|
1
|
|
|
<?php |
|
2
|
|
|
/** |
|
3
|
|
|
* |
|
4
|
|
|
* Precise Similar Topics |
|
5
|
|
|
* |
|
6
|
|
|
* @copyright (c) 2018 Matt Friedman |
|
7
|
|
|
* @license GNU General Public License, version 2 (GPL-2.0) |
|
8
|
|
|
* |
|
9
|
|
|
*/ |
|
10
|
|
|
|
|
11
|
|
|
namespace vse\similartopics\driver; |
|
12
|
|
|
|
|
13
|
|
|
class mysqli implements driver_interface |
|
14
|
|
|
{ |
|
15
|
|
|
/** @var \phpbb\db\driver\driver_interface */ |
|
16
|
|
|
protected $db; |
|
17
|
|
|
|
|
18
|
|
|
/** @var string */ |
|
19
|
|
|
protected $engine; |
|
20
|
|
|
|
|
21
|
|
|
/** |
|
22
|
|
|
* mysql constructor. |
|
23
|
|
|
* |
|
24
|
|
|
* @param \phpbb\db\driver\driver_interface $db |
|
25
|
|
|
*/ |
|
26
|
|
|
public function __construct(\phpbb\db\driver\driver_interface $db) |
|
27
|
|
|
{ |
|
28
|
|
|
$this->db = $db; |
|
29
|
|
|
} |
|
30
|
|
|
|
|
31
|
|
|
/** |
|
32
|
|
|
* {@inheritdoc} |
|
33
|
|
|
*/ |
|
34
|
|
|
public function get_name() |
|
35
|
|
|
{ |
|
36
|
|
|
return 'mysqli'; |
|
37
|
|
|
} |
|
38
|
|
|
|
|
39
|
|
|
/** |
|
40
|
|
|
* {@inheritdoc} |
|
41
|
|
|
*/ |
|
42
|
|
|
public function get_type() |
|
43
|
|
|
{ |
|
44
|
|
|
return 'mysql'; |
|
45
|
|
|
} |
|
46
|
|
|
|
|
47
|
|
|
/** |
|
48
|
|
|
* {@inheritdoc} |
|
49
|
|
|
*/ |
|
50
|
|
|
public function get_query($topic_id, $topic_title, $length, $sensitivity) |
|
51
|
|
|
{ |
|
52
|
|
|
return array( |
|
53
|
|
|
'SELECT' => "f.forum_id, f.forum_name, t.*, |
|
54
|
|
|
MATCH (t.topic_title) AGAINST ('" . $this->db->sql_escape($topic_title) . "') AS score", |
|
55
|
|
|
|
|
56
|
|
|
'FROM' => array( |
|
57
|
|
|
TOPICS_TABLE => 't', |
|
58
|
|
|
), |
|
59
|
|
|
'LEFT_JOIN' => array( |
|
60
|
|
|
array( |
|
61
|
|
|
'FROM' => array(FORUMS_TABLE => 'f'), |
|
62
|
|
|
'ON' => 'f.forum_id = t.forum_id', |
|
63
|
|
|
), |
|
64
|
|
|
), |
|
65
|
|
|
'WHERE' => "MATCH (t.topic_title) AGAINST ('" . $this->db->sql_escape($topic_title) . "') >= " . (float) $sensitivity . ' |
|
66
|
|
|
AND t.topic_status <> ' . ITEM_MOVED . ' |
|
67
|
|
|
AND t.topic_visibility = ' . ITEM_APPROVED . ' |
|
68
|
|
|
AND t.topic_time > (UNIX_TIMESTAMP() - ' . (int) $length . ') |
|
69
|
|
|
AND t.topic_id <> ' . (int) $topic_id, |
|
70
|
|
|
); |
|
71
|
|
|
} |
|
72
|
|
|
|
|
73
|
|
|
/** |
|
74
|
|
|
* Check if the database is using MySQL |
|
75
|
|
|
* |
|
76
|
|
|
* @access public |
|
77
|
|
|
* @return bool True if is mysql, false otherwise |
|
78
|
|
|
*/ |
|
79
|
|
|
public function is_mysql() |
|
80
|
|
|
{ |
|
81
|
|
|
return ($this->db->get_sql_layer() === 'mysql4' || $this->db->get_sql_layer() === 'mysqli'); |
|
82
|
|
|
} |
|
83
|
|
|
|
|
84
|
|
|
/** |
|
85
|
|
|
* {@inheritdoc} |
|
86
|
|
|
*/ |
|
87
|
|
|
public function is_supported() |
|
88
|
|
|
{ |
|
89
|
|
|
// FULLTEXT is supported on InnoDB since MySQL 5.6.4 according to |
|
90
|
|
|
// http://dev.mysql.com/doc/refman/5.6/en/innodb-storage-engine.html |
|
91
|
|
|
return $this->is_mysql() && ($this->get_engine() === 'myisam' || ($this->get_engine() === 'innodb' && phpbb_version_compare($this->db->sql_server_info(true), '5.6.4', '>='))); |
|
92
|
|
|
} |
|
93
|
|
|
|
|
94
|
|
|
/** |
|
95
|
|
|
* {@inheritdoc} |
|
96
|
|
|
*/ |
|
97
|
|
|
public function is_index($field = 'topic_title') |
|
98
|
|
|
{ |
|
99
|
|
|
$is_index = false; |
|
100
|
|
|
|
|
101
|
|
|
$sql = 'SHOW INDEX |
|
102
|
|
|
FROM ' . TOPICS_TABLE; |
