php - Undefined variable on POST -

i looked trough pages , fixed undefined index on username , password undefined variable. had more code decided simplify sake of testing , echo see if changes , doesn't.

<?php if (isset($_post['submit'])){ $uname = isset($_post['username']);              $pass = isset($_post['password']);  }  echo $uname; echo $password; ?> 

i this:

notice: undefined variable: uname in c:\xampp\htdocs\8\login.php on line 7

notice: undefined variable: pass in c:\xampp\htdocs\8\login.php on line 8

i not understand what's wrong here. if needed here form page html.

<form id="login" method="post" action="login.php"> <div id="loginon"> <label for="username" style="color:#0f0; font-family:arial, helvetica, sans-serif;" >username: &nbsp; &nbsp;</label> <input type="text" id="username" name="username" /> <br  /> <br  />  <label for="password"  style="color:#0f0; size:auto; font-family:arial, helvetica, sans-serif;">password: &nbsp; &nbsp;</label> <input type="password" id="password" name="password" />  <br /> <br /> <input type="image" src="http://www.clker.com/cliparts/2/g/4/v/k/e/submit-hi.png" border="0" width="180px" height="80px" alt="submit" /> </div> </form> </body> 

edit: further problem connected think allowed post here.

if($username == "pikachu" || "cloud") {     $ucheck = "dobar"; } else {     $ucheck = "los"; }  if ($password == "123123" || "132132") {     $pcheck = "topar"; } else {     $pcheck = "losh"; }  if($ucheck == "dobar" && $pcheck == "topar") {     echo "najjaci si!";  }  elseif ($ucheck == "dobar" && $pcheck == "losh") {     echo "wimp."; } elseif ($ucheck == "los" && $pcheck == "topar") {     echo "fish."; } 

the problem echoes out "najjaci si" no matter type in previous form. ideas?

since have variable decleration inside logic (if), there chance variables not set @ all. try this

<?php if (isset($_post['submit'])){   $uname = isset($_post['username']);                $pass = isset($_post['password']);     echo $uname;   echo $pass; } else {   echo "no submit detected!"; }   ?> 

it doesen't if have actual element named submit. try adding this:

<input type="submit" name="submit" value="send form" /> 

now, form contains element named "submit" send post parameter when form submitted.

i myself, in need of framework, doing this:

$username = ( isset($_post["username"]) && $_post["username"] != "" ? $_post["username"] : false ); $password = ( isset($_post["password"]) && $_post["password"] != "" ? $_post["password"] : false );  if( !$username === false && !$password === false ) {     echo $username . " <br /> " . $password; } else {     echo "no! :) "; }