- 'transactions' => false
- );
- $this->errorcode_map = array(
- "01004" => DB_ERROR_TRUNCATED,
- "07001" => DB_ERROR_MISMATCH,
- "21S01" => DB_ERROR_MISMATCH,
- "21S02" => DB_ERROR_MISMATCH,
- "22003" => DB_ERROR_INVALID_NUMBER,
- "22008" => DB_ERROR_INVALID_DATE,
- "22012" => DB_ERROR_DIVZERO,
- "23000" => DB_ERROR_CONSTRAINT,
- "24000" => DB_ERROR_INVALID,
- "34000" => DB_ERROR_INVALID,
- "37000" => DB_ERROR_SYNTAX,
- "42000" => DB_ERROR_SYNTAX,
- "IM001" => DB_ERROR_UNSUPPORTED,
- "S0001" => DB_ERROR_NOT_FOUND,
- "S0002" => DB_ERROR_NOT_FOUND,
- "S0011" => DB_ERROR_ALREADY_EXISTS,
- "S0012" => DB_ERROR_NOT_FOUND,
- "S0021" => DB_ERROR_ALREADY_EXISTS,
- "S0022" => DB_ERROR_NOT_FOUND,
- "S1009" => DB_ERROR_INVALID,
- "S1090" => DB_ERROR_INVALID,
- "S1C00" => DB_ERROR_NOT_CAPABLE
- );
- }
-
- // }}}
- // {{{ connect()
-
- /**
- * Connect to a database and log in as the specified user.
- *
- * @param $dsn the data source name (see DB::parseDSN for syntax)
- * @param $persistent (optional) whether the connection should
- * be persistent
- *
- * @return int DB_OK on success, a DB error code on failure
- */
- function connect($dsn, $persistent = false) {
- if (is_array($dsn)) {
- $dsninfo = &$dsn;
- } else {
- $dsninfo = DB::parseDSN($dsn);
- }
- if (!$dsninfo || !$dsninfo['phptype']) {
- return $this->raiseError(); // XXX ERRORMSG
- }
- $this->dsn = $dsninfo;
- $this->dbsyntax = $dsninfo['dbsyntax'];
- switch ($this->dbsyntax) {
- case 'solid':
- $this->features = array(
- 'prepare' => true,
- 'pconnect' => true,
- 'transactions' => true
- );
- $default_dsn = 'localhost';
- break;
- default:
- break;
- }
- $dbhost = $dsninfo['hostspec'] ? $dsninfo['hostspec'] : 'localhost';
- $user = $dsninfo['username'];
- $pw = $dsninfo['password'];
- DB::assertExtension("odbc");
- if ($this->provides('pconnect')) {
- $connect_function = $persistent ? 'odbc_pconnect' : 'odbc_connect';
- } else {
- $connect_function = 'odbc_connect';
- }
- $conn = @$connect_function($dbhost, $user, $pw);
- if (!is_resource($conn)) {
- return $this->raiseError();
- }
- $this->connection = $conn;
- return DB_OK;
- }
-
- // }}}
- // {{{ disconnect()
-
- function disconnect()
- {
- $err = odbc_close($this->connection); // XXX ERRORMSG
- return $err;
- }
-
- // }}}
- // {{{ simpleQuery()
-
- /**
- * Send a query to ODBC and return the results as a ODBC resource
- * identifier.
- *
- * @param $query the SQL query
- *
- * @return int returns a valid ODBC result for successful SELECT
- * queries, DB_OK for other successful queries. A DB error code
- * is returned on failure.
- */
- function simpleQuery($query)
- {
- $this->last_query = $query;
- $query = $this->modifyQuery($query);
- $result = odbc_exec($this->connection, $query);
- if (!$result) {
- return $this->raiseError(); // XXX ERRORMSG
- }
- // Determine which queries that should return data, and which
- // should return an error code only.
- return DB::isManip($query) ? DB_OK : $result;
- }
-
- // }}}
- // {{{ fetchRow()
-
- /**
- * Fetch a row and return as array.
- *
- * @param $result result identifier
- * @param $fetchmode how the resulting array should be indexed
- *
- * @return mixed an array on success (associative or ordred, depending on
- * fetchmode), a false on failure, false if there is no more
- * data
- */
- function fetchRow($result, $fetchmode = DB_FETCHMODE_DEFAULT)
- {
- if ($fetchmode == DB_FETCHMODE_DEFAULT) {
- $fetchmode = $this->fetchmode;
- }
-
- $cols = odbc_fetch_into($result, &$row);
- if (!$cols) {
- if ($errno = odbc_error($this->connection)) {
- return $this->raiseError($errno);
- } else {
- return null;
- }
- }
-
- if ($fetchmode == DB_FETCHMODE_ORDERED) {
- return $row;
- } else if ($fetchmode == DB_FETCHMODE_ASSOC) {
- for ($i = 0; $i < count($row); $i++) {
- $colName = odbc_field_name($result, $i+1);
- $a[$colName] = $row[$i];
- }
- return $a;
- } else {
- return $this->raiseError(); // XXX ERRORMSG
- }
- }
-
- // }}}
- // {{{ freeResult()
-
- function freeResult($result)
- {
- $err = odbc_free_result($result); // XXX ERRORMSG
- return $err;
- }
-
- // }}}
- // {{{ quoteString()
-
- function quoteString($string)
- {
- return str_replace("'", "''", $string);
- }
-
- // }}}
- // {{{ numCols()
-
- function numCols($result)
- {
- $cols = @odbc_num_fields($result);
- if (!$cols) {
- return $this->raiseError($php_errormsg);
- }
- return $cols;
- }
-
- // }}}
- // {{{ numRows()
-
- /**
- * ODBC does not support counting rows in the result set of
- * SELECTs.
- *
- * @param $result the odbc result resource
- * @return a DB error
- */
- function numRows($result)
- {
- return $this->raiseError(DB_ERROR_NOT_CAPABLE);
- }
-
- // }}}
- // {{{ errorNative()
-
- /**
- * Get the native error code of the last error (if any) that
- * occured on the current connection.
- *
- * @access public
- *
- * @return int ODBC error code
- */
-
- function errorNative()
- {
- if (is_resource($this->connection)) {
- return odbc_error($this->connection);
- } else {
- return odbc_error();
- }
- }
-
- // }}}
- // {{{ autoCommit()
-
- function autoCommit($onoff = false)
- {
- if (!@odbc_autocommit($this->connection, $onoff)) {
- return $this->raiseError($php_errormsg);
- }
- return DB_OK;
- }
-
- // }}}
- // {{{ commit()
-
- function commit()
- {
- if (!@odbc_commit($this->connection)) {
- return $this->raiseError($php_errormsg);
- }
- return DB_OK;
- }
-
- // }}}
- // {{{ rollback()
-
- function rollback()
- {
- if (!@odbc_commit($this->connection)) {
- return $this->raiseError($php_errormsg);
- }
- return DB_OK;
- }
-
- // }}}
- // {{{ odbcRaiseError()
-
- function odbcRaiseError($errno = null)
- {
- if (is_resource($this->connection)) {
- $message = odbc_errormsg($this->connection);
- $code = odbc_error($this->connection);
- } else {
- $message = odbc_errormsg();
- $code = odbc_error();
- }
- if ($errno === null) {
- return $this->raiseError($this->errorCode($code));
- }
- return $this->raiseError($this->errorCode($errno));
- }
-
- // }}}
- }
-
- // Local variables:
- // tab-width: 4
- // c-basic-offset: 4
- // End:
- ?>
-