Gazelle/sections/artist/delete_alias.php

<?
authorize();
if(!check_perms('torrents_edit')) { error(403); }

$AliasID = $_GET['aliasid'];

if(!is_number($AliasID)) {
	error(0);
}

$DB->query("SELECT aa.AliasID
			FROM artists_alias AS aa 
				JOIN artists_alias AS aa2 ON aa.ArtistID=aa2.ArtistID 
			WHERE aa.AliasID=".$AliasID);

if($DB->record_count() == 1) {
	//This is the last alias on the artist
	error("That alias is the last alias for that artist, removing it would cause bad things to happen.");
}

$DB->query("SELECT GroupID FROM torrents_artists WHERE AliasID='$AliasID'");
if($DB->record_count() > 0) {
	list($GroupID) = $DB->next_record();
	if($GroupID != 0) {
		error("That alias still has the group ($GroupID) attached, fix that first.");
	}
}

$DB->query("SELECT aa.ArtistID, ag.Name, aa.Name FROM artists_alias AS aa JOIN artists_group AS ag ON aa.ArtistID=ag.ArtistID WHERE aa.AliasID=".$AliasID);
list($ArtistID, $ArtistName, $AliasName) = $DB->next_record(MYSQLI_NUM, false);

$DB->query("DELETE FROM artists_alias WHERE AliasID='$AliasID'");
$DB->query("UPDATE artists_alias SET Redirect='0' WHERE Redirect='$AliasID'");

write_log("The alias ".$AliasID." (".$AliasName.") was removed from the artist ".$ArtistID." (".$ArtistName.") by user ".$LoggedUser['ID']." (".$LoggedUser['Username'].")");

header('Location: '.$_SERVER['HTTP_REFERER']);