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October 29th, 2002, 03:37 AM

vlad_k

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PHP newbie in trouble

Hello!

I am a PHP newbie, but C/C++ guru

and I am having some
trouble with a first piece of PHP code I've ever written.

Namely, the script starts with some HTML tags, and then switches
to PHP routines that check variables passed to script via
$_GET...

However, the script doesn't work. Actually, nothing gets printed
in the browser, not even the beginning HTML tags (title, and some
<centered> text)...

I don't know where to begin. I've included a custom error handler functions (copied from PHP manual), but still nothing gets printed.

I am also using MySQL functions.

The PHP parser is 4.2, running on FreeBSD platform. Other,
simpler PHP scripts run smoothly (simple echoing etc...)

The code is short (a test to MySQL/PHP login system)... perhaps
someone would be nice enough to view it?

Thanks in advance!

October 29th, 2002, 05:27 AM

wAr-AnGeL

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post the code here or upload a copy of it with the file extension .phps (which allows us to see the code color coded for easy viewing). we'll be glad to help

__________________

"Only Linux users see the end of crashes."
- Pl4t0

October 29th, 2002, 05:04 PM

Ben Rowe

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yeah, could we see your code, so we can try and figure out whats gone wrong?

October 29th, 2002, 11:52 PM

vlad_k

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The code in question...

Hello fellahs!

Here is the code: Feel free to gloat over newbie mistakes and
make fun of me...

(by the way, couldn't upload a phps file)

Sorry, but message editor seems to have cut off the tabs!

PHP Code:


		
			
<html>

<head>

  <title>Page title</title>

</head>

<body>



<center>

<h2>Page title</h2><P>

</center>



<?php



    // redefine the user error constants - PHP 4 only

    define ("FATAL",E_USER_ERROR);

    define ("ERROR",E_USER_WARNING);

    define ("WARNING",E_USER_NOTICE);



    // set the error reporting level for this script

    error_reporting (FATAL | ERROR | WARNING);



    $old_error_handler = set_error_handler("myErrorHandler");



    # -----------------------------------------------------------------





    $db= mysql_connect ("server", "user", "password") or die("Could not reach database.");

    mysql_select_db("dbase") or die("Could not select database.");



    $action= $_GET["action"];

    $usrid= $_SESSION["id"];

    $pass= $_SESSION["valid"];



    if (!$action || !$usrid || !$pass) {

       if ($action=="login") page_login();

       else page_intro();

    } else {

       $result= mysql_query("SELECT count(id) FROM sometable WHERE id='$userid' AND pswd='$pass'") or die("Could not query database.");

       $num= mysql_result($result, 0);

       if (!$num) {

             echo "<font color=\"#FF0000\"><P>Invalid authentication!</font><P>";

             page_intro();

       } else {

             switch($action) {

                 case "login": page_login(); break;

            case "logout": echo "Some logout text.<P>"; page_intro(); break;

            case "menu": page_menu(); break;

            case "intro":

            default: page_intro();     

             }

       }        

    }



    mysql_close($db);

?>

</body>

</html>



<?php

# ----------------------------------------------------------------------------

#  Error handling function as in PHP manual

# ----------------------------------------------------------------------------

function myErrorHandler ($errno, $errstr, $errfile, $errline) {

  switch ($errno) {

  case FATAL:

    echo "<b>FATAL</b> [$errno] $errstr<br>\n";

    echo "  Fatal error in line ".$errline." of file ".$errfile;

    echo ", PHP ".PHP_VERSION." (".PHP_OS.")<br>\n";

    echo "Aborting...<br>\n";

    exit(1);

    break;

  case ERROR:

    echo "<b>ERROR</b> [$errno] $errstr<br>\n";

    break;

  case WARNING:

    echo "<b>WARNING</b> [$errno] $errstr<br>\n";

    break;

    default:

    echo "Unkown error type: [$errno] $errstr<br>\n";

    break;

  }

}





# ----------------------------------------------------------------------------



function page_none() {



}

# ----------------------------------------------------------------------------



function page_menu() {

    echo "Some text in protected area. <a href="testadmin.php?action=logout">Logout</a>";

}

# ----------------------------------------------------------------------------



function page_login() {

    session_unset();



    $usrn= addslashes($_POST["usr"]);

    $pswd= md5($_POST["pwd"]);



    $result= mysql_query("SELECT count(id) FROM sometable WHERE pswd='$pswd' AND username=$usrn") or die("Could not query database.");

    $num= mysql_result($result, 0);

    

    if (!$num) {

       echo "<font color=\"#FF0000\"><P>Invalid username/password combination.</font><P>";

       page_intro();

    } else {

       $result= mysql_query("SELECT * FROM sometable WHERE pswd='$pswd' AND username=$usrn");    

       $row= mysql_fetch_object($result);

       $id= $row->id;

       $name= $row->name;

       echo "<P>Welcome $name<P>.";



       session_start();   

       $_SESSION["id"]= $id;

       $_SESSION["valid"]= $pswd;

       

       page_menu();            

    }    

}

# ----------------------------------------------------------------------------



function page_intro() {

    session_unset();

?>



<center>

<BR>

Some notification text.

<P>

<form method="POST" action="admin/testadmin.php?action=login">

Username:<BR>

<input type="text" name="usr" value="" size="20" maxlength="20"><P>

Password:<BR>

<input type="password" name="pwd" value="" size="20" maxlength="20"><P>

<input type="submit" value="Login">

</form>

</center>



<?php

}



?>

Last edited by vlad_k : October 30th, 2002 at 12:07 AM.

November 4th, 2002, 12:27 AM

vlad_k

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PHP newbie still in trouble!

Hello!

You've forgotten about me.

November 4th, 2002, 12:39 AM

Ben Rowe

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so what doesnt it do? what error messages do you get?

November 4th, 2002, 01:13 AM

vlad_k

Junior Member

Join Date: Oct 2002

Location: Croatia

Posts: 13

Time spent in forums: < 1 sec
Reputation Power: 0

Embarrased

Uhm, I am sooooo embarrased!

I forgot to escape the slashes in an echo call....

Please forgive me wasting your time...

Is there a Win32 PHP interpreter so I could test my scripts
thoroughly before posting them online?

Last edited by vlad_k : November 4th, 2002 at 01:21 AM.

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