1
|
|
|
<?php |
2
|
|
|
/** |
3
|
|
|
* |
4
|
|
|
* Precise Similar Topics |
5
|
|
|
* |
6
|
|
|
* @copyright (c) 2013 Matt Friedman |
7
|
|
|
* @license GNU General Public License, version 2 (GPL-2.0) |
8
|
|
|
* |
9
|
|
|
*/ |
10
|
|
|
|
11
|
|
|
namespace vse\similartopics\core; |
12
|
|
|
|
13
|
|
|
class similar_topics |
14
|
|
|
{ |
15
|
|
|
/** @var \phpbb\auth\auth */ |
16
|
|
|
protected $auth; |
17
|
|
|
|
18
|
|
|
/** @var \phpbb\cache\service */ |
19
|
|
|
protected $cache; |
20
|
|
|
|
21
|
|
|
/** @var \phpbb\config\config */ |
22
|
|
|
protected $config; |
23
|
|
|
|
24
|
|
|
/** @var \phpbb\db\driver\driver_interface */ |
25
|
|
|
protected $db; |
26
|
|
|
|
27
|
|
|
/** @var \phpbb\event\dispatcher_interface */ |
28
|
|
|
protected $dispatcher; |
29
|
|
|
|
30
|
|
|
/** @var \phpbb\pagination */ |
31
|
|
|
protected $pagination; |
32
|
|
|
|
33
|
|
|
/** @var \phpbb\request\request */ |
34
|
|
|
protected $request; |
35
|
|
|
|
36
|
|
|
/** @var \phpbb\template\template */ |
37
|
|
|
protected $template; |
38
|
|
|
|
39
|
|
|
/** @var \phpbb\user */ |
40
|
|
|
protected $user; |
41
|
|
|
|
42
|
|
|
/** @var \phpbb\content_visibility */ |
43
|
|
|
protected $content_visibility; |
44
|
|
|
|
45
|
|
|
/** @var \vse\similartopics\driver\driver_interface */ |
46
|
|
|
protected $similartopics; |
47
|
|
|
|
48
|
|
|
/** @var string phpBB root path */ |
49
|
|
|
protected $root_path; |
50
|
|
|
|
51
|
|
|
/** @var string PHP file extension */ |
52
|
|
|
protected $php_ext; |
53
|
|
|
|
54
|
|
|
/** |
55
|
|
|
* Constructor |
56
|
|
|
* |
57
|
|
|
* @access public |
58
|
|
|
* @param \phpbb\auth\auth $auth |
59
|
|
|
* @param \phpbb\cache\service $cache |
60
|
|
|
* @param \phpbb\config\config $config |
61
|
|
|
* @param \phpbb\db\driver\driver_interface $db |
62
|
|
|
* @param \phpbb\event\dispatcher_interface $dispatcher |
63
|
|
|
* @param \phpbb\pagination $pagination |
64
|
|
|
* @param \phpbb\request\request $request |
65
|
|
|
* @param \phpbb\template\template $template |
66
|
|
|
* @param \phpbb\user $user |
67
|
|
|
* @param \phpbb\content_visibility $content_visibility |
68
|
|
|
* @param \vse\similartopics\driver\manager $similartopics_manager |
69
|
|
|
* @param string $root_path |
70
|
|
|
* @param string $php_ext |
71
|
|
|
*/ |
72
|
|
|
public function __construct(\phpbb\auth\auth $auth, \phpbb\cache\service $cache, \phpbb\config\config $config, \phpbb\db\driver\driver_interface $db, \phpbb\event\dispatcher_interface $dispatcher, \phpbb\pagination $pagination, \phpbb\request\request $request, \phpbb\template\template $template, \phpbb\user $user, \phpbb\content_visibility $content_visibility, \vse\similartopics\driver\manager $similartopics_manager, $root_path, $php_ext) |
73
|
|
|
{ |
74
|
|
|
$this->auth = $auth; |
75
|
|
|
$this->cache = $cache; |
76
|
|
|
$this->config = $config; |
77
|
|
|
$this->db = $db; |
78
|
|
