Access form elements' properties in PHP

[first_blood]

I am new to PHP so I need a lot of help with this.

 

I have a form with 2 text boxes (loginid/password) On submitting the form (action = same PHP page) I check (if(isset($_POST("submit"))) and validate the fields from the records in a database. If its wrong, i need to display a error message, if not I direct the user to another page. This is my scenario.

 

I have a problem displaying the error message. I have 2 <div> tags right next to the 2 text boxes showing the error message but its invisible on form load (style.display = 'none') Upon validation i need to make this div tags visible using (style.display = 'block'). How do i do that in PHP?

 

Here is part of my code..

 

 

<?

if(isset($_POST["submit"]))

{

require_once("config.php");

$userid = $_POST['userid'];

$password = $_POST['password'];

 

 

$query = "select * from login where userid = '$userid'";

 

$result = pg_query($connection, $query) or die("Error in query: $query." . pg_last_error($connection));

$rows = pg_num_rows($result);

if($rows != 1)

{

echo "<div name=\"div1\" id=\"div1\" style=\"display:block\">Invalid Username!!!</div>";

}

else

{

 

$row = pg_fetch_row($result);

 

if($password == $row[1])

{

$type = $row[2];

$company = $row[4];

echo "correct username and password";

}

else

{

echo "Invalid";

}

pg_free_result($result);

}

}

?>

 

 

Instead of echoing the error message to the browser, i need to make the div tag style.display = 'block'/'none' according to conditions.... Is there a way to access the div tag's properties in PHP????

 

In javascript I would write something like this document.getElementById('div1').style.display = 'none'; Is there a corresponding code in PHP for this?

 

[DarkWater]

Just do it in Javascript.  PHP is server-side, not client-side.  You'd need to make decisions in the code for which one to echo based on certain variables, rather than just changing a property in Javascript.  It would be easier to code client-side.

[first_blood]

but i need to access the database so i need server-side scripting... I need JS only for that div style changing...

 

if($rows != 1)

{

?>

<script>

document.getElementById('div1').style.display = 'block';

</script>

<?

....rest of th PH code

 

Thats not working