<?php
$db=mysqli_connect("localhost","root","","ura");
if(isset($_GET["IDS"]))
{
    $IDS=$_GET["IDS"];
    $query=mysqli_query($db,"SELECT*FROM studenti WHERE IDS=$IDS");
    $rezultatstudent=mysql_fetch_assoc($query);
?>

Nume:<input type="text" name="nume" value="<?php echo $rezultatstudent["nume"];?>"><br>
Sex:
<?php
    if(rezultatstudent["sex"]=='M')
        echo '<input type="radio" name="sex" checked value="'.<?php echo $rezultatstudent["Sex"].'">M';
    else
        echo '<input type="radio" name="sex" checked value="'.<?php echo $rezultatstudent["Sex"].'">F';?>
    ?>
    <br>
    An:<input type ="text" maxlength="1" size="1" name="an" value="<?php echo $rezultatstudent["an"];?>"><br>
    Varsta:<input type="text" maxlenght="2" size="2" name="varsta" value="<?php echo $rezultatstudent["varsta"];?>"><br>
    User:<input type="text" maxlenght="2" size="2" name="user" value="<?php echo $rezultatstudent["user"];?>"><br>
    Pass:<input type="text" maxlenght="2" size="2" name="pass" value="<?php echo $rezultatstudent["pass"];?>"><br>
<?php
}
?>