|
$this->dispatcher = $dispatcher; |
79
|
|
|
$this->pagination = $pagination; |
80
|
|
|
$this->request = $request; |
81
|
|
|
$this->template = $template; |
82
|
|
|
$this->user = $user; |
83
|
|
|
$this->content_visibility = $content_visibility; |
84
|
|
|
$this->root_path = $root_path; |
85
|
|
|
$this->php_ext = $php_ext; |
86
|
|
|
|
87
|
|
|
$this->similartopics = $similartopics_manager->get_driver($db->get_sql_layer()); |
88
|
|
|
} |
89
|
|
|
|
90
|
|
|
/** |
91
|
|
|
* Is similar topics available? |
92
|
|
|
* |
93
|
|
|
* @access public |
94
|
|
|
* @return bool True if available, false otherwise |
95
|
|
|
*/ |
96
|
|
|
public function is_available() |
97
|
|
|
{ |
98
|
|
|
return $this->is_enabled() && $this->is_viewable() && $this->similartopics !== null; |
99
|
|
|
} |
100
|
|
|
|
101
|
|
|
/** |
102
|
|
|
* Is similar topics configured? |
103
|
|
|
* |
104
|
|
|
* @access public |
105
|
|
|
* @return bool True if configured, false otherwise |
106
|
|
|
*/ |
107
|
|
|
public function is_enabled() |
108
|
|
|
{ |
109
|
|
|
return !empty($this->config['similar_topics']) && !empty($this->config['similar_topics_limit']); |
110
|
|
|
} |
111
|
|
|
|
112
|
|
|
/** |
113
|
|
|
* Is similar topics viewable by the user? |
114
|
|
|
* |
115
|
|
|
* @access public |
116
|
|
|
* @return bool True if viewable, false otherwise |
117
|
|
|
*/ |
118
|
|
|
public function is_viewable() |
119
|
|
|
{ |
120
|
|
|
return !empty($this->user->data['user_similar_topics']) && $this->auth->acl_get('u_similar_topics'); |
121
|
|
|
} |
122
|
|
|
|
123
|
|
|
/** |
124
|
|
|
* Get similar topics by matching topic titles |
125
|
|
|
* |
126
|
|
|
* NOTE: FULLTEXT has built-in English ignore words. We use phpBB's |
127
|
|
|
* ignore words for non-English languages. We also remove any |
128
|
|
|
* admin-defined special ignore words. |
129
|
|
|
* |
130
|
|
|
* @access public |
131
|
|
|
* @param array $topic_data Array with topic data |
132
|
|
|
*/ |
133
|
|
|
public function display_similar_topics($topic_data) |
134
|
|
|
{ |
135
|
|
|
// If the forum should not display similar topics, no need to continue |
136
|
|
|
if ($topic_data['similar_topics_hide']) |
137
|
|
|
{ |
138
|
|
|
return; |
139
|
|
|
} |
140
|
|
|
|
141
|
|
|
$topic_title = $this->clean_topic_title($topic_data['topic_title']); |
142
|
|
|
|
143
|
|
|
// If the cleaned up topic_title is empty, no need to continue |
144
|
|
|
if (empty($topic_title)) |
145
|
|
|
{ |
146
|
|
|
return; |
147
|
|
|
} |
148
|
|
|
|
149
|
|
|
// Get stored sensitivity value and divide by 10. In query it should be a number between 0.0 to 1.0. |
150
|
|
|
$sensitivity = $this->config->offsetExists('similar_topics_sense') ? $this->config['similar_topics_sense'] / 10 : '0.5'; |
151
|
|
|
|
152
|
|
|
// Similar Topics SQL query is generated in similar topics driver |
153
|
|
|
