Untitled

I am trying to edit form values in php. Here is my html code of the form.

<?php
 $connect = mysqli_connect("localhost", "root", "", "epanel");
 $id=$_POST['search'];


 $sql = "SELECT * FROM university WHERE uno= '$id'";
 $results1=mysqli_query($connect,$sql);
 while($ro=mysqli_fetch_array($results1))
{
    $id=$ro[0];
    $name=$ro[1];
    $phone=$ro[2];
    $email=$ro[3];
    $address=$ro[4];
    $state=$ro[5];
    $pincode=$ro[6];
}
?>

 <html>

<body>
<h1 style="color:black;"><u>Change University Details</u></h1></br>
  <form method="post" id="registration_form" action="uedit/enft">
 <table >
</br>

<tr>

<td><input type="hidden" id="uid" name="uid" value="<?php echo "$id" ?>" size="30"/> <span id="j" /></span></td>
</tr>

<tr>
<td><label for="uname"> Name</label></td>
<td><input type="text" id="name" name="uname" value="<?php echo "$name" ?>" size="30"/> <span id="n" /></span></td>
</tr>


<tr>
<td><label  for="uphone">Phone_no</label></td>
<td><input type="text" name="uphone" id="phn" value="<?php echo "$phone" ?>" size="30" width="20%"><span id="p" /></span></td>

</tr>

 <tr >
<td><label for="uemail">Email_Id</td>
<td><input type="text" name="uemail" id="emailid" value="<?php echo "$email" ?>" size="30"><span id="e" /></span></td>
  </label>
</tr>


<tr>
<td><label for="uaddress">Address</td>
<td><input type="textarea" name="uaddress" id="add" value="<?php echo "$address" ?>" rows="10" cols="10"></textarea><span id="a"/></span></td>
</tr>

<tr>
<td><label for="ustate">State</td>
<td><select name="ustate" required>
<?php
$servername = "localhost";
$username = "root";
$password = "";
$dbname = "epanel";
$conn = mysqli_connect($servername, $username, $password, $dbname);
$query="SELECT stname from state";
$res=mysqli_query($conn,$query);
foreach($res as $r)
{
    ?>
    <option value="<?php echo $r['stname']; ?>"><?php echo $r['stname'];?></option>

<?php
}
?>

</select>

<span id="s" /></span></td>
</tr>


<tr>
<td><label for="upincode">Pin_Code</td>
<td><input type="text" name="upincode" id="pin" value="<?php echo "$pincode" ?>" size="30"><span id="k" /></span></td>
</tr>
<tr>


<tr>
<td><input type="submit" name="submit" value="UPDATE"></td>
</tr>
</table>
</form>
</body>
</html>

Here is the js code. Validations are not working properly, the form is being submitted even after some form values are not correct.

<script>


     $("#n").hide();
     $("#p").hide();
     $("#e").hide();
     $("#a").hide();
     $("#k").hide();


     var name;
     var ph;
     var em;
     var a ;
     var pc;

    $("#name").focusout(function() {

        check_username();


    });

    $("#phn").focusout(function() {

        check_phone();

    });

    $("#emailid").focusout(function() {

        check_email();


    });

    $("#add").focusout(function() {

        check_add();

    });

    $("#pin").focusout(function() {

        check_pin();

    });


    function check_username() {

        var na= $("#name").val();
        var pat = new RegExp(/^[a-zA-Z ]+$/);

        if(pat.test(na)) {
            $("#n").hide();
            name=false;


        } else {

            $("#n").html("Invalid name");
            $("#n").show();
            name = true;

        }

        return name;


    }

    function check_phone() {

        var pho= $("#phn").val();
        var pat = new RegExp(/^[0-9]{8,11}$/);

        if(pat.test(pho)) {
            $("#p").hide();
            ph = false;


        } else {

            $("#p").html("Invalid Phone");
            $("#p").show();
            ph = true;

        }
        return ph;

    }

     function check_email() {

        var pattern = new RegExp(/^[+a-zA-Z0-9._-]+@[a-zA-Z0-9.-]+.[a-zA-Z]{2,4}$/i);

        if(pattern.test($("#emailid").val())) {
            $("#e").hide();
            em = false;

        } else {
            $("#e").html("Invalid email address");
            $("#e").show();
            em = true;

        }
        return em;

    }

    function check_add() {

            var au = $("#add").val();
    var pat = new RegExp(/^[0-9a-zA-Z,/ -]+$/);

        if(pat.test(au)) {
            $("#a").hide();
            a = false;
            return a;

        } else {
            $("#a").html("Invalid address");
            $("#a").show();
            a = true;

        }
         return a;

    }

    function check_pin() {

        var pho= $("#pin").val();
        var pat = new RegExp(/^[1-9][0-9]{5}$/);

        if(pat.test(pho)) {
            $("#k").hide();
            pc = false;

        } else {

            $("#k").html("Invalid Pincode");
            $("#k").show();
            pc = true;

        }
    return pc;
    }

    $("#registration_form").submit(function() {


        var ne=check_username();


        var pe=check_phone();

        var eme=check_email();

        var ad=check_add();


        var che=check_pin();


        if (ne === 'false' && pe==='false' && eme==='false' && ad==='false' && che==='false')
           {

             return true;
            }

        else

        {

            return false;

        }


    });


</script>