[cessil]

i created a stock called "IsNum" and when i cycle through each character in the string I use that and a check with .'s
this should help you get on the right path

pawn Код:

stock isnum(text[])
{
    new str[2];
    format(str,sizeof(str),"%s",text);
    if(!strcmp(str,"0",false)) return 1;
    if(strval(str[0]) == strval(str[1])) return 0;
    if(strval(text) >= 1) return 1;
    return 0;
}