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Undefined variable: Origin [message #174232] Sat, 28 May 2011 06:51 Go to next message
Co is currently offline  Co
Messages: 75
Registered: May 2011
Karma: 0
Member
Hi All,

I give two values from one php page to the next.
<a href="MembersFrom.php?myCountry=Netherlands&myFlag=nl.gif">

On the second page I first define them:
if (isset($_GET['myCountry'])) {
$Origin = $_GET['myCountry'];
$Flag = $_GET['myFlag'];
}

$queryString = "WHERE email_activated='1' AND country='$Origin' AND
active='1' ORDER BY id ASC";
$sql2 = mysql_query("SELECT * FROM myMembers $queryString $limit") ;

I limit the data to one record per page.
However when I want to go to the next record on a new page he doesn't
recognize the variable Origin anymore in here:
$queryString = "WHERE email_activated='1' AND country='$Origin' AND
active='1' ORDER BY id ASC";

How should I save the value in Origin so it can be used everytime
again?

Marco

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Re: Undefined variable: Origin [message #174234 is a reply to message #174232] Sat, 28 May 2011 09:17 Go to previous messageGo to next message
Luuk is currently offline  Luuk
Messages: 329
Registered: September 2010
Karma: 0
Senior Member
On 28-05-2011 08:51, Co wrote:
> Hi All,
>
> I give two values from one php page to the next.
> <a href="MembersFrom.php?myCountry=Netherlands&myFlag=nl.gif">
>
> On the second page I first define them:
> if (isset($_GET['myCountry'])) {
> $Origin = $_GET['myCountry'];
> $Flag = $_GET['myFlag'];
> }
>
> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
> active='1' ORDER BY id ASC";
> $sql2 = mysql_query("SELECT * FROM myMembers $queryString $limit") ;
>
> I limit the data to one record per page.
> However when I want to go to the next record on a new page he doesn't
> recognize the variable Origin anymore in here:
> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
> active='1' ORDER BY id ASC";
>
> How should I save the value in Origin so it can be used everytime
> again?
>
> Marco

You will need a session

http://nl2.php.net/manual/en/function.session-start.php


--
Luuk

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Re: Undefined variable: Origin [message #174235 is a reply to message #174234] Sat, 28 May 2011 09:30 Go to previous messageGo to next message
Co is currently offline  Co
Messages: 75
Registered: May 2011
Karma: 0
Member
On 28 mei, 11:17, Luuk <L...@invalid.lan> wrote:
> On 28-05-2011 08:51, Co wrote:
>
>
>
>
>
>
>
>
>
>> Hi All,
>
>> I give two values from one php page to the next.
>> <a href="MembersFrom.php?myCountry=Netherlands&myFlag=nl.gif">
>
>> On the second page I first define them:
>> if (isset($_GET['myCountry'])) {
>>    $Origin = $_GET['myCountry'];
>>    $Flag = $_GET['myFlag'];
>> }
>
>> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>> active='1' ORDER BY id ASC";
>> $sql2 = mysql_query("SELECT * FROM myMembers $queryString $limit") ;
>
>> I limit the data to one record per page.
>> However when I want to go to the next record on a new page he doesn't
>> recognize the variable Origin anymore in here:
>> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>> active='1' ORDER BY id ASC";
>
>> How should I save the value in Origin so it can be used everytime
>> again?
>
>> Marco
>
> You will need a session
>
> http://nl2.php.net/manual/en/function.session-start.php
>
> --
> Luuk

Can you have more than one sessions?
Could you give me some example of start and end of this session?

Marco

Report message to a moderator

Re: Undefined variable: Origin [message #174236 is a reply to message #174235] Sat, 28 May 2011 09:34 Go to previous messageGo to next message
Luuk is currently offline  Luuk
Messages: 329
Registered: September 2010
Karma: 0
Senior Member
On 28-05-2011 11:30, Co wrote:
> On 28 mei, 11:17, Luuk <L...@invalid.lan> wrote:
>> On 28-05-2011 08:51, Co wrote:
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>> Hi All,
>>
>>> I give two values from one php page to the next.
>>> <a href="MembersFrom.php?myCountry=Netherlands&myFlag=nl.gif">
>>
>>> On the second page I first define them:
>>> if (isset($_GET['myCountry'])) {
>>> $Origin = $_GET['myCountry'];
>>> $Flag = $_GET['myFlag'];
>>> }
>>
>>> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>> active='1' ORDER BY id ASC";
>>> $sql2 = mysql_query("SELECT * FROM myMembers $queryString $limit") ;
>>
>>> I limit the data to one record per page.
>>> However when I want to go to the next record on a new page he doesn't
>>> recognize the variable Origin anymore in here:
>>> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>> active='1' ORDER BY id ASC";
>>
>>> How should I save the value in Origin so it can be used everytime
>>> again?
>>
>>> Marco
>>
>> You will need a session
>>
>> http://nl2.php.net/manual/en/function.session-start.php
>>
>> --
>> Luuk
>
> Can you have more than one sessions?
> Could you give me some example of start and end of this session?
>
> Marco

What is wrong with the examples at the given page?

