Re: Creating alphanumeric id for a table

I don´t know if it´d be the right way, but what about using trigger in this case? "aveev" <nashrullah_anas@yahoo.com> escreveu na mensagem news:25391939.post@talk.nabble.com... > > I want to create user generated id like this : > AAA0001 > AAA0002 > ... > AAA0009 > AAA0010 > > where the id consists of 3 alphanumeric characters and 4 numerical digits > in > the beginning (for numerical digit, it can grow like this AAA10001). I try > to use php script to generate id like this, where I use the following > script. > > <? > function generate_id($num) { > $start_dig = 4; > $num_dig = strlen($num); > > $id = $num; > if($num_dig <= $start_dig) { > $num_zero = $start_dig - $num_dig; > > for($i=0;$i< $num_zero; $i++) { > $id = '0' . $id; > } > } > $id = 'AAA' . $id; > return $id; > } > > $app_id = generate_id(1); > > ?> > > I assume that I can get increment value/sequence from db (I used harcoded > increment value in the code above (generate_id(1))), > but I don't know how I can get this incremental value from db.I use mysql > 5.0. > Or has anyone had another solution to create this alphanumeric id ? > > Any help would be much appreciated > Thanks > -- > View this message in context: > > http://www.nabble.com/Creating-alphanumeric-id-for-a-table-tp25391939p25391939.html* 7éÁ½úÈ > âߧÓì > Sent from the PHP - General mailing list archive at Nabble.com. > >