$sql_array = $this->similartopics->get_query($topic_data['topic_id'], $topic_title, $this->config['similar_topics_time'], $sensitivity); |
154
|
|
|
|
155
|
|
|
// Add topic tracking data to the query (only if query caching is off) |
156
|
|
|
if ($this->user->data['is_registered'] && $this->config['load_db_lastread'] && !$this->config['similar_topics_cache']) |
157
|
|
|
{ |
158
|
|
|
$sql_array['LEFT_JOIN'][] = array('FROM' => array(TOPICS_TRACK_TABLE => 'tt'), 'ON' => 'tt.topic_id = t.topic_id AND tt.user_id = ' . $this->user->data['user_id']); |
159
|
|
|
$sql_array['LEFT_JOIN'][] = array('FROM' => array(FORUMS_TRACK_TABLE => 'ft'), 'ON' => 'ft.forum_id = f.forum_id AND ft.user_id = ' . $this->user->data['user_id']); |
160
|
|
|
$sql_array['SELECT'] .= ', tt.mark_time, ft.mark_time as f_mark_time'; |
161
|
|
|
} |
162
|
|
|
else if ($this->config['load_anon_lastread'] || $this->user->data['is_registered']) |
163
|
|
|
{ |
164
|
|
|
// Cookie based tracking copied from search.php |
165
|
|
|
$tracking_topics = $this->request->variable($this->config['cookie_name'] . '_track', '', true, \phpbb\request\request_interface::COOKIE); |
166
|
|
|
$tracking_topics = $tracking_topics ? tracking_unserialize($tracking_topics) : array(); |
167
|
|
|
} |
168
|
|
|
|
169
|
|
|
// We need to exclude passworded forums so we do not leak the topic title |
170
|
|
|
$passworded_forums = $this->user->get_passworded_forums(); |
171
|
|
|
|
172
|
|
|
// See if the admin set this forum to only search a specific group of other forums, and include them |
173
|
|
|
if (!empty($topic_data['similar_topic_forums'])) |
174
|
|
|
{ |
175
|
|
|
// Remove any passworded forums from this group of forums we will be searching |
176
|
|
|
$included_forums = array_diff(json_decode($topic_data['similar_topic_forums'], true), $passworded_forums); |
177
|
|
|
// if there's nothing left to display (user has no access to the forums we want to search) |
178
|
|
|
if (empty($included_forums)) |
179
|
|
|
{ |
180
|
|
|
return; |
181
|
|
|
} |
182
|
|
|
|
183
|
|
|
$sql_array['WHERE'] .= ' AND ' . $this->db->sql_in_set('f.forum_id', $included_forums); |
184
|
|
|
} |
185
|
|
|
// Otherwise exclude any ignored forums |
186
|
|
|
else |
187
|
|
|
{ |
188
|
|
|
// Remove any passworded forums |
189
|
|
|
if (count($passworded_forums)) |
190
|
|
|
{ |
191
|
|
|
$sql_array['WHERE'] .= ' AND ' . $this->db->sql_in_set('f.forum_id', $passworded_forums, true); |
192
|
|
|
} |
193
|
|
|
|
194
|
|
|
$sql_array['WHERE'] .= ' AND f.similar_topics_ignore = 0'; |
195
|
|
|
} |
196
|
|
|
|
197
|
|
|
/** |
198
|
|
|
* Event to modify the sql_array for similar topics |
199
|
|
|
* |
200
|
|
|
* @event vse.similartopics.get_topic_data |
201
|
|
|
* @var array sql_array SQL array to get similar topics data |
202
|
|
|
* @since 1.3.0 |
203
|
|
|
*/ |
204
|
|
|
$vars = array('sql_array'); |
205
|
|
|
