User management with database : Authentication « HTML « PHP

User management with database

create table user_info (
user_id char(18),
fname char(15),
email char(35));

if (! isset($userid)) :
     $id = "15";
     setcookie ("userid", $id, time()+3600);
     print "A cookie is set. Please refresh the page";
     @mysql_connect("localhost", "root", "") or die("Could not connect to MySQL server!");
     @mysql_select_db("user") or die("Could not select user database!");
     $query = "SELECT * FROM user_info WHERE user_id = '$userid'";
     $result = mysql_query($query);
     $row = mysql_fetch_array($result);
     print "Hi ".$row["fname"].",<br>";
     print "Your email address is ".$row["email"];


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8.Hardcoding the username and password into a script
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