--
Luuk

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Re: Undefined variable: Origin [message #174237 is a reply to message #174236] Sat, 28 May 2011 09:41 Go to previous messageGo to next message
Co is currently offline  Co
Messages: 75
Registered: May 2011
Karma: 0
Member
On 28 mei, 11:34, Luuk <L...@invalid.lan> wrote:
> On 28-05-2011 11:30, Co wrote:
>
>
>
>
>
>
>
>
>
>> On 28 mei, 11:17, Luuk <L...@invalid.lan> wrote:
>>> On 28-05-2011 08:51, Co wrote:
>
>>>> Hi All,
>
>>>> I give two values from one php page to the next.
>>>> <a href="MembersFrom.php?myCountry=Netherlands&myFlag=nl.gif">
>
>>>> On the second page I first define them:
>>>> if (isset($_GET['myCountry'])) {
>>>>    $Origin = $_GET['myCountry'];
>>>>    $Flag = $_GET['myFlag'];
>>>> }
>
>>>> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>>> active='1' ORDER BY id ASC";
>>>> $sql2 = mysql_query("SELECT * FROM myMembers $queryString $limit") ;
>
>>>> I limit the data to one record per page.
>>>> However when I want to go to the next record on a new page he doesn't
>>>> recognize the variable Origin anymore in here:
>>>> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>>> active='1' ORDER BY id ASC";
>
>>>> How should I save the value in Origin so it can be used everytime
>>>> again?
>
>>>> Marco
>
>>> You will need a session
>
>>> http://nl2.php.net/manual/en/function.session-start.php
>
>>> --
>>> Luuk
>
>> Can you have more than one sessions?
>> Could you give me some example of start and end of this session?
>
>> Marco
>
> What is wrong with the examples at the given page?
>
> --
> Luuk
I put in this code:

session_start();
$_SESSION['Origin'] = $_GET['myCountry'];
$_SESSION['Flag'] = $_GET['myFlag'];

//if (isset($_GET['myCountry'])) {
// $Origin = $_GET['myCountry'];
// $Flag = $_GET['myFlag'];
//}
$queryString = "WHERE email_activated='1' AND country='$Origin' AND
active='1' ORDER BY id ASC";

How can I give the $_SESSION['Origin'] to the query?
Marco

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Re: Undefined variable: Origin [message #174238 is a reply to message #174237] Sat, 28 May 2011 09:57 Go to previous messageGo to next message
Luuk is currently offline  Luuk
Messages: 329
Registered: September 2010
Karma: 0
Senior Member
On 28-05-2011 11:41, Co wrote:
> On 28 mei, 11:34, Luuk <L...@invalid.lan> wrote:
>> On 28-05-2011 11:30, Co wrote:
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>> On 28 mei, 11:17, Luuk <L...@invalid.lan> wrote:
>>>> On 28-05-2011 08:51, Co wrote:
>>
>>>> > Hi All,
>>
>>>> > I give two values from one php page to the next.
>>>> > <a href="MembersFrom.php?myCountry=Netherlands&myFlag=nl.gif">
>>
>>>> > On the second page I first define them:
>>>> > if (isset($_GET['myCountry'])) {
>>>> > $Origin = $_GET['myCountry'];
>>>> > $Flag = $_GET['myFlag'];
>>>> > }
>>
>>>> > $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>>> > active='1' ORDER BY id ASC";
>>>> > $sql2 = mysql_query("SELECT * FROM myMembers $queryString $limit") ;
>>
>>>> > I limit the data to one record per page.
>>>> > However when I want to go to the next record on a new page he doesn't
>>>> > recognize the variable Origin anymore in here:
>>>> > $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>>> > active='1' ORDER BY id ASC";
>>
>>>> > How should I save the value in Origin so it can be used everytime
>>>> > again?
>>
>>>> > Marco
>>
>>>> You will need a session
>>
>>>> http://nl2.php.net/manual/en/function.session-start.php
>>
>>>> --
>>>> Luuk
>>
>>> Can you have more than one sessions?
>>> Could you give me some example of start and end of this session?
>>
>>> Marco
>>
>> What is wrong with the examples at the given page?
>>
>> --
>> Luuk
> I put in this code:
>
> session_start();
> $_SESSION['Origin'] = $_GET['myCountry'];
> $_SESSION['Flag'] = $_GET['myFlag'];
>
> //if (isset($_GET['myCountry'])) {
> // $Origin = $_GET['myCountry'];
> // $Flag = $_GET['myFlag'];
> //}
> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
> active='1' ORDER BY id ASC";
>
> How can I give the $_SESSION['Origin'] to the query?
> Marco

try this:
session_start();
print "Session Origin: ".$_SESSION['Origin']."<br>";
$_SESSION['Origin'] = $_GET['myCountry'];
print "Session Origin replaced with value from _GET:
".$_SESSION['Origin']."<br>";
$_SESSION['Flag'] = $_GET['myFlag'];


The first time you start this page $_SESSION['Origin'] will be empty

The second time it will hold the value of the previous $_GET['myCountry']

In other words,

If $_GET['myCountry'] is empty, you should not do:
$_SESSION['Origin'] = $_GET['myCountry'];


