1 |
<?php |
2 |
// |
3 |
// +----------------------------------------------------------------------+ |
4 |
// | PHP Version 4 | |
5 |
// +----------------------------------------------------------------------+ |
6 |
// | Copyright (c) 1997-2002 The PHP Group | |
7 |
// +----------------------------------------------------------------------+ |
8 |
// | This source file is subject to version 2.02 of the PHP license, | |
9 |
// | that is bundled with this package in the file LICENSE, and is | |
10 |
// | available at through the world-wide-web at | |
11 |
// | http://www.php.net/license/2_02.txt. | |
12 |
// | If you did not receive a copy of the PHP license and are unable to | |
13 |
// | obtain it through the world-wide-web, please send a note to | |
14 |
// | license@php.net so we can mail you a copy immediately. | |
15 |
// +----------------------------------------------------------------------+ |
16 |
// | Author: Sterling Hughes <sterling@php.net> | |
17 |
// +----------------------------------------------------------------------+ |
18 |
// |
19 |
// $Id: msql.php,v 1.25 2002/02/28 08:27:10 sebastian Exp $ |
20 |
// |
21 |
// Database independent query interface definition for PHP's Mini-SQL |
22 |
// extension. |
23 |
// |
24 |
|
25 |
require_once 'DB/common.php'; |
26 |
|
27 |
class DB_msql extends DB_common |
28 |
{ |
29 |
var $connection; |
30 |
var $phptype, $dbsyntax; |
31 |
var $prepare_tokens = array(); |
32 |
var $prepare_types = array(); |
33 |
|
34 |
function DB_msql() |
35 |
{ |
36 |
$this->DB_common(); |
37 |
$this->phptype = 'msql'; |
38 |
$this->dbsyntax = 'msql'; |
39 |
$this->features = array( |
40 |
'prepare' => false, |
41 |
'pconnect' => true, |
42 |
'transactions' => false, |
43 |
'limit' => 'emulate' |
44 |
); |
45 |
} |
46 |
|
47 |
function connect($dsninfo, $persistent = false) |
48 |
{ |
49 |
if (!DB::assertExtension('msql')) |
50 |
return $this->raiseError(DB_ERROR_EXTENSION_NOT_FOUND); |
51 |
|
52 |
$this->dsn = $dsninfo; |
53 |
$user = $dsninfo['username']; |
54 |
$pw = $dsninfo['password']; |
55 |
$dbhost = $dsninfo['hostspec'] ? $dsninfo['hostspec'] : 'localhost'; |
56 |
|
57 |
$connect_function = $persistent ? 'msql_pconnect' : 'msql_connect'; |
58 |
|
59 |
if ($dbhost && $user && $pw) { |
60 |
$conn = $connect_function($dbhost, $user, $pw); |
61 |
} elseif ($dbhost && $user) { |
62 |
$conn = $connect_function($dbhost,$user); |
63 |
} else { |
64 |
$conn = $connect_function($dbhost); |
65 |
} |
66 |
if (!$conn) { |
67 |
$this->raiseError(DB_ERROR_CONNECT_FAILED); |
68 |
} |
69 |
if (!@msql_select_db($dsninfo['database'], $conn)){ |
70 |
return $this->raiseError(DB_ERROR_NODBSELECTED); |
71 |
} |
72 |
$this->connection = $conn; |
73 |
return DB_OK; |
74 |
} |
75 |
|
76 |
function disconnect() |
77 |
{ |
78 |
$ret = @msql_close($this->connection); |
79 |
$this->connection = null; |
80 |
return $ret; |
81 |
} |
82 |
|
83 |
function simpleQuery($query) |
84 |
{ |
85 |
$this->last_query = $query; |
86 |
$query = $this->modifyQuery($query); |
87 |
$result = @msql_query($query, $this->connection); |
