Project

General

Profile

1 4 ryan
<?php
2 1362 Luisehahne
/**
3
 *
4
 * @category        framework
5
 * @package         database
6
 * @author          WebsiteBaker Project
7
 * @copyright       2004-2009, Ryan Djurovich
8
 * @copyright       2009-2011, Website Baker Org. e.V.
9
 * @link            http://www.websitebaker2.org/
10
 * @license         http://www.gnu.org/licenses/gpl.html
11
 * @platform        WebsiteBaker 2.8.x
12 1373 Luisehahne
 *  * @requirements    PHP 5.2.2 and higher
13 1362 Luisehahne
 * @version         $Id$
14
 * @filesource      $HeadURL:  $
15
 * @lastmodified    $Date:  $
16
 *
17
 */
18 4 ryan
19
/*
20
21
Database class
22
23
This class will be used to interface between the database
24
and the Website Baker code
25
26
*/
27
28
// Stop this file from being accessed directly
29 19 stefan
if(!defined('WB_URL')) {
30
	header('Location: ../index.php');
31 286 stefan
	exit(0);
32 19 stefan
}
33 4 ryan
34
if(!defined('DB_URL')) {
35
	//define('DB_URL', DB_TYPE.'://'.DB_USERNAME.':'.DB_PASSWORD.'@'.DB_HOST.'/'.DB_NAME);
36
}
37
38
define('DATABASE_CLASS_LOADED', true);
39
40
class database {
41 1362 Luisehahne
42
	private $db_handle  = null; // readonly from outside
43
44
	private $connected  = false;
45
46
	private $error      = '';
47
	private $error_type = '';
48
	private $message    = array();
49
50
51 4 ryan
	// Set DB_URL
52
	function database($url = '') {
53
		// Connect to database
54
		$this->connect();
55
		// Check for database connection error
56
		if($this->is_error()) {
57
			die($this->get_error());
58
		}
59
	}
60
61
	// Connect to the database
62
	function connect() {
63
		$status = $this->db_handle = mysql_connect(DB_HOST, DB_USERNAME, DB_PASSWORD);
64
		if(mysql_error()) {
65
			$this->connected = false;
66
			$this->error = mysql_error();
67
		} else {
68
			if(!mysql_select_db(DB_NAME)) {
69
				$this->connected = false;
70
				$this->error = mysql_error();
71
			} else {
72
				$this->connected = true;
73
			}
74
		}
75
		return $this->connected;
76
	}
77
78
	// Disconnect from the database
79
	function disconnect() {
80 95 stefan
		if($this->connected==true) {
81 4 ryan
			mysql_close();
82
			return true;
83
		} else {
84
			return false;
85
		}
86
	}
87
88
	// Run a query
89
	function query($statement) {
90
		$mysql = new mysql();
91
		$mysql->query($statement);
92 342 stefan
		$this->set_error($mysql->error());
93 4 ryan
		if($mysql->error()) {
94
			return null;
95
		} else {
96
			return $mysql;
97
		}
98
	}
99 1362 Luisehahne
100 4 ryan
	// Gets the first column of the first row
101 1362 Luisehahne
	function get_one( $statement )
102
	{
103
		$fetch_row = mysql_fetch_array(mysql_query($statement) );
104 4 ryan
		$result = $fetch_row[0];
105 342 stefan
		$this->set_error(mysql_error());
106 4 ryan
		if(mysql_error()) {
107
			return null;
108
		} else {
109
			return $result;
110
		}
111
	}
112
113
	// Set the DB error
114
	function set_error($message = null) {
115
		global $TABLE_DOES_NOT_EXIST, $TABLE_UNKNOWN;
116
		$this->error = $message;
117
		if(strpos($message, 'no such table')) {
118
			$this->error_type = $TABLE_DOES_NOT_EXIST;
119
		} else {
120
			$this->error_type = $TABLE_UNKNOWN;
121
		}
122
	}
123
124
	// Return true if there was an error
125
	function is_error() {
126
		return (!empty($this->error)) ? true : false;
127
	}
128
129
	// Return the error
130
	function get_error() {
131
		return $this->error;
132
	}
133
134 1362 Luisehahne
/*
135
 * default Getter
136
 */
137
	public function __get($var_name)
138
	{
139
		if($var_name == 'db_handle')
140
		{
141
			return $this->db_handle;
142
		}
143
		return null;
144
	}
145
146
/*
147
