Login Form, form action="self"??? How to submit data to self.

DeanWhitehouse · April 21, 2008

Is it possible to have a login(input) form and the login(proccessor) in the same file??

And if so, can i been shown an example and how to post the form to self

DarkWater · April 21, 2008

<?php

if (isset($_POST['submitted'])) {

//...process form here

}

?>

<form action="<?php echo $_SERVER['PHP_SELF']?>" method="post">

</form>

Like that.

redarrow · April 21, 2008

Try this m8..........

<?php
if(isset($_POST['submit'])){

$message=$_POST['message'];

echo $message;
}

?>


<form  method="POST" action="<?php $_SERVER['PHP_SELF']; ?>">
<br><br>
Your meassage please!
<br>
<input type="text" name="message">
<br><br>
<input type="submit" name="submit" value="send">
</form>

DarkWater · April 21, 2008

Same thing as what I said, basically. Should work perfectly fine.

DeanWhitehouse · April 21, 2008

ok, thanks

i changed my code like this

<?php
require_once '../includes/main.inc.php';
require_once '../includes/db_connect.php';
require_once '../includes/config_table.inc.php';
session_start();



// Only include the header and footers if you have to print errors
function print_error($err_message)
{
require_once '../includes/header.php';
require_once '../includes/footer.php';
require_once '../nav_bar.php';
echo $err_message;
exit;
}
if(isset($_POST['admin_login'])){

$user_name = $_POST["user_name"];        
$user_password = $_POST["user_password"];    
$verify_username = strlen($user_name);
$verify_pass = strlen($user_password);
if ($verify_pass > 0 && $verify_username > 0)
{
$salt = substr($user_password, 0, 2);
$userPswd = crypt($user_password, $salt);
$sql = "SELECT * FROM `$user` WHERE user_name='$user_name' AND user_password='$userPswd' LIMIT 1;";
$result = mysql_query($sql);
if (mysql_num_rows($result) == 1){
	$row = mysql_fetch_assoc($result);
	$user_level = $row['userlevel'];
	if ($user_level == 1) {
		$login_check = @mysql_fetch_array(mysql_query("SELECT * from `$user` WHERE user_name = '$_GET[u]' AND user_password = 	'$_GET[p]'"));

		$userright = array($login_check['user_name'], $login_check['userlevel']);
		$s_userpass = serialize($userpass);

		setcookie( "$cookiename" , $s_userpass , time()+$custom_time , "" , "127.0.0.1" );
		header("Location:http://".$_SERVER[HTTP_HOST].$_SERVER[REQUEST_URI]);
		$_SESSION['is_valid'] = true; //change the session variable name to what you want, just remember it for all files
$_SESSION['username'] = $row['user_name'];
$_SESSION['user_level'] = $row['userlevel'];

	} 
	elseif ($user_level == 2){    
		$login_check = @mysql_fetch_array(mysql_query("SELECT * from `$user` WHERE user_name = '$_GET[u]' AND user_password = '$_GET[p]'"));

		$userright = array($login_check['user_name'], $login_check['userlevel']);
		$s_userpass = serialize($userpass);

		setcookie( "$cookiename" , $s_userpass , time()+$custom_time , "" , "127.0.0.1" );
		echo "<meta http-equiv='refresh' content='0; url=../index.php'>";
		$_SESSION['is_valid'] = true; //change the session variable name to what you want, just remember it for all files
$_SESSION['username'] = $row['user_name'];
$_SESSION['user_level'] = $row['userlevel'];
	}
}
else{
	print_error( 'Login failed. Username and Password did not match database entries.');    
}
}

else
{
print_error( "Form was not completed. Please go back and make sure that the form was fully completed.");    
}


mysql_close();
?> 
<html>
<table bgcolor='#999999' align='right'><form action="<?php $_SERVER['PHP_SELF']; ?>" method='POST'>
<tr><td>Username: </td><td><input type='text' name='user_name' /><br /></td></tr>
<tr><td>Password:</td><td> <input type='password' name='user_password' /><br /></td></tr>
<tr><td><input type='submit' value='Continue' name='admin_login' /></td></tr>
</form></table>
</html>

but i get an error saying Parse error: syntax error, unexpected $end in /home/www/deanwhitehouse.awardspace.co.uk/admin/admin_login.php on line 78

this is the bottom line.

