LOCK TABLES doesn't work how expected from browser

[zytica]

Here is my problem: i need to make a lock on a table from my database.(I'm using MySQL database server). When i work from my terminal, everithing is ok. It locks my table and if I try to insert a new row, gives me some error. But problem is that when I try to do the same thing from phpmyadmin or MySQL Query Browser, there is no effect. Can anybody explain me the reason?Thanks in advance!