note 15677 rejected from function.is-int by zak

I made this function to check if a string has only numeric characters. At first I thought is_int would work for that but it (how odd? hehe) doesn't work on strings (of course). Maybe there's an easyer or better way but this worked for me. function checknrst($nrst) { $allgood=true; for ($k=0; $k<strlen($nrst); $k++) { if (($stdnr[$k]!="0") && ((int)($stdnr[$k])==0)) $allgood=false; } return ($allgood); }