DarkWater · April 21, 2008

The $end issue means you missed a curly brace on a loop or something. And don't do this:

<input type="submit" name="admin_login">

Do this:

<input type="hidden" name="admin_login" value="true"><input type="submit" value="Submit!">

Otherwise, it won't work properly.

redarrow · April 21, 2008

missing brace....

<?php
require_once '../includes/main.inc.php';
require_once '../includes/db_connect.php';
require_once '../includes/config_table.inc.php';
session_start();



// Only include the header and footers if you have to print errors
function print_error($err_message)
{
require_once '../includes/header.php';
require_once '../includes/footer.php';
require_once '../nav_bar.php';
echo $err_message;
exit;
}
if(isset($_POST['admin_login'])){

$user_name = $_POST["user_name"];        
$user_password = $_POST["user_password"];    
$verify_username = strlen($user_name);
$verify_pass = strlen($user_password);
if ($verify_pass > 0 && $verify_username > 0)
{
$salt = substr($user_password, 0, 2);
$userPswd = crypt($user_password, $salt);
$sql = "SELECT * FROM `$user` WHERE user_name='$user_name' AND user_password='$userPswd' LIMIT 1;";
$result = mysql_query($sql);
if (mysql_num_rows($result) == 1){
	$row = mysql_fetch_assoc($result);
	$user_level = $row['userlevel'];
	if ($user_level == 1) {
		$login_check = @mysql_fetch_array(mysql_query("SELECT * from `$user` WHERE user_name = '$_GET[u]' AND user_password = 	'$_GET[p]'"));

		$userright = array($login_check['user_name'], $login_check['userlevel']);
		$s_userpass = serialize($userpass);

		setcookie( "$cookiename" , $s_userpass , time()+$custom_time , "" , "127.0.0.1" );
		header("Location:http://".$_SERVER[HTTP_HOST].$_SERVER[REQUEST_URI]);
		$_SESSION['is_valid'] = true; //change the session variable name to what you want, just remember it for all files
$_SESSION['username'] = $row['user_name'];
$_SESSION['user_level'] = $row['userlevel'];

	} 
	elseif ($user_level == 2){    
		$login_check = @mysql_fetch_array(mysql_query("SELECT * from `$user` WHERE user_name = '$_GET[u]' AND user_password = '$_GET[p]'"));

		$userright = array($login_check['user_name'], $login_check['userlevel']);
		$s_userpass = serialize($userpass);

		setcookie( "$cookiename" , $s_userpass , time()+$custom_time , "" , "127.0.0.1" );
		echo "<meta http-equiv='refresh' content='0; url=../index.php'>";
		$_SESSION['is_valid'] = true; //change the session variable name to what you want, just remember it for all files
$_SESSION['username'] = $row['user_name'];
$_SESSION['user_level'] = $row['userlevel'];
	}
}
else{
	print_error( 'Login failed. Username and Password did not match database entries.');    
}
}

else
{
print_error( "Form was not completed. Please go back and make sure that the form was fully completed.");    
}
} //<<<<<<<<< was missing.

mysql_close();
?> 
<html>
<table bgcolor='#999999' align='right'><form action="<?php $_SERVER['PHP_SELF']; ?>" method='POST'>
<tr><td>Username: </td><td><input type='text' name='user_name' /><br /></td></tr>
<tr><td>Password:</td><td> <input type='password' name='user_password' /><br /></td></tr>
<tr><td><input type='submit' value='Continue' name='admin_login' /></td></tr>
</form></table>
</html>

DeanWhitehouse · April 21, 2008

Ah,how did you find it so fast

DarkWater · April 21, 2008

Ah,how did you find it so fast

I believe the code tags on this forum highlight PHP syntax and he saw which one didn't match up. I was far too lazy to look. Sorry. I'm kind of in the middle of coding something myself, so I didn't actually look too hard for the brace that was missing.

monkeypaw201 · April 21, 2008

just a general question on this topic, i have heard that the scripts that the form posts to must be ABOVE the html, is this true?

DeanWhitehouse · April 21, 2008

no problem.

i now have another problem, (acutally the reason i tried this way was to overcome the problem).

i need the form to redirect after the user logged in depending on there userclass.

