Verzeichnisstruktur phpBB-3.2.0
- Veröffentlicht
- 06.01.2017
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db_text.php
001 <?php
002 /**
003 *
004 * This file is part of the phpBB Forum Software package.
005 *
006 * @copyright (c) phpBB Limited <https://www.phpbb.com>
007 * @license GNU General Public License, version 2 (GPL-2.0)
008 *
009 * For full copyright and license information, please see
010 * the docs/CREDITS.txt file.
011 *
012 */
013
014 namespace phpbb\config;
015
016 /**
017 * Manages configuration options with an arbitrary length value stored in a TEXT
018 * column. In constrast to class \phpbb\config\db, values are never cached and
019 * prefetched, but every get operation sends a query to the database.
020 */
021 class db_text
022 {
023 /**
024 * Database connection
025 * @var \phpbb\db\driver\driver_interface
026 */
027 protected $db;
028
029 /**
030 * Name of the database table used.
031 * @var string
032 */
033 protected $table;
034
035 /**
036 * @param \phpbb\db\driver\driver_interface $db Database connection
037 * @param string $table Table name
038 */
039 public function __construct(\phpbb\db\driver\driver_interface $db, $table)
040 {
041 $this->db = $db;
042 $this->table = $this->db->sql_escape($table);
043 }
044
045 /**
046 * Sets the configuration option with the name $key to $value.
047 *
048 * @param string $key The configuration option's name
049 * @param string $value New configuration value
050 *
051 * @return null
052 */
053 public function set($key, $value)
054 {
055 $this->set_array(array($key => $value));
056 }
057
058 /**
059 * Gets the configuration value for the name $key.
060 *
061 * @param string $key The configuration option's name
062 *
063 * @return string|null String result on success
064 * null if there is no such option
065 */
066 public function get($key)
067 {
068 $map = $this->get_array(array($key));
069
070 return isset($map[$key]) ? $map[$key] : null;
071 }
072
073 /**
074 * Removes the configuration option with the name $key.
075 *
076 * @param string $key The configuration option's name
077 *
078 * @return null
079 */
080 public function delete($key)
081 {
082 $this->delete_array(array($key));
083 }
084
085 /**
086 * Mass set configuration options: Receives an associative array,
087 * treats array keys as configuration option names and associated
088 * array values as their configuration option values.
089 *
090 * @param array $map Map from configuration names to values
091 *
092 * @return null
093 */
094 public function set_array(array $map)
095 {
096 $this->db->sql_transaction('begin');
097
098 foreach ($map as $key => $value)
099 {
100 $sql = 'UPDATE ' . $this->table . "
101 SET config_value = '" . $this->db->sql_escape($value) . "'
102 WHERE config_name = '" . $this->db->sql_escape($key) . "'";
103 $this->db->sql_query($sql);
104
105 if (!$this->db->sql_affectedrows())
106 {
107 $sql = 'INSERT INTO ' . $this->table . ' ' . $this->db->sql_build_array('INSERT', array(
108 'config_name' => (string) $key,
109 'config_value' => (string) $value,
110 ));
111 $this->db->sql_query($sql);
112 }
113 }
114
115 $this->db->sql_transaction('commit');
116 }
117
118 /**
119 * Mass get configuration options: Receives a set of configuration
120 * option names and returns the result as a key => value map where
121 * array keys are configuration option names and array values are
122 * associated config option values.
123 *
124 * @param array $keys Set of configuration option names
125 *
126 * @return array Map from configuration names to values
127 */
128 public function get_array(array $keys)
129 {
130 $sql = 'SELECT *
131 FROM ' . $this->table . '
132 WHERE ' . $this->db->sql_in_set('config_name', $keys, false, true);
133 $result = $this->db->sql_query($sql);
134
135 $map = array();
136 while ($row = $this->db->sql_fetchrow($result))
137 {
138 $map[$row['config_name']] = $row['config_value'];
139 }
140 $this->db->sql_freeresult($result);
141
142 return $map;
143 }
144
145 /**
146 * Mass delete configuration options.
147 *
148 * @param array $keys Set of configuration option names
149 *
150 * @return null
151 */
152 public function delete_array(array $keys)
153 {
154 $sql = 'DELETE
155 FROM ' . $this->table . '
156 WHERE ' . $this->db->sql_in_set('config_name', $keys, false, true);
157 $this->db->sql_query($sql);
158 }
159 }
160