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<?php
/**
* Elgg installation
* Various functions to assist with installing and upgrading the system
*
* @package Elgg.Core
* @subpackage Installation
*/
/**
* Returns whether or not the database has been installed
*
* @return true|false Whether the database has been installed
*/
function is_db_installed() {
global $CONFIG;
if (isset($CONFIG->db_installed)) {
return $CONFIG->db_installed;
}
if ($dblink = get_db_link('read')) {
mysql_query("select name from {$CONFIG->dbprefix}datalists limit 1", $dblink);
if (mysql_errno($dblink) > 0) {
return false;
}
} else {
return false;
}
// Set flag if db is installed (if false then we want to check every time)
$CONFIG->db_installed = true;
return true;
}
/**
* Returns whether or not other settings have been set
*
* @return true|false Whether or not the rest of the installation has been followed through with
*/
function is_installed() {
global $CONFIG;
return datalist_get('installed');
}
/**
* Check that installation has completed and the database is populated.
*
* @throws InstallationException
* @return void
*/
function verify_installation() {
$installed = FALSE;
try {
$installed = is_installed();
} catch (DatabaseException $e) {}
if (!$installed) {
throw new InstallationException(elgg_echo('InstallationException:SiteNotInstalled'));
}
}
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