It is meant to redirect to the page they where on, but the header information is already been sent by another file, can anyone see a way to get around this?

header.php

<?php
session_start();
echo ("<title>$site_title</title>");
echo ("<link rel='stylesheet' type='text/css' href='../Themes/style.css' />");
echo ("<table class='title'><tr><td align='center'><h1>$custom_header</h1></td></tr></table>");
?>

this is where the header information is already sent from

this is where i need to redirect

if ($user_level == 1) {
		$login_check = @mysql_fetch_array(mysql_query("SELECT * from `$user` WHERE user_name = '$_GET[u]' AND user_password = 	'$_GET[p]'"));

		$userright = array($login_check['user_name'], $login_check['userlevel']);
		$s_userpass = serialize($userpass);

		setcookie( "$cookiename" , $s_userpass , time()+$custom_time , "" , "127.0.0.1" );
		header("Location:http://".$_SERVER[HTTP_HOST].$_SERVER[REQUEST_URI]);
		$_SESSION['is_valid'] = true; //change the session variable name to what you want, just remember it for all files
$_SESSION['username'] = $row['user_name'];
$_SESSION['user_level'] = $row['userlevel'];

	} 
	elseif ($user_level == 2){    
		$login_check = @mysql_fetch_array(mysql_query("SELECT * from `$user` WHERE user_name = '$_GET[u]' AND user_password = '$_GET[p]'"));

		$userright = array($login_check['user_name'], $login_check['userlevel']);
		$s_userpass = serialize($userpass);

		setcookie( "$cookiename" , $s_userpass , time()+$custom_time , "" , "127.0.0.1" );
		echo "<meta http-equiv='refresh' content='0; url=../index.php'>";
		$_SESSION['is_valid'] = true; //change the session variable name to what you want, just remember it for all files
$_SESSION['username'] = $row['user_name'];
$_SESSION['user_level'] = $row['userlevel'];
	}
}

GregL83 · April 21, 2008

you could echo javascript....

also I use <?php echo $_SERVER['PHP_SELF']; ?>, don't know if that matters

echo the javascript widow.location = "index.html" or your location requested....

DarkWater · April 21, 2008

Sure thing. At the top of your page, right below (or above) session_start();, put ob_start();. This starts output buffering. It stores ALL output so you can send headers whenever you want (before calling the ending function).

To clean the buffer and destroy it WITHOUT displaying its contents, use ob_end_clean();.

To display its contents and destroy the buffer, use ob_end_flush();. Put ob_end_flush(); at the end of any script with ob_start() on to make sure you empty the buffer (although PHP does it automatically, it's good practice to do it anyway). Any point with exit() or anything, put ob_end_flush(); before it to display the contents before killing the script. You'll figure it out after playing with it a bit.

Fadion · April 21, 2008

or alternatively u can use meta refresh if ure lazy on this.

DarkWater · April 21, 2008

or alternatively u can use meta refresh if ure lazy on this.

Output buffering is cool though.

redarrow · April 21, 2008

@ dark_water that a get out clouse to the problam lol..........

in realty you need to correct the problam not rely on ob_start() and ob_flush.............

if it broke fix it otherwise leave it alone.........

meta refresh better i say...........

monkeypaw201 · April 21, 2008

just a general question on this topic, i have heard that the scripts that the form posts to must be ABOVE the html, is this true?

Not to change the topic... but anyone know?

DeanWhitehouse · April 21, 2008

as shown in the code i tried meta refresh and header and both present with the same issue, also i can't set the cookies either.

the header file needs to be changed or the something else.

DarkWater · April 21, 2008

Not true, but it IS true if you don't want the HTML displayed every time.

@redarrow: It's not just a cheap fix for the problem. It stores the output so you can write the code in a fluid manner. I use ob_start() whenever I need to use headers AND write to the browser. Meta redirects are okay for redirects, but what about a cookie? ob_start() helps there too. It's a great function.

DeanWhitehouse · April 21, 2008

so do people think i should use ob_start();

or try and change the code and find a way to make it work

DarkWater · April 21, 2008

Use ob_start();. Look at the manual pages on it if you must, and figure it out. It'll help you SO much in the long run.

DeanWhitehouse · April 21, 2008

y do i need to use the flush and clean??

DarkWater · April 21, 2008

Use flush to display what's in the buffer at certain points if you want, and use clean before a redirect so PHP doesn't need to do it itself. Saves time and resources, basically.

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Login Form, form action="self"??? How to submit data to self.

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