extract($this->dispatcher->trigger_event('vse.similartopics.get_topic_data', compact($vars))); |
206
|
|
|
|
207
|
|
|
$rowset = array(); |
208
|
|
|
|
209
|
|
|
$sql = $this->db->sql_build_query('SELECT', $sql_array); |
210
|
|
|
$result = $this->db->sql_query_limit($sql, $this->config['similar_topics_limit'], 0, $this->config['similar_topics_cache']); |
211
|
|
|
while ($row = $this->db->sql_fetchrow($result)) |
212
|
|
|
{ |
213
|
|
|
$rowset[(int) $row['topic_id']] = $row; |
214
|
|
|
} |
215
|
|
|
$this->db->sql_freeresult($result); |
216
|
|
|
|
217
|
|
|
// Grab icons |
218
|
|
|
$icons = $this->cache->obtain_icons(); |
219
|
|
|
|
220
|
|
|
/** |
221
|
|
|
* Modify the rowset data for similar topics |
222
|
|
|
* |
223
|
|
|
* @event vse.similartopics.modify_rowset |
224
|
|
|
* @var array rowset Array with the search results data |
225
|
|
|
* @since 1.4.2 |
226
|
|
|
*/ |
227
|
|
|
$vars = array('rowset'); |
228
|
|
|
extract($this->dispatcher->trigger_event('vse.similartopics.modify_rowset', compact($vars))); |
229
|
|
|
|
230
|
|
|
foreach ($rowset as $row) |
231
|
|
|
{ |
232
|
|
|
$similar_forum_id = (int) $row['forum_id']; |
233
|
|
|
$similar_topic_id = (int) $row['topic_id']; |
234
|
|
|
|
235
|
|
|
if ($this->auth->acl_get('f_read', $similar_forum_id)) |
236
|
|
|
{ |
237
|
|
|
// Get topic tracking info |
238
|
|
|
if ($this->user->data['is_registered'] && $this->config['load_db_lastread'] && !$this->config['similar_topics_cache']) |
239
|
|
|
{ |
240
|
|
|
$topic_tracking_info = get_topic_tracking($similar_forum_id, $similar_topic_id, $rowset, array($similar_forum_id => $row['f_mark_time'])); |
241
|
|
|
} |
242
|
|
|
else if ($this->config['load_anon_lastread'] || $this->user->data['is_registered']) |
243
|
|
|
{ |
244
|
|
|
$topic_tracking_info = get_complete_topic_tracking($similar_forum_id, $similar_topic_id); |
245
|
|
|
|
246
|
|
|
if (!$this->user->data['is_registered']) |
247
|
|
|
{ |
248
|
|
|
$this->user->data['user_lastmark'] = isset($tracking_topics['l']) ? ((int) base_convert($tracking_topics['l'], 36, 10) + (int) $this->config['board_startdate']) : 0; |
249
|
|
|
} |
250
|
|
|
} |
251
|
|
|
|
252
|
|
|
// Replies |
253
|
|
|
$replies = $this->content_visibility->get_count('topic_posts', $row, $similar_forum_id) - 1; |
254
|
|
|
|
255
|
|
|
// Get folder img, topic status/type related information |
256
|
|
|
$folder_img = $folder_alt = $topic_type = ''; |
257
|
|
|
$unread_topic = isset($topic_tracking_info[$similar_topic_id]) && $row['topic_last_post_time'] > $topic_tracking_info[$similar_topic_id]; |
258
|
|
|
topic_status($row, $replies, $unread_topic, $folder_img, $folder_alt, $topic_type); |
259
|
|
|
|
260
|
|
|
$topic_unapproved = $row['topic_visibility'] == ITEM_UNAPPROVED && $this->auth->acl_get('m_approve', $similar_forum_id); |
261
|
|
|
$posts_unapproved = $row['topic_visibility'] == ITEM_APPROVED && $row['topic_posts_unapproved'] && $this->auth->acl_get('m_approve', $similar_forum_id); |
