| Re: Undefined variable: Origin [message #174241 is a reply to message #174238] |
Sat, 28 May 2011 12:03   |
Co
Messages: 75
Registered: May 2011
Karma:
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On 28 mei, 11:57, Luuk <L...@invalid.lan> wrote:
> On 28-05-2011 11:41, Co wrote:
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>> 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:
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>>>> >> Hi All,
>
>>>> >> I give two values from one php page to the next.
>>>> >> <a href="MembersFrom.php?myCountry=Netherlands&myFlag=nl.gif">
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>>>> >> On the second page I first define them:
>>>> >> if (isset($_GET['myCountry'])) {
>>>> >> $Origin = $_GET['myCountry'];
>>>> >> $Flag = $_GET['myFlag'];
>>>> >> }
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>>>> >> $queryString = "WHERE email_activated='1' AND country='$Origin' AND
>>>> >> active='1' ORDER BY id ASC";
>>>> >> $sql2 = mysql_query("SELECT * FROM myMembers $queryString $limit") ;
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>>>> >> 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";
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>>>> >> How should I save the value in Origin so it can be used everytime
>>>> >> again?
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>>>> >> Marco
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>>>> > You will need a session
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>>>> >http://nl2.php.net/manual/en/function.session-start.php
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>>>> > --
>>>> > Luuk
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>>>> Can you have more than one sessions?
>>>> Could you give me some example of start and end of this session?
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>>>> Marco
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>>> What is wrong with the examples at the given page?
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>>> --
>>> Luuk
>> I put in this code:
>
>> session_start();
>> $_SESSION['Origin'] = $_GET['myCountry'];
>> $_SESSION['Flag'] = $_GET['myFlag'];
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>> //if (isset($_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']
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> 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'];
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