Remove items more memory friendly

src/Worker/RemoveContact.php

@@ -7,6 +7,7 @@ namespace Friendica\Worker;
 
 use Friendica\Database\DBA;
 use Friendica\Core\Protocol;
+use Friendica\Model\Item;
 
 require_once 'include/dba.php';
 
@@ -21,6 +22,15 @@ class RemoveContact {
 		}
 
 		// Now we delete the contact and all depending tables
+		$condition = ['contact-id' => $id];
+		do {
+			$items = Item::select(['id'], $condition, ['limit' => 100]);
+			while ($item = Item::fetch($items)) {
+				DBA::delete('item', ['id' => $item['id']]);
+			}
+			DBA::close($items);
+		} while (Item::exists($condition));
+
 		DBA::delete('contact', ['id' => $id]);
 	}
 }

src/Worker/RemoveUser.php

@@ -20,6 +20,13 @@ class RemoveUser {
 		}
 
 		// Now we delete all user items
-		Item::delete(['uid' => $uid], PRIORITY_LOW);
+		$condition = ['uid' => $uid, 'deleted' => false];
+		do {
+			$items = Item::select(['id'], $condition, ['limit' => 100]);
+			while ($item = Item::fetch($items)) {
+				Item::deleteById($item['id'], PRIORITY_LOW);
+			}
+			DBA::close($items);
+		} while (Item::exists($condition));
 	}
 }