3 * System Configuration Class
5 * @file include/Core/Config.php
7 * @brief Contains the class with methods for system configuration
9 namespace Friendica\Core;
11 use Friendica\Core\Config\IConfigAdapter;
12 use Friendica\Core\Config\IConfigCache;
15 * @brief Arbitrary system configuration storage
18 * If we ever would decide to return exactly the variable type as entered,
19 * we will have fun with the additional features. :-)
26 private static $adapter;
31 private static $config;
34 * Initialize the config with only the cache
36 * @param IConfigCache $config The configuration cache
38 public static function init($config)
40 self::$config = $config;
44 * Add the adapter for DB-backend
48 public static function setAdapter($adapter)
50 self::$adapter = $adapter;
54 * @brief Loads all configuration values of family into a cached storage.
56 * All configuration values of the system are stored in global cache
57 * which is available under the global variable self::$config
59 * @param string $family The category of the configuration value
63 public static function load($family = "config")
65 if (!isset(self::$adapter)) {
69 self::$adapter->load($family);
73 * @brief Get a particular user's config variable given the category name
74 * ($family) and a key.
76 * Get a particular config value from the given category ($family)
77 * and the $key from a cached storage in static::config[$uid].
78 * $instore is only used by the set_config function
79 * to determine if the key already exists in the DB
80 * If a key is found in the DB but doesn't exist in
81 * local config cache, pull it into the cache so we don't have
82 * to hit the DB again for this item.
84 * @param string $family The category of the configuration value
85 * @param string $key The configuration key to query
86 * @param mixed $default_value optional, The value to return if key is not set (default: null)
87 * @param boolean $refresh optional, If true the config is loaded from the db and not from the cache (default: false)
89 * @return mixed Stored value or null if it does not exist
91 public static function get($family, $key, $default_value = null, $refresh = false)
93 if (!isset(self::$adapter)) {
94 return self::$config->get($family, $key, $default_value);
97 return self::$adapter->get($family, $key, $default_value, $refresh);
101 * @brief Sets a configuration value for system config
103 * Stores a config value ($value) in the category ($family) under the key ($key)
104 * for the user_id $uid.
106 * Note: Please do not store booleans - convert to 0/1 integer values!
108 * @param string $family The category of the configuration value
109 * @param string $key The configuration key to set
110 * @param mixed $value The value to store
112 * @return bool Operation success
114 public static function set($family, $key, $value)
116 if (!isset(self::$adapter)) {
117 self::$config->set($family, $key, $value);
121 return self::$adapter->set($family, $key, $value);
125 * @brief Deletes the given key from the system configuration.
127 * Removes the configured value from the stored cache in Config::$config
128 * and removes it from the database.
130 * @param string $family The category of the configuration value
131 * @param string $key The configuration key to delete
135 public static function delete($family, $key)
137 if (!isset(self::$adapter)) {
138 self::$config->delete($family, $key);
141 return self::$adapter->delete($family, $key);