--
Luuk

Report message to a moderator

Re: Undefined variable: Origin [message #174240 is a reply to message #174238] Sat, 28 May 2011 11:58 Go to previous messageGo to next message
Co is currently offline  Co
Messages: 75
Registered: May 2011
Karma: 0
Member
On 28 mei, 11:57, Luuk <L...@invalid.lan> wrote:
> On 28-05-2011 11:41, Co wrote:
>
>
>
>
>
>
>
>
>
>> On 28 mei, 11:34, Luuk <L...@invalid.lan> wrote:
>>> On 28-05-2011 11:30, Co wrote:
>
>>>> On 28 mei, 11:17, Luuk <L...@invalid.lan> wrote:
>>>> > On 28-05-2011 08:51, Co wrote:
>
>>>> >> Hi All,
>
>>>> >> I give two values from one php page to the next.
>>>> >> <a href="MembersFrom.php?myCountry=Netherlands&myFlag=nl.gif">
>
>>>> >> On the second page I first define them:
>>>> >> if (isset($_GET['myCountry'])) {
>>>> >>    $Origin = $_GET['myCountry'];
>>>> >>    $Flag = $_GET['myFlag'];
>>>> >> }
>
>>>> >> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>>> >> active='1' ORDER BY id ASC";
>>>> >> $sql2 = mysql_query("SELECT * FROM myMembers $queryString $limit") ;
>
>>>> >> I limit the data to one record per page.
>>>> >> However when I want to go to the next record on a new page he doesn't
>>>> >> recognize the variable Origin anymore in here:
>>>> >> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>>> >> active='1' ORDER BY id ASC";
>
>>>> >> How should I save the value in Origin so it can be used everytime
>>>> >> again?
>
>>>> >> Marco
>
>>>> > You will need a session
>
>>>> >http://nl2.php.net/manual/en/function.session-start.php
>
>>>> > --
>>>> > Luuk
>
>>>> Can you have more than one sessions?
>>>> Could you give me some example of start and end of this session?
>
>>>> Marco
>
>>> What is wrong with the examples at the given page?
>
>>> --
>>> Luuk
>> I put in this code:
>
>> session_start();
>> $_SESSION['Origin'] = $_GET['myCountry'];
>> $_SESSION['Flag']   = $_GET['myFlag'];
>
>> //if (isset($_GET['myCountry'])) {
>> // $Origin = $_GET['myCountry'];
>> // $Flag = $_GET['myFlag'];
>> //}
>> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>> active='1' ORDER BY id ASC";
>
>> How can I give the $_SESSION['Origin'] to the query?
>> Marco
>
> try this:
>         session_start();
>         print "Session Origin: ".$_SESSION['Origin']."<br>";
>         $_SESSION['Origin'] = $_GET['myCountry'];
>         print "Session Origin replaced with value from _GET:
> ".$_SESSION['Origin']."<br>";
>         $_SESSION['Flag']   = $_GET['myFlag'];
>
> The first time you start this page $_SESSION['Origin'] will be empty
>
> The second time it will hold the value of the previous $_GET['myCountry']
>
> In other words,
>
> If $_GET['myCountry'] is empty, you should not do:
> $_SESSION['Origin'] = $_GET['myCountry'];
>
> --
> Luuk

When I add this code I will get message session already started.
That's why I asked if you can have more then one session.
Marco

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Re: Undefined variable: Origin [message #174241 is a reply to message #174238] Sat, 28 May 2011 12:03 Go to previous messageGo to next message
Co is currently offline  Co
Messages: 75
Registered: May 2011
Karma: 0
Member
On 28 mei, 11:57, Luuk <L...@invalid.lan> wrote:
> On 28-05-2011 11:41, Co wrote:
>
>
>
>
>
>
>
>
>
>> On 28 mei, 11:34, Luuk <L...@invalid.lan> wrote:
>>> On 28-05-2011 11:30, Co wrote:
>
>>>> On 28 mei, 11:17, Luuk <L...@invalid.lan> wrote:
>>>> > On 28-05-2011 08:51, Co wrote:
>
>>>> >> Hi All,
>
>>>> >> I give two values from one php page to the next.
>>>> >> <a href="MembersFrom.php?myCountry=Netherlands&myFlag=nl.gif">
>
>>>> >> On the second page I first define them:
>>>> >> if (isset($_GET['myCountry'])) {
>>>> >>    $Origin = $_GET['myCountry'];
>>>> >>    $Flag = $_GET['myFlag'];
>>>> >> }
>
>>>> >> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>>> >> active='1' ORDER BY id ASC";
>>>> >> $sql2 = mysql_query("SELECT * FROM myMembers $queryString $limit") ;
>
>>>> >> I limit the data to one record per page.
>>>> >> However when I want to go to the next record on a new page he doesn't
>>>> >> recognize the variable Origin anymore in here:
>>>> >> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>>> >> active='1' ORDER BY id ASC";
>
>>>> >> How should I save the value in Origin so it can be used everytime
>>>> >> again?
>
>>>> >> Marco
>
>>>> > You will need a session
>
>>>> >http://nl2.php.net/manual/en/function.session-start.php
>
>>>> > --
>>>> > Luuk
>
>>>> Can you have more than one sessions?
>>>> Could you give me some example of start and end of this session?
>
>>>> Marco
>
>>> What is wrong with the examples at the given page?
>
>>> --
>>> Luuk
>> I put in this code:
>
>> session_start();
>> $_SESSION['Origin'] = $_GET['myCountry'];
>> $_SESSION['Flag']   = $_GET['myFlag'];
>
>> //if (isset($_GET['myCountry'])) {
>> // $Origin = $_GET['myCountry'];
>> // $Flag = $_GET['myFlag'];
>> //}
>> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>> active='1' ORDER BY id ASC";
>
>> How can I give the $_SESSION['Origin'] to the query?
>> Marco
>
> try this:
>         session_start();
>         print "Session Origin: ".$_SESSION['Origin']."<br>";
>         $_SESSION['Origin'] = $_GET['myCountry'];
>         print "Session Origin replaced with value from _GET:
> ".$_SESSION['Origin']."<br>";
>         $_SESSION['Flag']   = $_GET['myFlag'];
>
> The first time you start this page $_SESSION['Origin'] will be empty
>
> The second time it will hold the value of the previous $_GET['myCountry']
>
> In other words,
>
> If $_GET['myCountry'] is empty, you should not do:
> $_SESSION['Origin'] = $_GET['myCountry'];
>
> --
> Luuk


When I try your code and go to the second page I get three
notifications:

Notice: A session had already been started - ignoring session_start()
Notice: Undefined index: myCountry
Notice: Undefined index: myFlag

on these lines:
$_SESSION['Origin'] = $_GET['myCountry'];
$_SESSION['Flag'] = $_GET['myFlag'];

Report message to a moderator

Re: Undefined variable: Origin [message #174243 is a reply to message #174241] Sat, 28 May 2011 12:08 Go to previous messageGo to next message
Luuk is currently offline  Luuk
Messages: 329
Registered: September 2010
Karma: 0
Senior Member
On 28-05-2011 14:03, Co wrote:
> On 28 mei, 11:57, Luuk <L...@invalid.lan> wrote:
>> On 28-05-2011 11:41, Co wrote:
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>> On 28 mei, 11:34, Luuk <L...@invalid.lan> wrote:
>>>> On 28-05-2011 11:30, Co wrote:
>>
>>>> > On 28 mei, 11:17, Luuk <L...@invalid.lan> wrote:
>>>> >> On 28-05-2011 08:51, Co wrote:
>>
>>>> >>> Hi All,
>>
>>>> >>> I give two values from one php page to the next.
>>>> >>> <a href="MembersFrom.php?myCountry=Netherlands&myFlag=nl.gif">
>>
>>>> >>> On the second page I first define them:
>>>> >>> if (isset($_GET['myCountry'])) {
>>>> >>> $Origin = $_GET['myCountry'];
>>>> >>> $Flag = $_GET['myFlag'];
>>>> >>> }
>>
>>>> >>> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>>> >>> active='1' ORDER BY id ASC";
>>>> >>> $sql2 = mysql_query("SELECT * FROM myMembers $queryString $limit") ;
>>
>>>> >>> I limit the data to one record per page.
>>>> >>> However when I want to go to the next record on a new page he doesn't
>>>> >>> recognize the variable Origin anymore in here:
>>>> >>> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>>> >>> active='1' ORDER BY id ASC";
>>
>>>> >>> How should I save the value in Origin so it can be used everytime
>>>> >>> again?
>>
>>>> >>> Marco
>>
>>>> >> You will need a session
>>
>>>> >> http://nl2.php.net/manual/en/function.session-start.php
>>
>>>> >> --
>>>> >> Luuk
>>
>>>> > Can you have more than one sessions?
>>>> > Could you give me some example of start and end of this session?
>>
>>>> > Marco
>>
>>>> What is wrong with the examples at the given page?
>>
>>>> --
>>>> Luuk
>>> I put in this code:
>>
>>> session_start();
>>> $_SESSION['Origin'] = $_GET['myCountry'];
>>> $_SESSION['Flag'] = $_GET['myFlag'];
>>
>>> //if (isset($_GET['myCountry'])) {
>>> // $Origin = $_GET['myCountry'];
>>> // $Flag = $_GET['myFlag'];
>>> //}
>>> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>> active='1' ORDER BY id ASC";
>>
>>> How can I give the $_SESSION['Origin'] to the query?
>>> Marco
>>
>> try this:
>> session_start();
>> print "Session Origin: ".$_SESSION['Origin']."<br>";
>> $_SESSION['Origin'] = $_GET['myCountry'];
>> print "Session Origin replaced with value from _GET:
>> ".$_SESSION['Origin']."<br>";
>> $_SESSION['Flag'] = $_GET['myFlag'];
>>
>> The first time you start this page $_SESSION['Origin'] will be empty
>>
>> The second time it will hold the value of the previous $_GET['myCountry']
>>
>> In other words,
>>
>> If $_GET['myCountry'] is empty, you should not do:
>> $_SESSION['Origin'] = $_GET['myCountry'];
>>
>> --
>> Luuk
>
>
> When I try your code and go to the second page I get three
> notifications:
>
> Notice: A session had already been started - ignoring session_start()
> Notice: Undefined index: myCountry
> Notice: Undefined index: myFlag
>
> on these lines:
> $_SESSION['Origin'] = $_GET['myCountry'];
> $_SESSION['Flag'] = $_GET['myFlag'];

so, *why* do tou do this (quoted from your original post)

if (isset($_GET['myCountry'])) {
$Origin = $_GET['myCountry'];
$Flag = $_GET['myFlag'];
}


Question: Do you want to learn programming, or just want to learn how to
copy/paste ?

