PHP ID único
uniqid ([ string $prefix = "" [, bool $more_entropy = FALSE ]] ) : string
Calm Cassowary
uniqid ([ string $prefix = "" [, bool $more_entropy = FALSE ]] ) : stringfunction gen_uid($l=10){
return substr(str_shuffle("0123456789abcdefghijklmnopqrstuvwxyz"), 0, $l);
}