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<?php
//
// +----------------------------------------------------------------------+
// | PHP version 4.0 |
// +----------------------------------------------------------------------+
// | Copyright (c) 1997, 1998, 1999, 2000 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: Sterling Hughes <sterling@php.net> |
// +----------------------------------------------------------------------+
//
// $Id: mssql.php,v 1.12 2000/09/13 11:27:59 ssb Exp $
//
// Database independent query interface definition for PHP's Microsoft SQL Server
// extension.
//
require_once 'DB/common.php';
class DB_mssql extends DB_common {
var $connection;
var $phptype, $dbsyntax;
var $prepare_tokens = array();
var $prepare_types = array();
function DB_mssql() {
$this->phptype = 'mssql';
$this->dbsyntax = 'mssql';
$this->features = array(
'prepare' => false,
'pconnect' => true,
'transactions' => false
);
}
function connect (&$dsn, $persistent=false) {
if(is_array($dsn)) {
$dsninfo = &$dsn;
} else {
$dsninfo = DB::parseDSN($dsn);
}
if (!$dsninfo || !$dsninfo['phptype']) {
return $this->raiseError();
}
$user = $dsninfo['username'];
$pw = $dsninfo['password'];
$dbhost = $dsninfo['hostspec'] ? $dsninfo['hostspec'] : 'localhost';
$connect_function = $persistent ? 'mssql_pconnect' : 'mssql_connect';
if ($dbhost && $user && $pw) {
$conn = $connect_function($dbhost, $user, $pw);
} elseif ($dbhost && $user) {
$conn = $connect_function($dbhost,$user);
} else {
$conn = $connect_function($dbhost);
}
if ($dsninfo['database']) {
@mssql_select_db($dsninfo['database'], $conn);
} else {
return $this->raiseError();
}
$this->connection = $conn;
return DB_OK;
}
function disconnect() {
return @mssql_close($this->connection);
}
function &query( $stmt ) {
$this->last_query = $query;
$result = @mssql_query($stmt, $this->connection);
if (!$result) {
return $this->raiseError();
}
// Determine which queries that should return data, and which
// should return an error code only.
if (preg_match('/(SELECT|SHOW|LIST|DESCRIBE)/i', $stmt)) {
$resultObj = new DB_result($this, $result);
return $resultObj;
} else {
return DB_OK;
}
}
function simpleQuery($stmt) {
$this->last_query = $query;
$result = @mssql_query($stmt, $this->connection);
if (!$result) {
return $this->raiseError();
}
// Determine which queries that should return data, and which
// should return an error code only.
if ( preg_match('/(SELECT|SHOW|LIST|DESCRIBE)/i', $stmt) ) {
return $result;
} else {
return DB_OK;
}
}
function &fetchRow($result, $fetchmode=DB_FETCHMODE_DEFAULT) {
if ($fetchmode == DB_FETCHMODE_DEFAULT) {
$fetchmode = $this->fetchmode;
}
if ($fetchmode & DB_FETCHMODE_ASSOC) {
$row = @mssql_fetch_array($result);
} else {
$row = @mssql_fetch_row($result);
}
if (!$row) {
return $this->raiseError();
}
return $row;
}
function fetchInto($result, &$ar, $fetchmode=DB_FETCHMODE_DEFAULT) {
if ($fetchmode == DB_FETCHMODE_DEFAULT) {
$fetchmode = $this->fetchmode;
}
if ($fetchmode & DB_FETCHMODE_ASSOC) {
$ar = @mssql_fetch_array($result);
} else {
$ar = @mssql_fetch_row($result);
}
if (!$ar) {
return $this->raiseError();
}
return DB_OK;
}
function freeResult($result) {
if (is_resource($result)) {
return @mssql_free_result($result);
}
if (!isset($this->prepare_tokens[$result])) {
return false;
}
unset($this->prepare_tokens[$result]);
unset($this->prepare_types[$result]);
return true;
}
function numCols($result) {
$cols = @mssql_num_fields($result);
if (!$cols) {
return $this->raiseError();
}
return $cols;
}
function prepare($query) {
$tokens = split('[\&\?]', $query);
$token = 0;
$types = array();
for ($i = 0; $i < strlen($query); $i++) {
switch ($query[$i]) {
case '?':
$types[$token++] = DB_PARAM_SCALAR;
break;
case '&':
$types[$token++] = DB_PARAM_OPAQUE;
break;
}
}
$this->prepare_tokens[] = &$tokens;
end($this->prepare_tokens);
$k = key($this->prepare_tokens);
$this->prepare_types[$k] = $types;
return $k;
}
function execute($stmt, $data = false) {
$realquery = $this->execute_emulate_query($stmt, $data);
$this->last_query = $realquery;
$result = @mssql_query($realquery, $this->connection);
if (!$result) {
return $this->raiseError();
}
if ( preg_match('/(SELECT|SHOW|LIST|DESCRIBE)/i', $realquery) ) {
return $result;
} else {
return DB_OK;
}
}
function autoCommit($onoff=false) {
return $this->raiseError(DB_ERROR_NOT_CAPABLE);
}
function commit() {
return $this->raiseError(DB_ERROR_NOT_CAPABLE);
}
function rollback() {
return $this->raiseError(DB_ERROR_NOT_CAPABLE);
}
}
?>
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