88 |
if (!$result) { |
89 |
return $this->raiseError(); |
90 |
} |
91 |
// Determine which queries that should return data, and which |
92 |
// should return an error code only. |
93 |
return DB::isManip($query) ? DB_OK : $result; |
94 |
} |
95 |
|
96 |
// {{{ nextResult() |
97 |
|
98 |
/** |
99 |
* Move the internal msql result pointer to the next available result |
100 |
* |
101 |
* @param a valid fbsql result resource |
102 |
* |
103 |
* @access public |
104 |
* |
105 |
* @return true if a result is available otherwise return false |
106 |
*/ |
107 |
function nextResult($result) |
108 |
{ |
109 |
return false; |
110 |
} |
111 |
|
112 |
// }}} |
113 |
|
114 |
function fetchRow($result, $fetchmode = DB_FETCHMODE_DEFAULT, $rownum=null) |
115 |
{ |
116 |
if ($fetchmode == DB_FETCHMODE_DEFAULT) { |
117 |
$fetchmode = $this->fetchmode; |
118 |
} |
119 |
$res = $this->fetchInto ($result, $arr, $fetchmode, $rownum); |
120 |
if ($res !== DB_OK) { |
121 |
return $res; |
122 |
} |
123 |
return $arr; |
124 |
} |
125 |
|
126 |
function fetchInto($result, &$ar, $fetchmode, $rownum=null) |
127 |
{ |
128 |
if ($rownum !== null) { |
129 |
if (!@msql_data_seek($result, $rownum)) { |
130 |
return null; |
131 |
} |
132 |
} |
133 |
if ($fetchmode & DB_FETCHMODE_ASSOC) { |
134 |
$ar = @msql_fetch_array($result, MSQL_ASSOC); |
135 |
} else { |
136 |
$ar = @msql_fetch_row($result); |
137 |
} |
138 |
if (!$ar) { |
139 |
if ($error = msql_error()) { |
140 |
return $this->raiseError($error); |
141 |
} else { |
142 |
return null; |
143 |
} |
144 |
} |
145 |
return DB_OK; |
146 |
} |
147 |
|
148 |
function freeResult($result) |
149 |
{ |
150 |
if (is_resource($result)) { |
151 |
return @msql_free_result($result); |
152 |
} |
153 |
if (!isset($this->prepare_tokens[$result])) { |
154 |
return false; |
155 |
} |
156 |
unset($this->prepare_tokens[$result]); |
157 |
unset($this->prepare_types[$result]); |
158 |
return true; |
159 |
} |
160 |
|
161 |
function numCols($result) |
162 |
{ |
163 |
$cols = @msql_num_fields($result); |
164 |
if (!$cols) { |
165 |
return $this->raiseError(); |
166 |
} |
167 |
return $cols; |
168 |
} |
169 |
|
170 |
function numRows($result) |
171 |
{ |
172 |
$rows = @msql_num_rows($result); |
173 |
if (!$rows) { |
174 |
return $this->raiseError(); |
175 |
} |
176 |
return $rows; |
177 |
} |
178 |
|
179 |
/** |
180 |
* Gets the number of rows affected by a query. |
181 |
* |
182 |
* @return number of rows affected by the last query |
183 |
*/ |
184 |
|
185 |
function affectedRows() |
186 |
{ |
187 |
return @msql_affected_rows($this->connection); |
188 |
} |
189 |
|
190 |
// {{{ getSpecialQuery() |
191 |
|
192 |
/** |
193 |
* Returns the query needed to get some backend info |
194 |
* @param string $type What kind of info you want to retrieve |
195 |
* @return string The SQL query string |
196 |
*/ |
197 |
function getSpecialQuery($type) |
198 |
{ |
199 |
switch ($type) { |
200 |
case 'tables': |
201 |
default: |
202 |
return null; |
203 |
} |
204 |
return $sql; |
205 |
} |
206 |
|
207 |
// }}} |
208 |
|
209 |
} |
210 |
?> |