checking fields of log in form

[phpbeginner]

My question is simple.

When a user types in a blank username or password, I want to say sorry, you must enter a username and a password in a different colour.

Can someone suggest how to do this. I thought I woiuld be able to find something quick online, but either everything seems too complicated or I just cannot find what I want.

[kovik]

That's simple enough for me to give a straight answer to.

[code=php]<?php
if(!empty($_POS T)) // Form has been submitted
{
if(!isset($_POS T['username'], $_POST['password']))
{
$error = "You must fill in all fields.";
}
else
{
// Submit and process the data
}
}
?>

<form method="post" action="" >
<input type="text" name="username" value="<?php
echo isset($_POST['username']) ? $_POST['username'] : '';?> />
<input type="password" name="password" value="<?php
echo isset($_POST['password']) ? $_POST['password'] : '';?> />
<input type="submit" value="Submit" />
</form>[/code]

That should do it. Inform me if there are any typos.


You just have to check each form field (which you should ALWAYS do anyway).