before submiting

[devil_online]

hi, I have this code:

if((!$username) || (!$password)){
    echo "Please enter ALL of the information! <br />";
    include 'login_form.html';
    exit();
}

However without subminting it already show Please enter ALL of the information! on the page..how can I correct this? thanks

[LordShryku]

Is it submitting to itself? Use a hidden input, and check for that.

[devil_online]

no..it showed in the page before I submit, when load the page (before I submit a blank field)

thanks

[LordShryku]

<?php
if(isset($_POST['submitted']) && $_POST['submitted'] == "yes") {
   // check for valid username and password
}
else {
   //show form
?>
<form action="<?php echo $_SERVER['PHP_SELF']; ?>">
<input type="hidden" name="submitted" value="yes" />
UserName: <input type="text" name="username" />
<br />
Password: <input type="password" name="password">
<br />
<input type="submit" />
</form>
<?php
}
?>