source: trunk/include/functions_rate.inc.php @ 4423

Revision 4325, 4.0 KB checked in by nikrou, 10 years ago (diff)

Feature 1244 resolved
Replace all mysql functions in core code by ones independant of database engine

Fix small php code synxtax : hash must be accessed with [ ] and not { }.

  • Property svn:eol-style set to LF
Line 
1<?php
2// +-----------------------------------------------------------------------+
3// | Piwigo - a PHP based picture gallery                                  |
4// +-----------------------------------------------------------------------+
5// | Copyright(C) 2008-2009 Piwigo Team                  http://piwigo.org |
6// | Copyright(C) 2003-2008 PhpWebGallery Team    http://phpwebgallery.net |
7// | Copyright(C) 2002-2003 Pierrick LE GALL   http://le-gall.net/pierrick |
8// +-----------------------------------------------------------------------+
9// | This program is free software; you can redistribute it and/or modify  |
10// | it under the terms of the GNU General Public License as published by  |
11// | the Free Software Foundation                                          |
12// |                                                                       |
13// | This program is distributed in the hope that it will be useful, but   |
14// | WITHOUT ANY WARRANTY; without even the implied warranty of            |
15// | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU      |
16// | General Public License for more details.                              |
17// |                                                                       |
18// | You should have received a copy of the GNU General Public License     |
19// | along with this program; if not, write to the Free Software           |
20// | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
21// | USA.                                                                  |
22// +-----------------------------------------------------------------------+
23
24/**
25 * rate a picture by a user
26 *
27 * @param int image identifier
28 * @param int rate
29 * @return void
30 */
31function rate_picture($image_id, $rate)
32{
33  global $conf, $user;
34
35  if (!isset($rate)
36      or !$conf['rate']
37      or !in_array($rate, $conf['rate_items']))
38  {
39    return false;
40  }
41
42  $user_anonymous = is_autorize_status(ACCESS_CLASSIC) ? false : true;
43
44  if ($user_anonymous and !$conf['rate_anonymous'])
45  {
46    return false;
47  }
48
49  $ip_components = explode('.', $_SERVER["REMOTE_ADDR"]);
50  if (count($ip_components) > 3)
51  {
52    array_pop($ip_components);
53  }
54  $anonymous_id = implode ('.', $ip_components);
55
56  if ($user_anonymous)
57  {
58    $save_anonymous_id = pwg_get_cookie_var('anonymous_rater', $anonymous_id);
59
60    if ($anonymous_id != $save_anonymous_id)
61    { // client has changed his IP adress or he's trying to fool us
62      $query = '
63SELECT element_id
64  FROM '.RATE_TABLE.'
65  WHERE user_id = '.$user['id'].'
66    AND anonymous_id = \''.$anonymous_id.'\'
67;';
68      $already_there = array_from_query($query, 'element_id');
69
70      if (count($already_there) > 0)
71      {
72        $query = '
73DELETE
74  FROM '.RATE_TABLE.'
75  WHERE user_id = '.$user['id'].'
76    AND anonymous_id = \''.$save_anonymous_id.'\'
77    AND element_id IN ('.implode(',', $already_there).')
78;';
79         pwg_query($query);
80       }
81
82       $query = '
83UPDATE '.RATE_TABLE.'
84  SET anonymous_id = \'' .$anonymous_id.'\'
85  WHERE user_id = '.$user['id'].'
86    AND anonymous_id = \'' . $save_anonymous_id.'\'
87;';
88       pwg_query($query);
89    } // end client changed ip
90
91    pwg_set_cookie_var('anonymous_rater', $anonymous_id);
92  } // end anonymous user
93
94  $query = '
95DELETE
96  FROM '.RATE_TABLE.'
97  WHERE element_id = '.$image_id.'
98    AND user_id = '.$user['id'].'
99';
100  if ($user_anonymous)
101  {
102    $query.= ' AND anonymous_id = \''.$anonymous_id.'\'';
103  }
104  pwg_query($query);
105  $query = '
106INSERT
107  INTO '.RATE_TABLE.'
108  (user_id,anonymous_id,element_id,rate,date)
109  VALUES
110  ('
111    .$user['id'].','
112    .'\''.$anonymous_id.'\','
113    .$image_id.','
114    .$rate
115    .',NOW())
116;';
117  pwg_query($query);
118
119  // update of images.average_rate field
120  $query = '
121SELECT COUNT(rate) AS count
122     , ROUND(AVG(rate),2) AS average
123     , ROUND(STD(rate),2) AS stdev
124  FROM '.RATE_TABLE.'
125  WHERE element_id = '.$image_id.'
126;';
127  $row = pwg_db_fetch_assoc(pwg_query($query));
128  $query = '
129UPDATE '.IMAGES_TABLE.'
130  SET average_rate = '.$row['average'].'
131  WHERE id = '.$image_id.'
132;';
133  pwg_query($query);
134  return $row;
135}
136
137?>
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