 * @param string $table_name: full name of the table (incl. TABLE_PREFIX)
148
 * @param string $field_name: name of the field to seek for
149
 * @return bool: true if field exists
150
 */
151
	public function field_exists($table_name, $field_name)
152
	{
153
		$sql = 'DESCRIBE `'.$table_name.'` `'.$field_name.'` ';
154
		$query = $this->query($sql);
155
		return ($query->numRows() != 0);
156
	}
157
158
/*
159
 * @param string $table_name: full name of the table (incl. TABLE_PREFIX)
160
 * @param string $index_name: name of the index to seek for
161
 * @return bool: true if field exists
162
 */
163
	public function index_exists($table_name, $index_name, $number_fields = 0)
164
	{
165
		$number_fields = intval($number_fields);
166
		$keys = 0;
167
		$sql = 'SHOW INDEX FROM `'.$table_name.'`';
168
		if( ($res_keys = $this->query($sql)) )
169
		{
170
			while(($rec_key = $res_keys->fetchRow()))
171
			{
172
				if( $rec_key['Key_name'] == $index_name )
173
				{
174
					$keys++;
175
				}
176
			}
177
178
		}
179
		if( $number_fields == 0 )
180
		{
181
			return ($keys != $number_fields);
182
		}else
183
		{
184
			return ($keys == $number_fields);
185
		}
186
	}
187
/*
188
 * @param string $table_name: full name of the table (incl. TABLE_PREFIX)
189
 * @param string $field_name: name of the field to add
190
 * @param string $description: describes the new field like ( INT NOT NULL DEFAULT '0')
191
 * @return bool: true if successful, otherwise false and error will be set
192
 */
193
	public function field_add($table_name, $field_name, $description)
194
	{
195
		if( !$this->field_exists($field_name, $table_name) )
196
		{ // add new field into a table
197
			$sql = 'ALTER TABLE `'.$table_name.'` ADD '.$field_name.' '.$description.' ';
198
			$query = $this->query($sql);
199
			$this->set_error(mysql_error());
200
			if( !$this->is_error() )
201
			{
202
				return ( $this->field_exists($field_name, $table_name) ) ? true : false;
203
			}
204
		}else
205
		{
206
			$this->set_error('field \''.$field_name.'\' already exists');
207
		}
208
		return false;
209
	}
210
211
/*
212
 * @param string $table_name: full name of the table (incl. TABLE_PREFIX)
213
 * @param string $field_name: name of the field to add
214
 * @param string $description: describes the new field like ( INT NOT NULL DEFAULT '0')
215
 * @return bool: true if successful, otherwise false and error will be set
216
 */
217
	public function field_modify($table_name, $field_name, $description)
218
	{
219
		$retval = false;
220
		if( $this->field_exists($field_name, $table_name) )
221
		{ // modify a existing field in a table
222
			$sql  = 'ALTER TABLE `'.$table_name.'` DROP `'.$field_name.'`';
223
		}
224
	}
225
226
/*
227
 * @param string $table_name: full name of the table (incl. TABLE_PREFIX)
228
 * @param string $field_name: name of the field to remove
229
 * @return bool: true if successful, otherwise false and error will be set
230
 */
231
	public function field_remove($table_name, $field_name)
232
	{
233
		$retval = false;
234
		if( $this->field_exists($field_name, $table_name) )
235
		{ // modify a existing field in a table
236
			$sql  = 'ALTER TABLE `'.$table_name.'` DROP `'.$field_name.'`';
237
			$retval = ( $this->query($sql) ? true : false );
238
		}
239
		return $retval;
240
	}
241
242
/*
243
 * @param string $table_name: full name of the table (incl. TABLE_PREFIX)
244
 * @param string $index_name: name of the new index
245
 * @param string $field_list: comma seperated list of fields for this index
246
 * @param string $index_type: kind of index (UNIQUE, PRIMARY, '')
247
 * @return bool: true if successful, otherwise false and error will be set
248
 */
249