--
Luuk

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Re: Undefined variable: Origin [message #174244 is a reply to message #174243] Sat, 28 May 2011 12:22 Go to previous messageGo to next message
Co is currently offline  Co
Messages: 75
Registered: May 2011
Karma: 0
Member
On 28 mei, 14:08, Luuk <L...@invalid.lan> wrote:
> On 28-05-2011 14:03, Co wrote:
>
>
>
>
>
>
>
>
>
>> On 28 mei, 11:57, Luuk <L...@invalid.lan> wrote:
>>> On 28-05-2011 11:41, Co wrote:
>
>>>> On 28 mei, 11:34, Luuk <L...@invalid.lan> wrote:
>>>> > On 28-05-2011 11:30, Co wrote:
>
>>>> >> On 28 mei, 11:17, Luuk <L...@invalid.lan> wrote:
>>>> >>> On 28-05-2011 08:51, Co wrote:
>
>>>> >>>> Hi All,
>
>>>> >>>> I give two values from one php page to the next.
>>>> >>>> <a href="MembersFrom.php?myCountry=Netherlands&myFlag=nl.gif">
>
>>>> >>>> On the second page I first define them:
>>>> >>>> if (isset($_GET['myCountry'])) {
>>>> >>>>    $Origin = $_GET['myCountry'];
>>>> >>>>    $Flag = $_GET['myFlag'];
>>>> >>>> }
>
>>>> >>>> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>>> >>>> active='1' ORDER BY id ASC";
>>>> >>>> $sql2 = mysql_query("SELECT * FROM myMembers $queryString $limit") ;
>
>>>> >>>> I limit the data to one record per page.
>>>> >>>> However when I want to go to the next record on a new page he doesn't
>>>> >>>> recognize the variable Origin anymore in here:
>>>> >>>> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>>> >>>> active='1' ORDER BY id ASC";
>
>>>> >>>> How should I save the value in Origin so it can be used everytime
>>>> >>>> again?
>
>>>> >>>> Marco
>
>>>> >>> You will need a session
>
>>>> >>>http://nl2.php.net/manual/en/function.session-start.php
>
>>>> >>> --
>>>> >>> Luuk
>
>>>> >> Can you have more than one sessions?
>>>> >> Could you give me some example of start and end of this session?
>
>>>> >> Marco
>
>>>> > What is wrong with the examples at the given page?
>
>>>> > --
>>>> > Luuk
>>>> I put in this code:
>
>>>> session_start();
>>>> $_SESSION['Origin'] = $_GET['myCountry'];
>>>> $_SESSION['Flag']   = $_GET['myFlag'];
>
>>>> //if (isset($_GET['myCountry'])) {
>>>> // $Origin = $_GET['myCountry'];
>>>> // $Flag = $_GET['myFlag'];
>>>> //}
>>>> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>>> active='1' ORDER BY id ASC";
>
>>>> How can I give the $_SESSION['Origin'] to the query?
>>>> Marco
>
>>> try this:
>>>         session_start();
>>>         print "Session Origin: ".$_SESSION['Origin']."<br>";
>>>         $_SESSION['Origin'] = $_GET['myCountry'];
>>>         print "Session Origin replaced with value from _GET:
>>> ".$_SESSION['Origin']."<br>";
>>>         $_SESSION['Flag']   = $_GET['myFlag'];
>
>>> The first time you start this page $_SESSION['Origin'] will be empty
>
>>> The second time it will hold the value of the previous $_GET['myCountry']
>
>>> In other words,
>
>>> If $_GET['myCountry'] is empty, you should not do:
>>> $_SESSION['Origin'] = $_GET['myCountry'];
>
>>> --
>>> Luuk
>
>> When I try your code and go to the second page I get three
>> notifications:
>
>> Notice: A session had already been started - ignoring session_start()
>> Notice: Undefined index: myCountry
>> Notice: Undefined index: myFlag
>
>> on these lines:
>> $_SESSION['Origin'] = $_GET['myCountry'];
>> $_SESSION['Flag']   = $_GET['myFlag'];
>
> so, *why* do tou do this (quoted from your original post)
>
> if (isset($_GET['myCountry'])) {
>         $Origin = $_GET['myCountry'];
>         $Flag = $_GET['myFlag'];
>
> }
>
> Question: Do you want to learn programming, or just want to learn how to
> copy/paste ?
>
> --
> Luuk

I did that because i got the warning for unidentified variable.
Of course I want to learn how to program but what use is it if it
doesn't work.

The point is that I have to take to variables from my main page.
Country and flag.
MembersFrom.php?myCountry=Netherlands&myFlag=nl.gif
In the record form I want to show all members from Country X and show
their flag Y.
This works with what I used in the beginning. However if I go to the
next record (next page)
the values get lost.
So I need to store the values somewhere if I load :
MembersFrom.php?pn=2

