[SOLVED] Problem displaying members edit profile page

[AdRock]

I have an edit profile page for my memebership system which works fine until i call a function to make sure that the user is logged in before displaying the content with their details.

 

When I log in and go onto the edit profile page, all the form fields are there but as soon as I click submit the page goes blank.  I don't have this problem if I don't use the function but how else am i supposed to only display the page to registered and logged in users?

 

Here is the function to check whether a user is logged in

function is_authed_user()
{
     // Check if the encrypted username is the same
     // as the unencrypted one, if it is, it hasn't been changed
     if (isset($_SESSION['username']) && (md5($_SESSION['username']) == $_SESSION['encrypted_name']))
     {
          return true;
     }
     else
     {
          return false;
     }
}[code]

and here is the edit profile page.
<?php
    if (!is_authed_user()) 
    {
print ('You are not permitted to view this page, <a href="index.php">click here</a> to go back.');
    }
    else
    {
echo"<h2>Edit Profile</h2><hr />";

$submit = $_POST['submit'];

function show_form() { 
    global $_POST, $print_again, $error;
    global $first_name, $last_name, $interests, $username, $newsletter; 

    ?> 
    <form method="post" id="login" action="<?php echo $_SERVER['REQUEST_URI']; ?>">
    	    	<fieldset>
    		    <legend>Username</legend>
	    <p class="hint">Please enter a username for your user account. Note that username should be between 4 and 30 characters.</p>
    		    <p><label for="username">Username:</label>
    		    <input type="text" <?php error_bool($error, "username"); ?> title="Please enter a username" id="username" name="username" size="30" value="<?php echo $username; ?>" /></p>
    	    	</fieldset>
    	    	<fieldset>
	    <legend>About You</legend>
    		    <p><label for="first_name">Forename:</label>
    		    <input type="text" <?php error_bool($error, "first_name"); ?> title="Please enter your first name" id="first_name" name="first_name" size="30" value="<?php echo $first_name; ?>" /></p>

    		    <p><label for="last_name">Surname:</label>
    		    <input type="text" <?php error_bool($error, "last_name"); ?> title="Please enter your last name" id="last_name" name="last_name" size="30" value="<?php echo $last_name; ?>" /></p>

	    <p class="hint">Please enter any interests/hobbies you have (optional).</p>
    		    <p><label for="interests">Your Interests:</label>
    		    <input type="text" title="Please enter any interests/hobbies you have" id="interests" name="interests" size="30" value="<?php echo $interests; ?>" /></p>
    	    	</fieldset>
    	    	<fieldset>
    		    <legend>Newsletter</legend>
	    <p class="hint">Sign up for jackgodfrey.org.uk newsletter. This newsletter includes what forthcoming events we are arranging, the latest Honeylands news and our latest news. You can Opt-out at any time....so sign up and give it a try!!</p>
    		    <p><label for="newsletter">Newsletter:</label>
    		    <input style="border:none" type="radio" value="yes" id="newsletter" checked="checked" name="newsletter" />Opt-in <input style="border:none" type="radio" value="no" name="newsletter" />Opt-out</p>
    	    	</fieldset>
    		    <p><label for="Submit" style="width: 20px"> </label>
    		    <input type="submit" name="submit" value="Edit Profile" class="sendbutton" />
    		    <input type="reset" value="Reset Fields" class="sendbutton" /></p>
    </form>
    <? 
} 
if(isset($submit)) { 
    check_form(); 
}
else 
{ 
    show_form(); 
} 

function check_form() { 
    global $_POST, $error, $print_again;
    global $first_name, $last_name, $username, $newsletter; 

    $first_name = check_input($_POST['first_name']);
    $last_name = check_input($_POST['last_name']);
    $interests = check_input($_POST['interests']);
    $username = check_input($_POST['username']);
    $newsletter = $_POST['newsletter'];

    $error['first_name'] = false;

    if(empty($first_name)) { 
        $error['first_name'] = true; 
         $print_again = true; 
        $message="<li>The <span><b>Forename</b></span> field is empty</li>"; 
    }
    else if(!ereg("^[A-Za-z]{2,30}$",$first_name)) {
	$error['first_name'] = true; 
         $print_again = true; 
        $message="<li><span><b>Forename</b></span> must contain letters only</li>";
    }

    if(empty($last_name)) { 
        $error['last_name'] = true; 
         $print_again = true; 
        $message.="<li>The <span><b>Surname</b></span> field is empty</li>"; 
    }
    else if(!ereg("^[A-Za-z\-]{2,30}$",$last_name)) {
	$error['last_name'] = true; 
         $print_again = true; 
        $message.="<li><span><b>Surname</b></span> must contain letters only</li>";
    }

    if(empty($username)) { 
        $error['username'] = true; 
         $print_again = true; 
        $message.="<li>The <span><b>Username</b></span> field is empty</li>"; 
    }
    else if( mysql_num_rows(mysql_query("SELECT username FROM users WHERE username = '$username'")) ) {
        $error['username'] = true; 
         $print_again = true; 
        $message.="<li>The username you have selected has already been used by another member in our database. Please choose a different Username!</li>";
	}
    else if(!ereg("^[A-Za-z0-9 \-]{4,30}$",$username)) {
	$error['username'] = true; 
         $print_again = true; 
        $message.="<li><span><b>Username</b></span> must contain letters and numbers only</li>";
    }  

    if($print_again)
    {
   	echo "<h2 class=\"errorhead\">There has been an error:</h2><p>You forgot to enter the following field(s)</p>
   	    <ul id=\"validation\">$message</ul>";
   	show_form(); 
    }
    else
    {

	// Stop the form being used from an external URL
    	// Get the referring URL
    	$referer = $_SERVER['HTTP_REFERER'];
    	// Get the URL of this page
    	$this_url = "http://".$_SERVER['HTTP_HOST'].$_SERVER["REQUEST_URI"];
    	// If the referring URL and the URL of this page don't match then
    	// display a message and don't send the email.
    	if ($referer != $this_url)
 	{
            echo "You do not have permission to use this script from another URL.<br />";
	    echo "If you are behind a firewall please check your referrer settings.";
            exit;
        }
	echo "done";
    } 
} 
      }
?>

[/code]

[TheFilmGod]

HA HA HA HA HA HA!!! ;D ;D

 

sucks to be you!!!

 

You php code crashed. When you get a blank page it means it crashed. Check your log files on your server. If you have a shared hosting server like I do don't expect any log files. :-\

 

HA HA HA HA!  ;D ;D(I'm only laughing cause this happended to me like a week ago and I got super pissed and started ripping my hair out).

 

;D HA HA HA HA ;D

[AdRock]

How did you fix it then?

 

I checked my logs and this is the error

 

PHP Fatal error:  Call to undefined function check_form() in d:\\Apache\\htdocs\\jack\\edit_profile.php on line 49