Retaining checkbox state on submit of page

I want to retain the state of checkboxes after the submit button has been clicked.
What it is currently doing is that it is resetting the checkboxes after the submit button is clicked.
My code is given below:-

Expand|Select|Wrap|Line Numbers

 
<?php

session_start();

?>

<html>

<head>

</head>

<body>

<form name="form1" action="chk10.php" method="POST">

<table>

<?PHP

for($j=1;$j<=10;$j++)

{

?>

<tr>

<td>

<input type="checkbox" name="chk[]" value=<?PHP echo $j ;?> <?PHP if(isset($_POST["chk"]){

$a=$_POST["chk"];

 for($i=1;$i<=10;$i++)

{

 $_SESSION['count'][$i]=$a[$i];

}

 for($i=1;$i<=10;$i++)

{

 if($_SESSION['count'][$i]==$a[$i])

 {

 echo 'checked="checked"' ;

 }

}

 > <?PHP echo $j; ?>

</td>

</tr>

<?PHP

}

?>

<tr>

<td>

<input type="submit" name="btn" value="save" />

</td>

</tr>
 
<tr>

<td>

<a href="session1.php">Show session content</a>

</td>

</tr>
 
</table>

</form>

</body>

</html>

Sep 1 '08 #1

Subscribe Post Reply

8157

Atli

5,058

Expert 4TB

Hi.

Keep in mind that a checkbox will not be sent unless it is checked.
So using the isset function is a good way to see if a box was selected.
For example:

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<?php

// Check if the box was sent.

$checked = "";

if(isset($_POST['box1'])) {

  $checked = 'checked="checked"';

}
 
// Print the form

echo <<<END

<form action="?" method="post">

  <input type="checkbox" name="box1" $checked /> Testbox<br />

  <input type="submit" />

</form>

END;

?>

Sep 1 '08 #2

virk1711

Hii,
Thanks for ur quick reply. Now my exact question is that first i need to create the 10 checkboxes which i have already done and then when i set the value of any of the checkboxes as checked, it should be saved in a session after clicking on the submit button.After clicking on the submit button the values of the checkboxes that were checked should remain checked and should not be reset.And then after checking the values of checkboxes time and again on clicking on submit button, the checked values should be saved in session again such that the duplicate values are not allowed in the session. Since i am novice in php i have tried a lot but without success, please help out.

Sep 2 '08 #3

virk1711

My question is that first i need to create the 10 checkboxes which i have already done and then when i set the value of any of the checkboxes as checked, it should be saved in a session after clicking on the submit button.After clicking on the submit button the values of the checkboxes that were checked should remain checked and should not be reset.And then after checking the values of checkboxes time and again on clicking on submit button, the checked values should be saved in session again such that the duplicate values are not allowed in the session. Since i am novice in php i have tried a lot but without success, please help out.
The code that i have tried is below:-

Expand|Select|Wrap|Line Numbers

  code goes here...

<?php

session_start();

?>

<html>

<head>

</head>

<body>

<form name="form1" action="chk10.php" method="POST">

<table>

<?PHP

for($j=1;$j<=10;$j++)

{

?>

<tr>

<td>

<input type="checkbox" name="chk[]" value=<?PHP echo $j ;?> <?PHP if(isset($_POST["chk"]){

$a=$_POST["chk"];

 for($i=1;$i<=10;$i++)

{

 $_SESSION['count'][$i]=$a[$i];

}

 for($i=1;$i<=10;$i++)

{

 if($_SESSION['count'][$i]==$a[$i])

 {

 echo 'checked="checked"' ;

 }

}

 > <?PHP echo $j; ?>

</td>

</tr>

<?PHP

}

?>

<tr>

<td>

<input type="submit" name="btn" value="save" />

</td>

</tr>
 
<tr>

<td>

<a href="session1.php">Show session content</a>

</td>

</tr>
 
</table>

</form>

</body>

</html>

Sep 2 '08 #4

Atli

5,058

Expert 4TB

Hi.

Do not double post your questions. This only serves to cause confusion and extra work for us moderators.

I have merged your new thread into this one.

Please read the Posting Guidelines before posting.

Thank you.
MODERATOR

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Retaining checkbox state on submit of page

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