Marco

Report message to a moderator

Re: Undefined variable: Origin [message #174247 is a reply to message #174244] Sat, 28 May 2011 12:37 Go to previous messageGo to next message
Luuk is currently offline  Luuk
Messages: 329
Registered: September 2010
Karma: 0
Senior Member
On 28-05-2011 14:22, Co wrote:
> On 28 mei, 14:08, Luuk <L...@invalid.lan> wrote:
>> On 28-05-2011 14:03, Co wrote:
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>> On 28 mei, 11:57, Luuk <L...@invalid.lan> wrote:
>>>> On 28-05-2011 11:41, Co wrote:
>>
>>>> > On 28 mei, 11:34, Luuk <L...@invalid.lan> wrote:
>>>> >> On 28-05-2011 11:30, Co wrote:
>>
>>>> >>> On 28 mei, 11:17, Luuk <L...@invalid.lan> wrote:
>>>> >>>> On 28-05-2011 08:51, Co wrote:
>>
>>>> >>>>> Hi All,
>>
>>>> >>>>> I give two values from one php page to the next.
>>>> >>>>> <a href="MembersFrom.php?myCountry=Netherlands&myFlag=nl.gif">
>>
>>>> >>>>> On the second page I first define them:
>>>> >>>>> if (isset($_GET['myCountry'])) {
>>>> >>>>> $Origin = $_GET['myCountry'];
>>>> >>>>> $Flag = $_GET['myFlag'];
>>>> >>>>> }
>>
>>>> >>>>> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>>> >>>>> active='1' ORDER BY id ASC";
>>>> >>>>> $sql2 = mysql_query("SELECT * FROM myMembers $queryString $limit") ;
>>
>>>> >>>>> I limit the data to one record per page.
>>>> >>>>> However when I want to go to the next record on a new page he doesn't
>>>> >>>>> recognize the variable Origin anymore in here:
>>>> >>>>> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>>> >>>>> active='1' ORDER BY id ASC";
>>
>>>> >>>>> How should I save the value in Origin so it can be used everytime
>>>> >>>>> again?
>>
>>>> >>>>> Marco
>>
>>>> >>>> You will need a session
>>
>>>> >>>> http://nl2.php.net/manual/en/function.session-start.php
>>
>>>> >>>> --
>>>> >>>> Luuk
>>
>>>> >>> Can you have more than one sessions?
>>>> >>> Could you give me some example of start and end of this session?
>>
>>>> >>> Marco
>>
>>>> >> What is wrong with the examples at the given page?
>>
>>>> >> --
>>>> >> Luuk
>>>> > I put in this code:
>>
>>>> > session_start();
>>>> > $_SESSION['Origin'] = $_GET['myCountry'];
>>>> > $_SESSION['Flag'] = $_GET['myFlag'];
>>
>>>> > //if (isset($_GET['myCountry'])) {
>>>> > // $Origin = $_GET['myCountry'];
>>>> > // $Flag = $_GET['myFlag'];
>>>> > //}
>>>> > $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>>> > active='1' ORDER BY id ASC";
>>
>>>> > How can I give the $_SESSION['Origin'] to the query?
>>>> > Marco
>>
>>>> try this:
>>>> session_start();
>>>> print "Session Origin: ".$_SESSION['Origin']."<br>";
>>>> $_SESSION['Origin'] = $_GET['myCountry'];
>>>> print "Session Origin replaced with value from _GET:
>>>> ".$_SESSION['Origin']."<br>";
>>>> $_SESSION['Flag'] = $_GET['myFlag'];
>>
>>>> The first time you start this page $_SESSION['Origin'] will be empty
>>
>>>> The second time it will hold the value of the previous $_GET['myCountry']
>>
>>>> In other words,
>>
>>>> If $_GET['myCountry'] is empty, you should not do:
>>>> $_SESSION['Origin'] = $_GET['myCountry'];
>>
>>>> --
>>>> Luuk
>>
>>> When I try your code and go to the second page I get three
>>> notifications:
>>
>>> Notice: A session had already been started - ignoring session_start()
>>> Notice: Undefined index: myCountry
>>> Notice: Undefined index: myFlag
>>
>>> on these lines:
>>> $_SESSION['Origin'] = $_GET['myCountry'];
>>> $_SESSION['Flag'] = $_GET['myFlag'];
>>
>> so, *why* do tou do this (quoted from your original post)
>>
>> if (isset($_GET['myCountry'])) {
>> $Origin = $_GET['myCountry'];
>> $Flag = $_GET['myFlag'];
>>
>> }
>>
>> Question: Do you want to learn programming, or just want to learn how to
>> copy/paste ?
>>
>> --
>> Luuk
>
> I did that because i got the warning for unidentified variable.
> Of course I want to learn how to program but what use is it if it
> doesn't work.
>
> The point is that I have to take to variables from my main page.
> Country and flag.
> MembersFrom.php?myCountry=Netherlands&myFlag=nl.gif
> In the record form I want to show all members from Country X and show
> their flag Y.
> This works with what I used in the beginning. However if I go to the
> next record (next page)
> the values get lost.
> So I need to store the values somewhere if I load :
> MembersFrom.php?pn=2
>
> Marco

That was your question in the first place

i answered that you could use sessions to do that

in your first page 'MembersFrom.php' you store 'myCountry' in a session
variable:
$_SESSION['Origin'] = $_GET['myCountry'];

and in you second page, after the session started, you can acces the
values again via the variable $_SESSION['Origin']


session_start();
if (isset($_GET['myCountry'])) {
// Get values if they are defined in the URL
$Origin = $_GET['myCountry'];
// and store them in the session
$_SESSION['Origin'] = $Origin;
} else {
// Get the value from the session
$Origin = $_SESSION['Origin'];
}




