How catch variable value from trigger

Question

situation:
I have trigger which is fired after update on any value in table aaa, trigger is used to archive all values in updated row from table aaa to table aaa_archive, in trigger is calculated sys_guid() ID for archive record ID, I need to get this ID, and forward to php code, because of some filesystem archive operations with files(files are archvived as well, and I need create connection between this file and archived record in DB).
It is needed to use trigger instead of some own pl/sql archive procedure.
Can somebody help?
Thx :)

Answer 1

Seems to me like you're not grasping how an INSERT works.
SQL> create table foo_tab( guid varchar2(100), n number );
Table created.
SQL>
SQL> create or replace trigger ins_foo_tab
2 before insert on foo_tab
3 for each row
4 begin
5 :new.guid := SYS_GUID();
6 end;
7 /
Trigger created.
SQL>
SQL>
SQL> insert into foo_tab( n ) values( 1 );
1 row created.
SQL>
SQL> select * from foo_tab;
GUID N
42D0B3DA3E22D07EE040FB0A3A5D4C40 1
SQL>
SQL> -- from php
SQL> var guid varchar2(100)
SQL> insert into foo_tab( n ) values( 2 ) returning guid into :guid;
1 row created.
SQL> commit;
Commit complete.
SQL> -- from PHP
SQL> print guid
GUID
42D0B3DA3E23D07EE040FB0A3A5D4C40
SQL>
SQL> select * from foo_tab;
GUID N
42D0B3DA3E22D07EE040FB0A3A5D4C40 1
42D0B3DA3E23D07EE040FB0A3A5D4C40 2
SQL>