friendica/include/PConfig.php

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2016-06-06 10:22:14 +02:00
<?php
/**
* @file include/PConfig.php
* @brief contains the class with methods for the management
* of the user configuration
*/
/**
* @brief Management of user configuration
*/
class PConfig {
/**
* @brief Loads all configuration values of a user's config family into a cached storage.
*
* All configuration values of the given user are stored in global cache
* which is available under the global variable $a->config[$uid].
*
* @param string $uid
* The user_id
* @param string $family
* The category of the configuration value
* @return void
*/
public static function load($uid,$family) {
global $a;
$r = q("SELECT `v`,`k` FROM `pconfig` WHERE `cat` = '%s' AND `uid` = %d",
dbesc($family),
intval($uid)
);
if(count($r)) {
foreach($r as $rr) {
$k = $rr['k'];
$a->config[$uid][$family][$k] = $rr['v'];
}
} else if ($family != 'config') {
// Negative caching
$a->config[$uid][$family] = "!<unset>!";
}
}
/**
* @brief Get a particular user's config variable given the category name
* ($family) and a key.
*
* Get a particular user's config value from the given category ($family)
* and the $key from a cached storage in $a->config[$uid].
*
* @param string $uid
* The user_id
* @param string $family
* The category of the configuration value
* @param string $key
* The configuration key to query
* @param boolean $instore
* Determines if the key already exists in the DB
* @return mixed Stored value or false if it does not exist
*/
public static function get($uid,$family, $key, $instore = false) {
global $a;
if(! $instore) {
// Looking if the whole family isn't set
if(isset($a->config[$uid][$family])) {
if($a->config[$uid][$family] === '!<unset>!') {
return false;
}
}
if(isset($a->config[$uid][$family][$key])) {
if($a->config[$uid][$family][$key] === '!<unset>!') {
return false;
}
return $a->config[$uid][$family][$key];
}
}
// If APC is enabled then fetch the data from there, else try XCache
/*if (function_exists("apc_fetch") AND function_exists("apc_exists"))
if (apc_exists($uid."|".$family."|".$key)) {
$val = apc_fetch($uid."|".$family."|".$key);
$a->config[$uid][$family][$key] = $val;
if ($val === '!<unset>!')
return false;
else
return $val;
}
elseif (function_exists("xcache_get") AND function_exists("xcache_isset"))
if (xcache_isset($uid."|".$family."|".$key)) {
$val = xcache_get($uid."|".$family."|".$key);
$a->config[$uid][$family][$key] = $val;
if ($val === '!<unset>!')
return false;
else
return $val;
}*/
$ret = q("SELECT `v` FROM `pconfig` WHERE `uid` = %d AND `cat` = '%s' AND `k` = '%s' LIMIT 1",
intval($uid),
dbesc($family),
dbesc($key)
);
if(count($ret)) {
$val = (preg_match("|^a:[0-9]+:{.*}$|s", $ret[0]['v'])?unserialize( $ret[0]['v']):$ret[0]['v']);
$a->config[$uid][$family][$key] = $val;
// If APC is enabled then store the data there, else try XCache
/*if (function_exists("apc_store"))
apc_store($uid."|".$family."|".$key, $val, 600);
elseif (function_exists("xcache_set"))
xcache_set($uid."|".$family."|".$key, $val, 600);*/
return $val;
}
else {
$a->config[$uid][$family][$key] = '!<unset>!';
// If APC is enabled then store the data there, else try XCache
/*if (function_exists("apc_store"))
apc_store($uid."|".$family."|".$key, '!<unset>!', 600);
elseif (function_exists("xcache_set"))
xcache_set($uid."|".$family."|".$key, '!<unset>!', 600);*/
}
return false;
}
/**
* @brief Sets a configuration value for a user
*
* Stores a config value ($value) in the category ($family) under the key ($key)
* for the user_id $uid.
*
* @note Please do not store booleans - convert to 0/1 integer values!
*
* @param string $uid
* The user_id
* @param string $family
* The category of the configuration value
* @param string $key
* The configuration key to set
* @param string $value
* The value to store
* @return mixed Stored $value or false
*/
public static function set($uid,$family,$key,$value) {
global $a;
// manage array value
$dbvalue = (is_array($value)?serialize($value):$value);
if(get_pconfig($uid,$family,$key,true) === false) {
$a->config[$uid][$family][$key] = $value;
$ret = q("INSERT INTO `pconfig` ( `uid`, `cat`, `k`, `v` ) VALUES ( %d, '%s', '%s', '%s' ) ",
intval($uid),
dbesc($family),
dbesc($key),
dbesc($dbvalue)
);
if($ret)
return $value;
return $ret;
}
$ret = q("UPDATE `pconfig` SET `v` = '%s' WHERE `uid` = %d AND `cat` = '%s' AND `k` = '%s'",
dbesc($dbvalue),
intval($uid),
dbesc($family),
dbesc($key)
);
$a->config[$uid][$family][$key] = $value;
// If APC is enabled then store the data there, else try XCache
/*if (function_exists("apc_store"))
apc_store($uid."|".$family."|".$key, $value, 600);
elseif (function_exists("xcache_set"))
xcache_set($uid."|".$family."|".$key, $value, 600);*/
if($ret)
return $value;
return $ret;
}
/**
* @brief Deletes the given key from the users's configuration.
*
* Removes the configured value from the stored cache in $a->config[$uid]
* and removes it from the database.
*
* @param string $uid The user_id
* @param string $family
* The category of the configuration value
* @param string $key
* The configuration key to delete
* @return mixed
*/
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public static function delete($uid,$family,$key) {
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global $a;
if(x($a->config[$uid][$family],$key))
unset($a->config[$uid][$family][$key]);
$ret = q("DELETE FROM `pconfig` WHERE `uid` = %d AND `cat` = '%s' AND `k` = '%s'",
intval($uid),
dbesc($family),
dbesc($key)
);
return $ret;
}
}