$_POST HELP - Working on Login Script

Nielubie

Hello, I"m a total noob to PHP so please be nice. 😃

I'm working on a simple login script and I read the whole PHP book on hudzilla.org. But the $_POST is not explained in the best terms for me to understand. I did a search on this site but it seems many of the login and passing variables exampes are over my head. I'm looking for a basic pratice thing.

Here is the code I have so far. I'm just trying to enter info from a form "username" and "password", and send it to some other PHP page via $_POST and display it using echo (print maybe?). But I get no output from my code, just blank.

I read something about registered globals and superglobals, is this what the problem lies? Because this feature is turned off in PHP 5? If so, can you show me an example how I can get this to work? Keep in mind that I'm very new to PHP. Short samples with great comments work best for me. 😃


#Login.php

<FORM ACTION="someform.php" METHOD="POST">
UserName: <INPUT TYPE="TEXT" NAME="username" /><BR />
Password: <INPUT TYPE="PASSWORD" NAME="password" /><BR />
<INPUT TYPE="submit" />
</FORM>

#Someform.php

<?php
//if(!empty($_GET)) extract($_GET);
if(!empty($_POST)) extract($_POST);
?>

<? php
	// Get info from POST
	$user = $_POST['username'];
	$pass = $_POST['password'];

echo $user;
echo $pass;

?>

😃 😃 😃

bpat1434

Well, here's an easy script (it's all in one):

<?php
// Check to see if the form was submitted
if( !isset($_POST['submit']) || empty($_POST['submit']) || $_POST['submit'] != "Submit" )
{
    // The form was not submitted.  So we'll display
    // a form for them!!
?>
<form name="blah" action="<?php echo $_SERVER['PHP_SELF']; ?>" method="post">
  Username: <input type="text" name="username"><br>
  Password: <input type="password" name="password"><br>
  <input type="submit" name="submit" value="Submit">
</form>
<?php
} // Closes the if() statement from above
else
{
    // The form was submitted, so let's display
    // what they submitted!
?>
   Thank you for logging in <?php echo $_POST['username']; ?>.  You provided the correct password: <?php echo $_POST['password']; ?>.<br><br>
   Redirecting now...
<?php
} // Closes else statement
?>

That's about as basic as it gets. I'll be able to put up an example later, after I put cough windows 🙁 cough onto my computer. Linux just ain't there yet.... :bemused:

~Brett

Nielubie

Thank you for the example it works great. I'm still experimenting on how PHP works so please bare with me.

I also purchased a book "PHP 5 and MySQL", hopefully this will be a great book for me to reference from. So far it's good, but two separate books have similar code to what's posted below and it dosen't seem to work.

I see the login screen both other HTML & PHP extensions, I press submit and it loads blank for me. The title dosen't appear, the text dosen't appear, no error messages, nothing. What could I be doing wrong?

-=-=-

<HTML>
<HEAD><TITLE>LOGIN</TITLE></HEAD>
<BODY>
<FORM METHOD="post" ACTION="someform.php">
UserName: <INPUT TYPE="TEXT" NAME="username" /><BR />
<INPUT TYPE="submit" NAME="submit" />
</FORM> 
</BODY>
</HTML>

someform.php

<?php
$username = $_POST['username'];
?>
<HTML>
<HEAD><TITLE>testing</TITLE></HEAD>
<BODY>
Some TESTY DATA: <B><? php echo $username; ?></B>
</BODY>
</HTML>

bpat1434

Hmm.... try adding at the top:
(before the $username = $_POST line):

error_reporting(E_ALL);

That should give you some output, if not, let me know.

~Brett

Nigma_D

Nielubie wrote:
echo $user;
echo $pass;

im pretty much a noobie aswell but doesnt echo need "" ?

bpat1434

No, echo does not need quotes. Quotes go around strings (parsed and unparsed). You can echo almost anything; however, if you don't echo a string, typically the type of item that's echoed is put on the screen. For example:

echo array('Harry', 'met', 'Sally'); // Prints: Array

$me = 'bpat1434';
echo $me; // Prints: bpat1434
echo "$me"; // Prints: bpat1434
echo '$me'; // Prints $me

function a(){
    return 1;
}

echo a(); // Prints: 1

function b() {
    return 'I have a lovely bunch of coconuts';
}

echo b(); // Prints: I have a lovely bunch of coconuts

function c() {
    return 'Schwarzwald';
}
$func = 'c';

echo $func(); // Prints: Schwarzwald

With those select examples, you can echo almost anything. The first shows what I mean by printing the type of element that you echo. If you try to echo an array, it will just print "Array"; however, if you use [man]print_r/man or you serialize it, you can then echo it out 😉