262
|
|
|
$u_mcp_queue = ($topic_unapproved || $posts_unapproved) ? append_sid("{$this->root_path}mcp.{$this->php_ext}", 'i=queue&mode=' . ($topic_unapproved ? 'approve_details' : 'unapproved_posts') . "&t=$similar_topic_id", true, $this->user->session_id) : ''; |
263
|
|
|
|
264
|
|
|
$base_url = append_sid("{$this->root_path}viewtopic.{$this->php_ext}", 'f=' . $similar_forum_id . '&t=' . $similar_topic_id); |
265
|
|
|
|
266
|
|
|
$topic_row = array( |
267
|
|
|
'TOPIC_AUTHOR_FULL' => get_username_string('full', $row['topic_poster'], $row['topic_first_poster_name'], $row['topic_first_poster_colour']), |
268
|
|
|
'FIRST_POST_TIME' => $this->user->format_date($row['topic_time']), |
269
|
|
|
'LAST_POST_TIME' => $this->user->format_date($row['topic_last_post_time']), |
270
|
|
|
'LAST_POST_AUTHOR_FULL' => get_username_string('full', $row['topic_last_poster_id'], $row['topic_last_poster_name'], $row['topic_last_poster_colour']), |
271
|
|
|
|
272
|
|
|
'TOPIC_REPLIES' => $replies, |
273
|
|
|
'TOPIC_VIEWS' => $row['topic_views'], |
274
|
|
|
'TOPIC_TITLE' => censor_text($row['topic_title']), |
275
|
|
|
'FORUM_TITLE' => $row['forum_name'], |
276
|
|
|
|
277
|
|
|
'TOPIC_IMG_STYLE' => $folder_img, |
278
|
|
|
'TOPIC_FOLDER_IMG' => $this->user->img($folder_img, $folder_alt), |
279
|
|
|
'TOPIC_FOLDER_IMG_ALT' => $this->user->lang($folder_alt), |
280
|
|
|
|
281
|
|
|
'TOPIC_ICON_IMG' => (!empty($icons[$row['icon_id']])) ? $icons[$row['icon_id']]['img'] : '', |
282
|
|
|
'TOPIC_ICON_IMG_WIDTH' => (!empty($icons[$row['icon_id']])) ? $icons[$row['icon_id']]['width'] : '', |
283
|
|
|
'TOPIC_ICON_IMG_HEIGHT' => (!empty($icons[$row['icon_id']])) ? $icons[$row['icon_id']]['height'] : '', |
284
|
|
|
'ATTACH_ICON_IMG' => ($this->auth->acl_get('u_download') && $this->auth->acl_get('f_download', $similar_forum_id) && $row['topic_attachment']) ? $this->user->img('icon_topic_attach', $this->user->lang('TOTAL_ATTACHMENTS')) : '', |
285
|
|
|
'UNAPPROVED_IMG' => ($topic_unapproved || $posts_unapproved) ? $this->user->img('icon_topic_unapproved', $topic_unapproved ? 'TOPIC_UNAPPROVED' : 'POSTS_UNAPPROVED') : '', |
286
|
|
|
|
287
|
|
|
'S_UNREAD_TOPIC' => $unread_topic, |
288
|
|
|
'S_TOPIC_REPORTED' => !empty($row['topic_reported']) && $this->auth->acl_get('m_report', $similar_forum_id), |
289
|
|
|
'S_TOPIC_UNAPPROVED' => $topic_unapproved, |
290
|
|
|
'S_POSTS_UNAPPROVED' => $posts_unapproved, |
291
|
|
|
'S_HAS_POLL' => (bool) $row['poll_start'], |
292
|
|
|
|
293
|
|
|
'U_NEWEST_POST' => append_sid("{$this->root_path}viewtopic.{$this->php_ext}", 'f=' . $similar_forum_id . '&t=' . $similar_topic_id . '&view=unread') . '#unread', |
294
|
|
|
'U_LAST_POST' => append_sid("{$this->root_path}viewtopic.{$this->php_ext}", 'f=' . $similar_forum_id . '&t=' . $similar_topic_id . '&p=' . $row['topic_last_post_id']) . '#p' . $row['topic_last_post_id'], |
