1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
|
<?php
# include the ADODB library for abstracting the underlying database
require(ADODBDIR . "/adodb.inc.php");
# define a class for connecting to, extracting and modifying data from a database
class Database {
# predefine various variables
protected $_dbType = "mysql";
public $_rows; # holder for multiple records
public $_row; # holder for a single record
public $_result;
public $_rowCount;
public $_fieldCount;
public $_affectedRows;
public $_insertId;
public $_error;
public $_dbConn;
# class constructor
function Database() {
# connect to the database
$this->Connect(
DBHOST,
DBUSER,
DBPASS,
DBNAME
);
}
##------------------------------------------------------------------##
# connect to the database
function Connect($dbHost, $dbUser, $dbPass, $dbName) {
$this->_dbConn = &ADONewConnection($this->_dbType);
if (
$this->_dbConn->Connect
(
$dbHost,
$dbUser,
$dbPass,
$dbName
)
)
{
return true;
} else {
# grab error if the connection fails
$this->_error = $this->_dbConn->ErrorMsg();
if ( DBDEBUG == "true" ) {
$this->PrintError();
}
return false;
}
}
##------------------------------------------------------------------##
# close the connection to the database
function Close() {
if ( isset($this->_dbConn) ) {
if ( $this->_dbConn->Close() ) {
return true;
} else {
# grab error if the connection fails
$this->_error = $this->_dbConn->ErrorMsg();
if ( DBDEBUG == "true" ) {
$this->PrintError();
}
return false;
}
}
}
##------------------------------------------------------------------##
# handles select queries where multiple rows are expected
function Select($sql) {
$this->_result = $this->_dbConn->Execute($sql);
if ( $this->_result ) {
$this->_rowCount = $this->_result->RecordCount();
$this->_fieldCount = $this->_result->FieldCount();
$this->_rows = $this->_result->GetRows();
return true;
} else {
$this->_error = $this->_dbConn->ErrorMsg();
if ( DBDEBUG == "true" ) {
$this->PrintError($sql);
}
return false;
}
}
##------------------------------------------------------------------##
# handles select queries where only one record is expected
function SelectOne($sql) {
$this->_result = $this->_dbConn->Execute($sql);
if ( $this->_result ) {
$this->_fieldCount = $this->_result->FieldCount();
$this->_rowCount = $this->_result->RecordCount();
$this->_row = $this->_result->FetchRow();
return true;
} else {
$this->_error = $this->_dbConn->ErrorMsg();
if ( DBDEBUG == "true" ) {
$this->PrintError($sql);
}
return false;
}
}
##------------------------------------------------------------------##
# handles select queries that need to return a restricted record set
function SelectLimit($sql, $rows, $offset) {
$this->_result = $this->_dbConn->SelectLimit($sql, $rows, $offset);
if ( $this->_result ) {
$this->_rowCount = $this->_result->RecordCount();
$this->_fieldCount = $this->_result->FieldCount();
$this->_rows = $this->_result->GetRows();
return true;
} else {
$this->_error = $this->_dbConn->ErrorMsg();
if ( DBDEBUG == "true" ) {
$this->PrintError($sql);
}
return false;
}
}
##------------------------------------------------------------------##
# handles queries that will alter data
function Modify($sql) {
$this->_result = $this->_dbConn->Execute($sql);
if ( $this->_result ) {
$this->_affectedRows = $this->_dbConn->Affected_Rows();
return true;
} else {
$this->_error = $this->_dbConn->ErrorMsg();
if ( DBDEBUG == "true" ) {
$this->PrintError($sql);
}
return false;
}
}
##------------------------------------------------------------------##
# get auto_incremented ID of last insert statement
function InsertId() {
$this->_result = $this->_dbConn->Insert_ID();
if ( $this->_result ) {
$this->_insertId = $this->_result;
return $this->_insertId;
} else {
$this->_error = $this->_dbConn->ErrorMsg();
if ( DBDEBUG == "true" ) {
$this->PrintError();
}
return false;
}
}
##------------------------------------------------------------------##
# clean up and escape strings to be inserted into database
function EscapeString($string) {
$string = trim($string);
if ( ! is_numeric($string) ) {
$string = $this->_dbConn->qstr( $string, get_magic_quotes_gpc() );
}
# the ADODB function above seems to add single quotes around the
# submitted string. i like to add those myself at the time of
# the query, so strip them off here
$string = trim($string, "'");
return $string;
}
##------------------------------------------------------------------##
# print an error to the screen and then exit the script
function PrintError($sql = "") {
$thisScript = basename($_SERVER['PHP_SELF']);
echo <<<HTML
<html>
<head>
<title>Database Error</title>
</head>
<body>
<div>
<p>There was a database error.</p>
<p><strong>Script</strong>: $thisScript</p>
<p><strong>SQL</strong>: $sql</p>
<p><strong>Error</strong>: <span style='color: red;'>$this->_error</span></p>
</div>
</body>
</html>
HTML;
exit;
return true;
}
##------------------------------------------------------------------##
}
|
