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friendica_2019-12_sharedHos.../include/dbclean.php

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<?php
/**
* @file include/dbclean.php
* @brief The script is called from time to time to clean the database entries and remove orphaned data.
*/
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require_once("boot.php");
global $a, $db;
if(is_null($a))
$a = new App;
if(is_null($db)) {
@include(".htconfig.php");
require_once("include/dba.php");
$db = new dba($db_host, $db_user, $db_pass, $db_data);
unset($db_host, $db_user, $db_pass, $db_data);
}
load_config('config');
load_config('system');
remove_orphans();
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killme();
/**
* @brief Remove orphaned database entries
*/
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function remove_orphans() {
global $db;
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logger("Deleting orphaned data from thread table");
if ($db->q("SELECT `iid` FROM `thread` WHERE NOT EXISTS (SELECT `id` FROM `item` WHERE `item`.`parent` = `thread`.`iid`)", true)) {
logger("found thread orphans: ".$db->num_rows());
while ($orphan = $db->qfetch())
q("DELETE FROM `thread` WHERE `iid` = %d", intval($orphan["iid"]));
}
$db->qclose();
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logger("Deleting orphaned data from notify table");
if ($db->q("SELECT `iid` FROM `notify` WHERE NOT EXISTS (SELECT `id` FROM `item` WHERE `item`.`id` = `notify`.`iid`)", true)) {
logger("found notify orphans: ".$db->num_rows());
while ($orphan = $db->qfetch())
q("DELETE FROM `notify` WHERE `iid` = %d", intval($orphan["iid"]));
}
$db->qclose();
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logger("Deleting orphaned data from sign table");
if ($db->q("SELECT `iid` FROM `sign` WHERE NOT EXISTS (SELECT `id` FROM `item` WHERE `item`.`id` = `sign`.`iid`)", true)) {
logger("found sign orphans: ".$db->num_rows());
while ($orphan = $db->qfetch())
q("DELETE FROM `sign` WHERE `iid` = %d", intval($orphan["iid"]));
}
$db->qclose();
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logger("Deleting orphaned data from term table");
if ($db->q("SELECT `oid` FROM `term` WHERE NOT EXISTS (SELECT `id` FROM `item` WHERE `item`.`id` = `term`.`oid`)", true)) {
logger("found term orphans: ".$db->num_rows());
while ($orphan = $db->qfetch())
q("DELETE FROM `term` WHERE `oid` = %d", intval($orphan["oid"]));
}
$db->qclose();
// SELECT `id`, `received`, `created`, `guid` FROM `item` WHERE `uid` = 0 AND NOT EXISTS (SELECT `guid` FROM `item` AS `i` WHERE `item`.`guid` = `i`.`guid` AND `i`.`uid` != 0) LIMIT 1;
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logger("Done deleting orphaned data from tables");
}
?>