form to array to session variable

[gepner]

I am trying to collect form input to an array which is saved as a session variable. Each time the form is run I want to add new values to the array, but when I print the array only the last values show up. The sections of php code look like this:

<?php
if (!session_id()) session_start();
$answers = array();
session_register('answers');
?>
<?php require_once('Connections/connect.php'); ?>

<?php

echo "<form action='slide.php?ID=$colname_Recordset1' method='post'>";
echo "<div align=\'left\'> {$row_Recordset1['Title']} <br>";
echo "<img src={$row_Recordset1['ImageLink']} border='0' usemap='#thirdcleavage'>";
echo "<map name='thirdcleavage' id='thirdcleavage'>";
echo "<area shape='poly' coords= '{$row_Recordset1['Map']}' href=\"javascript:placeAnswer('1','t');\">";
echo "<area shape='rectangle' coords='0,-1,1000,999' href=\"javascript:placeAnswer('1','f');\">";
echo "</map>";
print "{$row_Recordset1['Text']} <br />";
print "<input name='question' type='text' id='question1'>";

echo "<input name='questionnum' type='hidden' id='questionnum' value={$row_Recordset1['ID']}> </div>";
echo "<input name='submit' type='submit' value='Submit your answer'>";
echo "</form>";
if(isset($POST['submit'])){

$question = $POST['question'];
$questionnum = $_POST['questionnum'];
$answers[$questionnum] = $question;
print '<H1><font color="red">Answer for question ' . $questionnum . ' has been recorded <br /> Click on another structure to continue.</font></H1>';

}

?>

<?php
if(is_array($answers)) {
foreach ($answers as $questionnum => $answer){
print "$answer<br />\n";
}
}

mysql_free_result($Recordset1);

?>

Any help appreciated.

[azunoman]

$answers[$questionnum][$i] = $question;

$i is incremented after each array row is added

[gepner]

Tried adding [$i] to no effect. Do I have to increment $i in code or is it done automatically?

Maybe I can explain what I'm doing better.

I think I understand arrays and I think I understand session variables but I am having trouble combining them. I am

developing a testing system where students pass from page to page and answer one question per page by submitting a

form that generates string values for question number and answer. I want to save these as an associative array

element in an array that is a session variable, and when the test is finished, pass all the values to a data table.

The session variable is called $answers and is set up with the following:
<?php
if (!session_id()) session_start();
$answers = array();
session_register('answers');
?>

Later in the code I capture the values with:
$question = $POST['question'];
$questionnum = $POST['questionnum'];
$answers[$questionnum] = $question;
where $questionnum is set to a string value of '1', '2', etc. and $question is set to either 'correct' or

'incorrect'.

Finally I do:
<?php
if(is_array($answers)) {
foreach ($answers as $questionnum => $answer){
print "$answer<br />\n";
}
}

mysql_free_result($Recordset1);

?>
The correct values for the last question answer prints out but none of the prior questions.

Since a session is an array and and array is an array, do I have to use a multidimensional array?

[azunoman]

I hope the following helps you.

<?php
if (!isset($questionnum))
$questionnum=1;
else
$questionnum++;

$answers=array();

$POST['answer']="there is not gravity, the world sucks";
//echo "</br>".$POST['answer']."";

$answers[$questionnum]=$_POST['answer'];

$questionnum++; // increment question number

$POST['answer']="I like red wine, but white is better for fighting off food posioning";
//echo "</br>".$POST['answer']."";
$answers[$questionnum]=$_POST['answer'];
$questionnum=1;
foreach ($answers as $thisanswer)
{
echo "</br>".$answers[$questionnum]."";
$questionnum++;
}
//
//or this where
// quetions and answers are contained in the array
unset ($questionnum);
if (!isset($questionnum))
$questionnum=1;
else
$questionnum++;

$questansw=array();

$POST['question']="is there gravity?";
$POST['answer']="there is no the world sucks";

$questansw['question'][$questionnum]=$POST['question'];
$questansw['answer'][$questionnum]=$POST['answer'];

$questionnum++;
$POST['question']="Which color wine is better for fighting off food posioning?";
$POST['answer']="White! but I like red wine better";

$questansw['question'][$questionnum]=$POST['question'];
$questansw['answer'][$questionnum]=$POST['answer'];

for ($i=1; $i<=$questionnum; $i++)
{
echo "</br>Question was:".$questansw['question'][$i]." Answer was: ".$questansw['answer'][$i]."";
}
exit();
?>

[gepner]

Azunoman:

Thanks for taking the time to post a replly to me. The thing that makes this difficult for me is that each row of the array is coming from a different page. Thats why the array has to be saved as a session variable, so that prior data is saved between pages.

[azunoman]

No problem...with two global changes...and you are most welcome, I use answering questions as my learning experience. I am a new at this also.

<?php
if (!isset($questionnum))
$questionnum=1;
else
$questionnum++;

$_SESSION['answers']=array();

$POST['answer']="there is not gravity, the world sucks";
//echo "</br>".$POST['answer']."";

$SESSION['answers'][$questionnum]=$POST['answer'];

$questionnum++; // increment question number

$POST['answer']="I like red wine, but white is better for fighting off food posioning";
//echo "</br>".$POST['answer']."";
$SESSION['answers'][$questionnum]=$POST['answer'];
$questionnum=1;
foreach ($SESSION['answers'] as $thisanswer)
{
echo "</br>".$SESSION['answers'][$questionnum]."";
$questionnum++;
}
//
//or this where
// quetions and answers are contained in the array
unset ($questionnum);
if (!isset($questionnum))
$questionnum=1;
else
$questionnum++;

$_SESSION['questansw']=array();

$POST['question']="is there gravity?";
$POST['answer']="there is no the world sucks";

$SESSION['questansw']['question'][$questionnum]=$POST['question'];
$SESSION['questansw']['answer'][$questionnum]=$POST['answer'];

$questionnum++;
$POST['question']="Which color wine is better for fighting off food posioning?";
$POST['answer']="White! but I like red wine better";

$SESSION['questansw']['question'][$questionnum]=$POST['question'];
$SESSION['questansw']['answer'][$questionnum]=$POST['answer'];

for ($i=1; $i<=$questionnum; $i++)
{
echo "</br>Question was:".$SESSION['questansw']['question'][$i]." Answer was: ".$SESSION['questansw']['answer'][$i]."";
}
exit();
?>