295
|
|
|
'U_VIEW_TOPIC' => append_sid("{$this->root_path}viewtopic.{$this->php_ext}", 'f=' . $similar_forum_id . '&t=' . $similar_topic_id), |
296
|
|
|
'U_VIEW_FORUM' => append_sid("{$this->root_path}viewforum.{$this->php_ext}", 'f=' . $similar_forum_id), |
297
|
|
|
'U_MCP_REPORT' => append_sid("{$this->root_path}mcp.{$this->php_ext}", 'i=reports&mode=reports&f=' . $similar_forum_id . '&t=' . $similar_topic_id, true, $this->user->session_id), |
298
|
|
|
'U_MCP_QUEUE' => $u_mcp_queue, |
299
|
|
|
); |
300
|
|
|
|
301
|
|
|
/** |
302
|
|
|
* Event to modify the similar topics template block |
303
|
|
|
* |
304
|
|
|
* @event vse.similartopics.modify_topicrow |
305
|
|
|
* @var array row Array with similar topic data |
306
|
|
|
* @var array topic_row Template block array |
307
|
|
|
* @since 1.3.0 |
308
|
|
|
*/ |
309
|
|
|
$vars = array('row', 'topic_row'); |
310
|
|
|
extract($this->dispatcher->trigger_event('vse.similartopics.modify_topicrow', compact($vars))); |
311
|
|
|
|
312
|
|
|
$this->template->assign_block_vars('similar', $topic_row); |
313
|
|
|
|
314
|
|
|
$this->pagination->generate_template_pagination($base_url, 'similar.pagination', 'start', $replies + 1, $this->config['posts_per_page'], 1, true, true); |
315
|
|
|
} |
316
|
|
|
} |
317
|
|
|
|
318
|
|
|
$this->user->add_lang_ext('vse/similartopics', 'similar_topics'); |
319
|
|
|
|
320
|
|
|
$this->template->assign_vars(array( |
321
|
|
|
'L_SIMILAR_TOPICS' => $this->user->lang('SIMILAR_TOPICS'), |
322
|
|
|
'NEWEST_POST_IMG' => $this->user->img('icon_topic_newest', 'VIEW_NEWEST_POST'), |
323
|
|
|
'LAST_POST_IMG' => $this->user->img('icon_topic_latest', 'VIEW_LATEST_POST'), |
324
|
|
|
'REPORTED_IMG' => $this->user->img('icon_topic_reported', 'TOPIC_REPORTED'), |
325
|
|
|
'POLL_IMG' => $this->user->img('icon_topic_poll', 'TOPIC_POLL'), |
326
|
|
|
'S_PST_BRANCH' => phpbb_version_compare(max($this->config['phpbb_version'], PHPBB_VERSION), '3.2.0-dev', '<') ? '31x' : '32x', |
327
|
|
|
)); |
328
|
|
|
} |
329
|
|
|
|
330
|
|
|
/** |
331
|
|
|
* Clean topic title (and if needed, ignore-words) |
332
|
|
|
* |
333
|
|
|
* @access public |
334
|
|
|
* @param string $text The topic title |
335
|
|
|
* @return string The topic title |
336
|
|
|
*/ |
337
|
|
|
public function clean_topic_title($text) |
338
|
|
|
{ |
339
|
|
|
// Strip quotes, ampersands |
340
|
|
|
$text = str_replace(array('"', '&'), '', $text); |
341
|
|
|
|
342
|
|
|
if (!$this->english_lang() || $this->has_ignore_words()) |
343
|
|
|
{ |
344
|
|
|
$text = $this->strip_stop_words($text); |
345
|
|
|
} |
346
|
|
|
|
347
|
|
|
return $text; |
348
|
|
|
} |
349
|
|
|
|
350
|
|
|
/** |
351
|
|
|
* Remove any non-english and/or custom defined ignore-words |
352
|
|
|
* |
353
|
|
|
* @access protected |
354
|
|
|
* @param string $text The topic title |
355
|
|
|
* @return string The topic title |
