Welcome.
This is my first time :).
Sorry for my english.
I got problem with file:bill.php on page 265.
There is a second version this file(first is on page261).There wrote something about delet prefix as homework.I don't know how i can do that.Can someone paste here listing this file?Please... :)
 my files:
menu1b.php**************************************** **
<?php
 $Entrees=array("Stek (9zl)", "Pizza (7zl)", "Makaron (6zl)");
  echo "<FORM MATHOD=POST ACTION='menu2b.php'>";
 echo "Co sobie zyczysz na obiad?";
 echo "<SELECT NAME='PERS_Entree'>";
 echo "<OPTION SELECTED VALUE=''>Wybierz...</OPTION>";
 echo "<OPTION>$Entrees[0]</OPTION>";
 echo "<OPTION>$Entrees[1]</OPTION>";
 echo "<OPTION>$Entrees[2]</OPTION>";
 echo "</SELECT><BR><BR>";
 if ($HTTP_POST_VARS)
 {
  while (list($lvar, $lvalue)=each($HTTP_POST_VARS))
  {
   if (ereg("^PERS_", $lvar, $throwaway))
   {
    echo "<INPUT TYPE=HIDDEN NAME='$lvar' VALUE='$lvalue'>\n";
   }
  }
 }
 echo "<INPUT TYPE=SUBMIT>";
 echo "</FORM>";
?>
menu2b.php**************************************** **********
<?php
 $Desserts=array("Jablecznik (3zl)","Nalesniki (3zl)","Lody (2zl)");
 echo "<FORM METHOD=POST ACTION='billb.php'>";
 echo "Co sobie zyczysz na deser?";
 echo "<SELECT NAME='PERS_Dessert'>";
 echo "<OPTION SELECTED VALUE=''>Wybierz...</OPTION>";
 echo "<OPTION>$Desserts[0]</OPTION>";
 echo "<OPTION>$Desserts[1]</OPTION>";
 echo "<OPTION>$Desserts[2]</OPTION>";
 echo "</SELECT><BR><BR>";
 if ($HTTP_POST_VARS)
 {
  while (list($lvar, $lvalue)=each($HTTP_POST_VARS))
  {
   if (ereg("^PERS_", $lvar, $throwaway))
   {
    echo "<INPUT TYPE=HIDDEN NAME='$lvar' VALUE='$lvalue'>\n";
   }
  }
 }
 echo "<INPUT TYPE=SUBMIT>";
 echo "</FORM>";
?>
billb.php***************************************
<?php
 $total=0;
 echo "Zamawiales nastepujace pozycje:<BR><BR>";
 if($HTTP_POST_VARS)
 {
  while (list($lvar, $lvalue)=each($HTTP_POST_VARS))
  {
   if(ereg("^PERS_", $lvar, $throwaway)>0)
   {
    echo "$lvar: $lvalue<BR>";
    if (ereg("[0-9]+", $lvalue, $regs)) $total+=$regs[0];
   }
  }
 }
 echo "RAZEM= " . $total . " zl<BR>";
?>

Hello,

I'm sorry but I don't quite understand what you want to do. I did notice a typo in your first page. The "method" attribute of your <form> tag is misspelled: You have "MATHOD" and it should be "method".

Also, you should use isset() to check the existence of a variable, use $_POST instead of $HTTP_POST_VARS, and use foreach() instead of while(list() = each()).

Here's a quick rewriting of billb.php to reflect these changes.

<?php

$total = 0;
echo "Zamawiales nastepujace pozycje:<br><br>\n";

if (isset($_POST))
{
    foreach ($_POST as $lvar => $lvalue)
    {
        if(ereg("^PERS_", $lvar, $throwaway)>0)
        {
            echo "$lvar: $lvalue<br>\n";

            if (ereg("[0-9]+", $lvalue, $regs))
            {
                $total += $regs[0];
            }
        }
    }
}

echo "RAZEM= " . $total . " zl<br>\n";
?>


If you are still having problems, please try asking your question again.


Take care,

Nik
http://www.bigaction.org/

Main problem was "MATHOD". :]].
Big thanks for that.
Second problem:
I don't want see word:"PERS_" in answer.
example:there is: "PERS_Dessert: Nalesniki (3zl)"
There should bee: "Dessert: Nalesniki (3zl)"
What i have to do?

Well, you can rename your form input fields to not include the PERS_ text. This might be made easier if you use arrays to store your form input data. You can organize all your desserts in an array, all your entrees in a different array, etc.

For more info, read my tip from a while back:
  http://p2p.wrox.com/archive/beginnin...2002-08/52.asp


If you'd just like to get your script working as soon as possible, then you can modify your regular expression check to only match the part you want to keep:

if(ereg("^PERS_(.*)$", $lvar, $matches)>0)
{
    echo "{$matches[1]}: $lvalue<br>\n";
    ...
}

$matches is my "regs" parameter. It is an array that stores all the parenthesized matches in the regular expression. $matches[0] is always the entire source string, if there was a match. $matches[1], $matches[2], ... are all the sub-parts of the regular expression that were enclosed in parenthesis.

In your expression, I added the text (.*)$, which means "and every character up till the end of the string.

Because I have the .* in parenthesis (that's the "every character" part), whatever matches THAT part of the expression will be put in it's own index into the $matches array. Since it's the first parenthesized expression, it will be $matches[1].

For more information:
  http://www.php.net/ereg


Take care,

Nik
http://www.bigaction.org/

:) thanks for solve my problem.