	public function index_add($table_name, $index_name, $field_list, $index_type = '')
250
	{
251
		$retval = false;
252
		$field_list = str_replace(' ', '', $field_list);
253
		$field_list = explode(',', $field_list);
254
		$number_fields = sizeof($field_list);
255
		$field_list = '`'.implode('`,`', $field_list).'`';
256
		if( $this->index_exists($table_name, $index_name, $number_fields) ||
257
		    $this->index_exists($table_name, $index_name))
258
		{
259
			$sql  = 'ALTER TABLE `'.$table_name.'` ';
260
			$sql .= 'DROP INDEX `'.$index_name.'`';
261
			if( $this->query($sql))
262
			{
263
				$sql  = 'ALTER TABLE `'.$table_name.'` ';
264
				$sql .= 'ADD '.$index_type.' `'.$index_name.'` ( '.$field_list.' ); ';
265
				if( $this->query($sql)) { $retval = true; }
266
			}
267
		}
268
		return $retval;
269
	}
270
271
/*
272
 * @param string $table_name: full name of the table (incl. TABLE_PREFIX)
273
 * @param string $field_name: name of the field to remove
274
 * @return bool: true if successful, otherwise false and error will be set
275
 */
276
	public function index_remove($table_name, $index_name)
277
	{
278
		$retval = false;
279
		if( $this->index_exists($table_name, $index_name) )
280
		{ // modify a existing field in a table
281
			$sql  = 'ALTER TABLE `'.$table_name.'` DROP INDEX `'.$index_name.'`';
282
			$retval = ( $this->query($sql) ? true : false );
283
		}
284
		return $retval;
285
	}
286
287
} /// end of class database
288
289 4 ryan
class mysql {
290
291
	// Run a query
292
	function query($statement) {
293
		$this->result = mysql_query($statement);
294
		$this->error = mysql_error();
295
		return $this->result;
296
	}
297
298
	// Fetch num rows
299
	function numRows() {
300
		return mysql_num_rows($this->result);
301
	}
302 1011 Ruebenwurz
303
	// Fetch row  $typ = MYSQL_ASSOC, MYSQL_NUM, MYSQL_BOTH
304
	function fetchRow($typ = MYSQL_BOTH) {
305
		return mysql_fetch_array($this->result, $typ);
306 4 ryan
	}
307 1011 Ruebenwurz
308 4 ryan
	// Get error
309
	function error() {
310
		if(isset($this->error)) {
311
			return $this->error;
312
		} else {
313
			return null;
314
		}
315
	}
316
317
}
318 1364 Luisehahne
/* this function is placed inside this file temporarely until a better place is found */
319
/*  function to update a var/value-pair(s) in table ****************************
320
 *  nonexisting keys are inserted
321
 *  @param string $table: name of table to use (without prefix)
322
 *  @param mixed $key:    a array of key->value pairs to update
323
 *                        or a string with name of the key to update
324
 *  @param string $value: a sting with needed value, if $key is a string too
325
 *  @return bool:  true if any keys are updated, otherwise false
326
 */
327
	function db_update_key_value($table, $key, $value = '')
328
	{
329
		global $database;
330
		if( !is_array($key))
331
		{
332
			if( trim($key) != '' )
333
			{
334
				$key = array( trim($key) => trim($value) );
335
			} else {
336
				$key = array();
337
			}
338
		}
339
		$retval = true;
340
		foreach( $key as $index=>$val)
341
		{
342
			$index = strtolower($index);
343
			$sql = 'SELECT COUNT(`setting_id`) FROM `'.TABLE_PREFIX.$table.'` WHERE `name` = \''.$index.'\' ';
344
			if($database->get_one($sql))
345
			{
346
				$sql = 'UPDATE ';
347
				$sql_where = 'WHERE `name` = \''.$index.'\'';
348
			}else {
349
				$sql = 'INSERT INTO ';
350
				$sql_where = '';
351
			}
352
			$sql .= '`'.TABLE_PREFIX.$table.'` ';
353
			$sql .= 'SET `name` = \''.$index.'\', ';
354
			$sql .= '`value` = \''.$val.'\' '.$sql_where;
355
			if( !$database->query($sql) )
356
			{
357
				$retval = false;
358
			}
359
		}
360
		return $retval;
361
	}
362 4 ryan
?>