--
Luuk

Report message to a moderator

Re: Undefined variable: Origin [message #174249 is a reply to message #174247] Sat, 28 May 2011 12:42 Go to previous messageGo to next message
Co is currently offline  Co
Messages: 75
Registered: May 2011
Karma: 0
Member
On 28 mei, 14:37, Luuk <L...@invalid.lan> wrote:
> On 28-05-2011 14:22, Co wrote:
>
>
>
>
>
>
>
>
>
>> On 28 mei, 14:08, Luuk <L...@invalid.lan> wrote:
>>> On 28-05-2011 14:03, Co wrote:
>
>>>> On 28 mei, 11:57, Luuk <L...@invalid.lan> wrote:
>>>> > On 28-05-2011 11:41, Co wrote:
>
>>>> >> On 28 mei, 11:34, Luuk <L...@invalid.lan> wrote:
>>>> >>> On 28-05-2011 11:30, Co wrote:
>
>>>> >>>> On 28 mei, 11:17, Luuk <L...@invalid.lan> wrote:
>>>> >>>>> On 28-05-2011 08:51, Co wrote:
>
>>>> >>>>>> Hi All,
>
>>>> >>>>>> I give two values from one php page to the next.
>>>> >>>>>> <a href="MembersFrom.php?myCountry=Netherlands&myFlag=nl.gif">
>
>>>> >>>>>> On the second page I first define them:
>>>> >>>>>> if (isset($_GET['myCountry'])) {
>>>> >>>>>>    $Origin = $_GET['myCountry'];
>>>> >>>>>>    $Flag = $_GET['myFlag'];
>>>> >>>>>> }
>
>>>> >>>>>> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>>> >>>>>> active='1' ORDER BY id ASC";
>>>> >>>>>> $sql2 = mysql_query("SELECT * FROM myMembers $queryString $limit") ;
>
>>>> >>>>>> I limit the data to one record per page.
>>>> >>>>>> However when I want to go to the next record on a new page he doesn't
>>>> >>>>>> recognize the variable Origin anymore in here:
>>>> >>>>>> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>>> >>>>>> active='1' ORDER BY id ASC";
>
>>>> >>>>>> How should I save the value in Origin so it can be used everytime
>>>> >>>>>> again?
>
>>>> >>>>>> Marco
>
>>>> >>>>> You will need a session
>
>>>> >>>>>http://nl2.php.net/manual/en/function.session-start.php
>
>>>> >>>>> --
>>>> >>>>> Luuk
>
>>>> >>>> Can you have more than one sessions?
>>>> >>>> Could you give me some example of start and end of this session?
>
>>>> >>>> Marco
>
>>>> >>> What is wrong with the examples at the given page?
>
>>>> >>> --
>>>> >>> Luuk
>>>> >> I put in this code:
>
>>>> >> session_start();
>>>> >> $_SESSION['Origin'] = $_GET['myCountry'];
>>>> >> $_SESSION['Flag']   = $_GET['myFlag'];
>
>>>> >> //if (isset($_GET['myCountry'])) {
>>>> >> // $Origin = $_GET['myCountry'];
>>>> >> // $Flag = $_GET['myFlag'];
>>>> >> //}
>>>> >> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>>> >> active='1' ORDER BY id ASC";
>
>>>> >> How can I give the $_SESSION['Origin'] to the query?
>>>> >> Marco
>
>>>> > try this:
>>>> >         session_start();
>>>> >         print "Session Origin: ".$_SESSION['Origin']."<br>";
>>>> >         $_SESSION['Origin'] = $_GET['myCountry'];
>>>> >         print "Session Origin replaced with value from _GET:
>>>> > ".$_SESSION['Origin']."<br>";
>>>> >         $_SESSION['Flag']   = $_GET['myFlag'];
>
>>>> > The first time you start this page $_SESSION['Origin'] will be empty
>
>>>> > The second time it will hold the value of the previous $_GET['myCountry']
>
>>>> > In other words,
>
>>>> > If $_GET['myCountry'] is empty, you should not do:
>>>> > $_SESSION['Origin'] = $_GET['myCountry'];
>
>>>> > --
>>>> > Luuk
>
>>>> When I try your code and go to the second page I get three
>>>> notifications:
>
>>>> Notice: A session had already been started - ignoring session_start()
>>>> Notice: Undefined index: myCountry
>>>> Notice: Undefined index: myFlag
>
>>>> on these lines:
>>>> $_SESSION['Origin'] = $_GET['myCountry'];
>>>> $_SESSION['Flag']   = $_GET['myFlag'];
>
>>> so, *why* do tou do this (quoted from your original post)
>
>>> if (isset($_GET['myCountry'])) {
>>>         $Origin = $_GET['myCountry'];
>>>         $Flag = $_GET['myFlag'];
>
>>> }
>
>>> Question: Do you want to learn programming, or just want to learn how to
>>> copy/paste ?
>
>>> --
>>> Luuk
>
>> I did that because i got the warning for unidentified variable.
>> Of course I want to learn how to program but what use is it if it
>> doesn't work.
>
>> The point is that I have to take to variables from my main page.
>> Country and flag.
>> MembersFrom.php?myCountry=Netherlands&myFlag=nl.gif
>> In the record form I want to show all members from Country X and show
>> their flag Y.
>> This works with what I used in the  beginning. However if I go to the
>> next record (next page)
>> the values get lost.
>> So I need to store the values somewhere if I load :
>> MembersFrom.php?pn=2
>
>> Marco
>
> That was your question in the first place
>
> i answered that you could use sessions to do that
>
> in your first page 'MembersFrom.php' you store 'myCountry' in a session
> variable:
> $_SESSION['Origin'] = $_GET['myCountry'];
>
> and in you second page, after the session started, you can acces the
> values again via the variable  $_SESSION['Origin']
>
> session_start();
> if (isset($_GET['myCountry'])) {
>         // Get values if they are defined in the URL
>         $Origin = $_GET['myCountry'];
>         // and store them in the session
>         $_SESSION['Origin'] = $Origin;} else {
>
>         // Get the value from the session
>         $Origin = $_SESSION['Origin'];
>
> }
>
> --
> Luuk

Luuk,

I do understand that but it still gives me this warning that a session
has already started.
A session starts when I open the index.php and the checkusrlog.php is
run.