356
|
|
|
*/ |
357
|
|
|
protected function strip_stop_words($text) |
358
|
|
|
{ |
359
|
|
|
$words = array(); |
360
|
|
|
|
361
|
|
|
// If non-English, look for a list of stop-words to be ignored |
362
|
|
|
// in either the core or the extension (deprecated from core) |
363
|
|
|
if (!$this->english_lang()) |
364
|
|
|
{ |
365
|
|
|
if (file_exists($search_ignore_words = "{$this->user->lang_path}{$this->user->lang_name}/search_ignore_words.{$this->php_ext}") || |
366
|
|
|
file_exists($search_ignore_words = "{$this->root_path}ext/vse/similartopics/language/{$this->user->lang_name}/search_ignore_words.{$this->php_ext}")) |
367
|
|
|
{ |
368
|
|
|
include($search_ignore_words); |
369
|
|
|
} |
370
|
|
|
} |
371
|
|
|
|
372
|
|
|
if ($this->has_ignore_words()) |
373
|
|
|
{ |
374
|
|
|
// Merge any custom defined ignore words from the ACP to the stop-words array |
375
|
|
|
$words = array_merge($this->make_word_array($this->config['similar_topics_words']), $words); |
376
|
|
|
} |
377
|
|
|
|
378
|
|
|
// Remove stop-words from the topic title text |
379
|
|
|
$words = array_diff($this->make_word_array($text), $words); |
380
|
|
|
|
381
|
|
|
// Convert our words array back to a string |
382
|
|
|
return implode(' ', $words); |
383
|
|
|
} |
384
|
|
|
|
385
|
|
|
/** |
386
|
|
|
* Helper function to split string into an array of words |
387
|
|
|
* |
388
|
|
|
* @access protected |
389
|
|
|
* @param string $text String of plain text words |
390
|
|
|
* @return array Array of plaintext words |
391
|
|
|
*/ |
392
|
|
|
protected function make_word_array($text) |
393
|
|
|
{ |
394
|
|
|
// Strip out any non-alpha-numeric characters using PCRE regex syntax |
395
|
|
|
$text = trim(preg_replace('#[^\p{L}\p{N}]+#u', ' ', $text)); |
396
|
|
|
|
397
|
|
|
$words = explode(' ', utf8_strtolower($text)); |
398
|
|
|
foreach ($words as $key => $word) |
399
|
|
|
{ |
400
|
|
|
// Strip words of 2 characters or less |
401
|
|
|
if (utf8_strlen(trim($word)) < 3) |
402
|
|
|
{ |
403
|
|
|
unset($words[$key]); |
404
|
|
|
} |
405
|
|
|
} |
406
|
|
|
|
407
|
|
|
return $words; |
408
|
|
|
} |
409
|
|
|
|
410
|
|
|
/** |
411
|
|
|
* Check if English is the current user's language |
412
|
|
|
* |
413
|
|
|
* @access protected |
414
|
|
|
* @return bool True if lang is 'en' or 'en_us', false otherwise |
415
|
|
|
*/ |
416
|
|
|
protected function english_lang() |
417
|
|
|
{ |
418
|
|
|
return ($this->user->lang_name === 'en' || $this->user->lang_name === 'en_us'); |
419
|
|
|
} |
420
|
|
|
|
421
|
|
|
/** |
422
|
|
|
* Check if custom ignore words have been defined for similar topics |
423
|
|
|
* |
424
|
|
|
* @access protected |
425
|
|
|
* @return bool True or false |
426
|
|
|
*/ |
427
|
|
|
protected function has_ignore_words() |
428
|
|
|
{ |
429
|
|
|
return !empty($this->config['similar_topics_words']); |
430
|
|
|
} |
431
|
|
|
} |
432
|
|
|
|