issue with echo div in PHP - php

Question

I am doing the login page If the user not successfully login I will use the the below to handle it, which means the message will be showed on the left of text box pwd. But the message never showed when the login failed. Can you tell me why
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
<label>Username:</label>
<input type="text" name="name" size="10"> </br>
<label>Password:</label>
<input type="text" name="pwd" size="10"> </br>
<?php
echo '<div style="position:absolute; left:650px; top:25px;float:left">';
if (isset($username))
{
// if they've tried and failed to log in
echo 'Your password is not right<br />';
}
echo '</div>';
?>
Register &nbsp
<input type=submit name=login value=Login>
</form>
If I dont put PHP code, the message will be showed blow the pwd textbox.But I want is to the left of text box. I am sure the problem is CSS style, because when I just define DIV only has one properties, which is float left the error will be showed blow pwd text box, login and register will be to the right of this error message, which is very strange

Answer 1

If you are not using AJAX, and you are not familiar with it.
Try this!
<form action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
<label>Username:</label>
<input type="text" name="name" size="10"> </br>
<?php
if ($_SERVER['REQUEST_METHOD'] == 'POST') {
if(!empty($_POST['name']) && !empty($_POST['pwd'])){
$name = trim($_POST['name']);
$password = trim($_POST['pwd']); # Normally this password is encrypted
# Database Connection Here
if // if they've tried and failed to log in
{
echo '<div style="position:absolute; left:650px; top:25px;float:right">Your password is not right<div/>';
}
}
}
?>
<label>Password:</label>
<input type="text" name="pwd" size="10"> </br>
Register &nbsp
<input type="submit" name="login" value="Login">
The better solution or practice would be to use AJAX. With AJAX you can display your error message anywhere you want. If you want to practice go to the website link below:-
http://www.developphp.com/view.php?tid=1296