Marco

Report message to a moderator

Re: Undefined variable: Origin [message #174250 is a reply to message #174249] Sat, 28 May 2011 12:56 Go to previous message
Luuk is currently offline  Luuk
Messages: 329
Registered: September 2010
Karma: 0
Senior Member
On 28-05-2011 14:42, Co wrote:
> On 28 mei, 14:37, Luuk <L...@invalid.lan> wrote:
>> On 28-05-2011 14:22, Co wrote:
>>
>>
>>
>>
>>
>>
>>
>>
>>
>>> On 28 mei, 14:08, Luuk <L...@invalid.lan> wrote:
>>>> On 28-05-2011 14:03, Co wrote:
>>
>>>> > On 28 mei, 11:57, Luuk <L...@invalid.lan> wrote:
>>>> >> On 28-05-2011 11:41, Co wrote:
>>
>>>> >>> On 28 mei, 11:34, Luuk <L...@invalid.lan> wrote:
>>>> >>>> On 28-05-2011 11:30, Co wrote:
>>
>>>> >>>>> On 28 mei, 11:17, Luuk <L...@invalid.lan> wrote:
>>>> >>>>>> On 28-05-2011 08:51, Co wrote:
>>
>>>> >>>>>>> Hi All,
>>
>>>> >>>>>>> I give two values from one php page to the next.
>>>> >>>>>>> <a href="MembersFrom.php?myCountry=Netherlands&myFlag=nl.gif">
>>
>>>> >>>>>>> On the second page I first define them:
>>>> >>>>>>> if (isset($_GET['myCountry'])) {
>>>> >>>>>>> $Origin = $_GET['myCountry'];
>>>> >>>>>>> $Flag = $_GET['myFlag'];
>>>> >>>>>>> }
>>
>>>> >>>>>>> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>>> >>>>>>> active='1' ORDER BY id ASC";
>>>> >>>>>>> $sql2 = mysql_query("SELECT * FROM myMembers $queryString $limit") ;
>>
>>>> >>>>>>> I limit the data to one record per page.
>>>> >>>>>>> However when I want to go to the next record on a new page he doesn't
>>>> >>>>>>> recognize the variable Origin anymore in here:
>>>> >>>>>>> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>>> >>>>>>> active='1' ORDER BY id ASC";
>>
>>>> >>>>>>> How should I save the value in Origin so it can be used everytime
>>>> >>>>>>> again?
>>
>>>> >>>>>>> Marco
>>
>>>> >>>>>> You will need a session
>>
>>>> >>>>>> http://nl2.php.net/manual/en/function.session-start.php
>>
>>>> >>>>>> --
>>>> >>>>>> Luuk
>>
>>>> >>>>> Can you have more than one sessions?
>>>> >>>>> Could you give me some example of start and end of this session?
>>
>>>> >>>>> Marco
>>
>>>> >>>> What is wrong with the examples at the given page?
>>
>>>> >>>> --
>>>> >>>> Luuk
>>>> >>> I put in this code:
>>
>>>> >>> session_start();
>>>> >>> $_SESSION['Origin'] = $_GET['myCountry'];
>>>> >>> $_SESSION['Flag'] = $_GET['myFlag'];
>>
>>>> >>> //if (isset($_GET['myCountry'])) {
>>>> >>> // $Origin = $_GET['myCountry'];
>>>> >>> // $Flag = $_GET['myFlag'];
>>>> >>> //}
>>>> >>> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>>> >>> active='1' ORDER BY id ASC";
>>
>>>> >>> How can I give the $_SESSION['Origin'] to the query?
>>>> >>> Marco
>>
>>>> >> try this:
>>>> >> session_start();
>>>> >> print "Session Origin: ".$_SESSION['Origin']."<br>";
>>>> >> $_SESSION['Origin'] = $_GET['myCountry'];
>>>> >> print "Session Origin replaced with value from _GET:
>>>> >> ".$_SESSION['Origin']."<br>";
>>>> >> $_SESSION['Flag'] = $_GET['myFlag'];
>>
>>>> >> The first time you start this page $_SESSION['Origin'] will be empty
>>
>>>> >> The second time it will hold the value of the previous $_GET['myCountry']
>>
>>>> >> In other words,
>>
>>>> >> If $_GET['myCountry'] is empty, you should not do:
>>>> >> $_SESSION['Origin'] = $_GET['myCountry'];
>>
>>>> >> --
>>>> >> Luuk
>>
>>>> > When I try your code and go to the second page I get three
>>>> > notifications:
>>
>>>> > Notice: A session had already been started - ignoring session_start()
>>>> > Notice: Undefined index: myCountry
>>>> > Notice: Undefined index: myFlag
>>
>>>> > on these lines:
>>>> > $_SESSION['Origin'] = $_GET['myCountry'];
>>>> > $_SESSION['Flag'] = $_GET['myFlag'];
>>
>>>> so, *why* do tou do this (quoted from your original post)
>>
>>>> if (isset($_GET['myCountry'])) {
>>>> $Origin = $_GET['myCountry'];
>>>> $Flag = $_GET['myFlag'];
>>
>>>> }
>>
>>>> Question: Do you want to learn programming, or just want to learn how to
>>>> copy/paste ?
>>
>>>> --
>>>> Luuk
>>
>>> I did that because i got the warning for unidentified variable.
>>> Of course I want to learn how to program but what use is it if it
>>> doesn't work.
>>
>>> The point is that I have to take to variables from my main page.
>>> Country and flag.
>>> MembersFrom.php?myCountry=Netherlands&myFlag=nl.gif
>>> In the record form I want to show all members from Country X and show
>>> their flag Y.
>>> This works with what I used in the beginning. However if I go to the
>>> next record (next page)
>>> the values get lost.
>>> So I need to store the values somewhere if I load :
>>> MembersFrom.php?pn=2
>>
>>> Marco
>>
>> That was your question in the first place
>>
>> i answered that you could use sessions to do that
>>
>> in your first page 'MembersFrom.php' you store 'myCountry' in a session
>> variable:
>> $_SESSION['Origin'] = $_GET['myCountry'];
>>
>> and in you second page, after the session started, you can acces the
>> values again via the variable $_SESSION['Origin']
>>
>> session_start();
>> if (isset($_GET['myCountry'])) {
>> // Get values if they are defined in the URL
>> $Origin = $_GET['myCountry'];
>> // and store them in the session
>> $_SESSION['Origin'] = $Origin;} else {
>>
>> // Get the value from the session
>> $Origin = $_SESSION['Origin'];
>>
>> }
>>
>> --
>> Luuk
>
> Luuk,
>
> I do understand that but it still gives me this warning that a session
> has already started.
> A session starts when I open the index.php and the checkusrlog.php is
> run.
>
> Marco

My crystal ball is not clear about how 'index.php', 'MembersFrom.php'
and 'checkusrlog.php' relatie to each other.....

You only need to start a session once (per page that is requested)

If you include other php-scripts in one page, than you should not try to
start a session from those included pages, if a session is already
started from the main page...


--
Luuk

Report message to a moderator

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