the material I see is here
https://www.cnblogs.com/gaoga.
where there is doubt
if($row){
if($nowtime>$row["token_exptime"]){ //24hour
$msg = ".";
}else{
mysql_query("update t_user set status=1 where id=".$row["id"]);
if(mysql_affected_rows($link)!=1) die(0);
$msg = "";
}
}else{
$msg = "error.";
}
echo $msg; if (mysql_affected_rows ($link)! = 1) die (0);
if there is username, in the database, the previous register.php will query the database and reply
echo "user name already exists, please change to another user name";
mysql_affected_rows ($link) can only be equal to 1 ha
this sentence will not be executed at all. Does it make sense to write it here?
its inherent logic is problematic. When mysql_affected_rows ($link)! = 1, then die (0)
can the database have been updated with, die (0) and report a successful activation?