PHP Login Access Related issues

PHP Login Access Issues
Make a simple page entry


Login yes, but I think a user can manage only one village data now log in to the address bar? id= I can just change it. Login ...
For example, a person logged in with 1 account can only manage 1 of the data but in the address bar to change 1 to 2 he can manage 2 of the data how to limit • My rookie says it hurts to kneel and beg big hands online

Login interface $conn =mysql_connect ("localhost", "xypi20", "a16812343");
mysql_select_db ("JS");
mysql_query ("Set names ' gb2312 '");

if (Isset ($_post["user")) {
$user =$_post["User"];
$password =$_post["Password"];
$sql = "SELECT * from login where user= ' {$user} ' and password= ' {$password} '";
$query =mysql_query ($sql);
$array =mysql_fetch_array ($query);



if ($user = = $array {' user '} and $password = = $array {' Password '}} {

$kind = $array {' Kind '};

Session_Start ();


$_session[' keyword ']= "$kind";

echo ""; }

Else
echo "";
}



?>

Management interface
$conn =mysql_connect ("localhost", "xypi20", "a16812343");
mysql_select_db ("JS");
mysql_query ("Set names ' gb2312 '");
$kind = $_get[' id '];
/*session_start ();
if (!isset ($_session[' keyword '))


echo ""; */
Echo $kind;
Session_Start ();

if (isset ($_session[' keyword '))! = $kind)

echo "";


?>

if (Isset ($_post["name"],$_post["Time"])) {

$name =$_post["name"];
$time =$_post["Time"];
Echo $name;
Echo $time;
Echo $kind;
$sql = "SELECT * from data where kind= ' $kind '";
if ($name)//name is not empty
{
$sql. = "and name = ' $name '";
if ($time)
$sql. = "and input time = ' $time '";

}
ElseIf ($time)
{
$sql. = "and input time = ' $time '";

}


The problem is in this query I am directly where kind= ' $kind ' so no matter what account login in the kind to modify the Address bar can query other data ...

------Solution--------------------
$fuck