|
103
|
|
|
$result = $this->db->sql_query($sql); |
|
104
|
|
|
|
|
105
|
|
|
while ($row = $this->db->sql_fetchrow($result)) |
|
106
|
|
|
{ |
|
107
|
|
|
// Older MySQL versions didn't use Index_type, so fallback to Comment |
|
108
|
|
|
$index_type = isset($row['Index_type']) ? $row['Index_type'] : $row['Comment']; |
|
109
|
|
|
|
|
110
|
|
|
if ($index_type === 'FULLTEXT' && $row['Key_name'] === $field) |
|
111
|
|
|
{ |
|
112
|
|
|
$is_index = true; |
|
113
|
|
|
break; |
|
114
|
|
|
} |
|
115
|
|
|
} |
|
116
|
|
|
|
|
117
|
|
|
$this->db->sql_freeresult($result); |
|
118
|
|
|
|
|
119
|
|
|
return $is_index; |
|
120
|
|
|
} |
|
121
|
|
|
|
|
122
|
|
|
/** |
|
123
|
|
|
* {@inheritdoc} |
|
124
|
|
|
*/ |
|
125
|
|
|
public function create_fulltext_index($field = 'topic_title') |
|
126
|
|
|
{ |
|
127
|
|
View Code Duplication |
if (!$this->is_index($field)) |
|
128
|
|
|
{ |
|
129
|
|
|
$sql = 'ALTER TABLE ' . TOPICS_TABLE . ' ADD FULLTEXT (' . $field . ')'; |
|
130
|
|
|
$this->db->sql_query($sql); |
|
131
|
|
|
} |
|
132
|
|
|
} |
|
133
|
|
|
|
|
134
|
|
|
/** |
|
135
|
|
|
* Get the database storage engine name |
|
136
|
|
|
* |
|
137
|
|
|
* @access public |
|
138
|
|
|
* @return string The storage engine name |
|
139
|
|
|
*/ |
|
140
|
|
|
public function get_engine() |
|
141
|
|
|
{ |
|
142
|
|
|
return isset($this->engine) ? $this->engine : $this->set_engine(); |
|
143
|
|
|
} |
|
144
|
|
|
|
|
145
|
|
|
/** |
|
146
|
|
|
* Set the database storage engine name |
|
147
|
|
|
* |
|
148
|
|
|
* @access public |
|
149
|
|
|
* @return string The storage engine name |
|
150
|
|
|
*/ |
|
151
|
|
|
public function set_engine() |
|
152
|
|
|
{ |
|
153
|
|
|
$this->engine = ''; |
|
154
|
|
|
|
|
155
|
|
|
if ($this->is_mysql()) |
|
156
|
|
|
{ |
|
157
|
|
|
$info = $this->get_table_info(); |
|
158
|
|
|
|
|
159
|
|
|
// Modern MySQL uses 'Engine', but older may still use 'Type' |
|
160
|
|
|
foreach (array('Engine', 'Type') as $name) |
|
161
|
|
|
{ |
|
162
|
|
|
if (isset($info[$name])) |
|
163
|
|
|
{ |
|
164
|
|
|
$this->engine = strtolower($info[$name]); |
|
165
|
|
|
break; |
|
166
|
|
|
} |
|
167
|
|
|
} |
|
168
|
|
|
} |
|
169
|
|
|
|
|
170
|
|
|
return $this->engine; |
|
171
|
|
|
} |
|
172
|
|
|
|
|
173
|
|
|
/** |
|
174
|
|
|
* Alter the database storage engine |
|
175
|
|
|
* |
|
176
|
|
|
* @access public |
|
177
|
|
|
* @param string $engine The storage engine, i.e.: MYISAM|INNODB |
|
178
|
|
|
* @return void |
|
179
|
|
|
*/ |
|
180
|
|
|
public function alter_engine($engine = 'MYISAM') |
|
181
|
|
|
{ |
|
182
|
|
|
// Alter the storage engine |
|
183
|
|
|
$sql = 'ALTER TABLE ' . TOPICS_TABLE . ' ENGINE = ' . $this->db->sql_escape(strtoupper($engine)); |
|
184
|
|
|
$this->db->sql_query($sql); |
|
185
|
|
|
} |
|
186
|
|
|
|
|
187
|
|
|
/** |
|
188
|
|
|
* Get topics table information |
|
189
|
|
|
* |
|
190
|
|
|
* @access protected |
|
191
|
|
|
* @return mixed Array with the table info, false if the table does not exist |
|
192
|
|
|
*/ |
|
193
|
|
|
protected function get_table_info() |
|
194
|
|
|
{ |
|
195
|
|
|
$result = $this->db->sql_query('SHOW TABLE STATUS LIKE \'' . TOPICS_TABLE . '\''); |
|
196
|
|
|
$info = $this->db->sql_fetchrow($result); |
|
197
|
|
|
$this->db->sql_freeresult($result); |
|
198
|
|
|
|
|
199
|
|
|
return $info; |
|
200
|
|
|
} |
|
201
|
|
|
} |
|
202
|
|
|
|
iMattPro /
similartopics
