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
|
<?php
// $Id$
function db_prefix_tables($sql) {
global $db_prefix;
if (is_array($db_prefix)) {
$prefix = $db_prefix["default"];
foreach ($db_prefix as $key => $val) {
if ($key !== "default") {
$sql = strtr($sql, array("{". $key. "}" => $val. $key));
}
}
}
else {
$prefix = $db_prefix;
}
return strtr($sql, array("{" => $prefix, "}" => ""));
}
/**
* Use the specified database connection for queries. Initialize the connection if it does not already exist,
* and if no such member exists, a duplicate of the default connection is made.
* Be very careful to switch the connection back to the default connection, so as to avoid errors. As the $name
* parameter defaults to 'default', you only need to run db_set_active() without any arguments to use
* the default database
*
* @param $name The named connection specified in the $db_url variable.
*/
function db_set_active($name = 'default') {
global $db_url, $db_type, $active_db;
static $db_conns;
if (!isset($db_conns[$name])) {
//Initiate a new connection, using the named db url specified
if (is_array($db_url)) {
$connect_url = ($db_url[$name]) ? $db_url[$name] : $db_url['default'];
}
else {
$connect_url = $db_url;
}
$db_type = substr($connect_url, 0, strpos($connect_url, "://"));
//TODO : Allow more than one database api to be present. ie: pgsl and mysql
if ($db_type == "mysql") {
include_once "includes/database.mysql.inc";
}
else {
include_once "includes/database.pear.inc";
}
$db_conns[$name] = db_connect($connect_url);
}
//set the active connection
$active_db = $db_conns[$name];
}
// initialize the default db_url
db_set_active();
?>
|
