strreplace

stock strreplace(str[], const find[], const rep[])
{
    new strpos, findlen = strlen(find), replen = strlen(rep);

    LOOP:
    strpos = strfind(str, find, false, strpos);
    if(strpos == -1) goto ENDLOOP;
    strdel(str, strpos, strpos + findlen);
    strins(str, rep, strpos, replen);
    goto LOOP;
    ENDLOOP:
}