[RESOLVED] radiogroup and sessions

[paldo]

I have this form:

  <?php
session_start();
echo "<form name=\"aaaa\" method=\"post\"  action=\"order_select1.php\">";
?>



  <input type="radio" name="RadioGroup" value="I order item1" />
  I order item1.


  <p>
    <input type="radio" name="RadioGroup" value="I order item2." />
    I order item2.

  </p>

<input type="submit" name="submit"  value="  I order" />

The value is passed to:

<?php
session_start();

$_SESSION['RadioGroup'] = $_POST['RadioGroup'];

?>

<?php


$selected_radio = $_POST['RadioGroup'];
print " <b>$selected_radio</b><br />";
?>

With sessions I would like that if I click on the back button the selected value is still selected.

As I have previously learned on this forum, I need to change the following:

Instead of value="I order item1" something like:
value="<?php echo (!empty($SESSION["RadioGroup1"]) ? htmlspecialchars($SESSION["RadioGroup1"]):"" ) ; ?>"

Instead of value="I order item2" something like:
value="<?php echo (!empty($SESSION["RadioGroup2"]) ? htmlspecialchars($SESSION["RadioGroup2"]):"" ) ; ?>"

And RadioGroup1="I order item1", RadioGroup2="I order item2".

This synthax is wrong, please help me out. Thanks.

[djjjozsi]

Hello again,

radio can use a checked="checked" long tag.

<input type="radio" name="RadioGroup" checked="checked" value="I order item1" />

but this program you need is difficult if you hardcode the conditions.

You should use a function to build a radio botton and watch a previously set value.

<?php
session_start();

$values[] = "I have select item1...";
$values[] = "I have select item2...";


function radiob( $label, $var, $values )
{
    foreach( $values AS $key => $value ) {
        if ( isset( $_SESSION["$var"] ) AND $_SESSION["$var"] == $key )
            $checked = "checked=\"checked\"";
        else
            $checked = "";
        ?>
<input type="radio" name="<?php echo $var;?>" id="<?php echo $var; ?>" value="<?php echo $key; ?>" <?php echo $checked; ?>/>
<?php echo $value; 
?> <br />
<?php
    }
}

radiob( "Items select" , "items" , $values );

?>

and if you get back to the form, this will re-select the radiobutton.

[paldo]

Thank you

I tried to complete the script, but successless.Here what I did?

<?php
session_start();
echo "<form name=\"aaaa\" method=\"post\"  action=\"order_select1.php\">";

$values[] = "I have select item1...";
$values[] = "I have select item2...";


function radiob( $label, $var, $values )
{
    foreach( $values AS $key => $value ) {
        if ( isset( $_SESSION["$var"] ) AND $_SESSION["$var"] == $key )
            $checked = "checked=\"checked\"";
        else
            $checked = "";
			?>

<input type="radio" name="<?php echo $var;?>" id="<?php echo $var; ?>" value="<?php echo $key; ?>" /> I order item1 <br/>
<input type="radio" name="<?php echo $var;?>" id="<?php echo $var; ?>" value="<?php echo $key; ?>" /> I order item2 <br/>

<input name="submit" type="submit" value="order">

What is wrong at this point?

Thanks

[paldo]

Sorry, I got it !

<?php
session_start();
echo "<form name=\"aaaa\" method=\"post\"  action=\"order_select.php\">";
$_SESSION["items"]=0;
$values[] = "I have select item1...";
$values[] = "I have select item2...";


function radiob( $label, $var, $values )
{
   foreach( $values AS $key => $value ) {
       if ( isset( $_SESSION["$var"] ) AND $_SESSION["$var"] == $key )
           $checked = "checked=\"checked\"";
       else
           $checked = "";
       ?><input type="radio" name="<?php echo $var;
       ?>" id="<?php echo $var;
       ?>" value="<?php echo $key;
       ?>" <?php echo $checked;
       ?>/>
<?php echo $value;

?> <br />
<?php
   }
}

radiob( "Items select" , "items" , $values );

?>
<input type="submit" name="submit" value="order" />

[paldo]

When I submit the form the selected value is not printed. Where is the faulty synthax?

<?php
session_start();



$_SESSION['value'] = $_POST['value'];

?>

<?php

$value = $_POST['value'];

print " <b>$value</b><br />";
?> 

<input type="submit" name="submit" style="background-color:#00CC66" value=" I confirm" onClick="location.href='confirm.php'">

<input type="submit" name="submit" style="background-color:#FF0000" value="  I change my order" onClick="location.href='order_form_select1.php'">

[djjjozsi]

in this function:
radiob( "Items select" , "items" , $values );

the items is the radio button's variable name => if you submit the form on the next page you will get $_POST["items"]

on the next page if you're waiting $_POST["value"] you need to rename when you call the radiob/B function.

maybe this helped 🙂
:offtopic:

hey, this is really new, and maybe helpful to learn how to save many-many properties to a table used a connector table.
http://phpcode.hu/teszt/checkbox_expert/

video tut is on the way

[paldo]

The form look like this

<?php
session_start();
echo "<form name=\"aaaa\" method=\"post\"  action=\"order_select.php\">";
$_SESSION["items"]=0;
$values[] = "I have select item1...";
$values[] = "I have select item2...";


function radiob( $label, $var, $values )
{
   foreach( $values AS $key => $value ) {
       if ( isset( $_SESSION["$var"] ) AND $_SESSION["$var"] == $key )
           $checked = "checked=\"checked\"";
       else
           $checked = "";
       ?><input type="radio" name="<?php echo $var;
       ?>" id="<?php echo $var;
       ?>" value="<?php echo $key;
       ?>" <?php echo $checked;
       ?>/>
<?php echo $value;

?> <br />
<?php
   }
}

radiob( "Items select" , "items" , $values );

?>
<input type="submit" name="submit" value="order" />

How does the script parse the two values to the following script?
Is it item0 and item1?

Thanks

[djjjozsi]

radiobuttons could only post one selected value.

and the variable name is $_POST["items"] on the next page.

[paldo]

I changed the response script to the following:

<?php
session_start();


$_SESSION['items'] = $_POST['items'];
$items= $_POST['items'];

?>

<?php


print " <b>$items</b>Thank you.<br />"; 
?> 

<input type="submit" name="submit" style="background-color:#00CC66" value=" I confirm" onClick="location.href='confirm.php'">

<input type="submit" name="submit" style="background-color:#FF0000" value="  I change my order" onClick="location.href='order_form_select1.php'">

Unfortunately I get the value 0 or 1 instead of"I have select item1..." and " I have select item2..." and when I go back it selects only 0

[djjjozsi]

You have left $_SESSION["items"]=0; in your code. that set 0 to the selected...
And $values[0] has a value..

you should set bigger index numbers, like:

$values[1] = "I have select item1...";
$values[2] = "I have select item2..."; 

[paldo]

So, how do I print out:
when value1 is selected: print out: I have select item1...
when value2 is selected print out: I have select item2...

<?php
session_start();
echo "<form name=\"aaaa\" method=\"post\"  action=\"order_select1.php\">";

$values[1] = "I have select item1...";
$values[2] = "I have select item2...";


function radiob( $label, $var, $values )
{
   foreach( $values AS $key => $value ) {
       if ( isset( $_SESSION["$var"] ) AND $_SESSION["$var"] == $key )
           $checked = "checked=\"checked\"";
       else
           $checked = "";
       ?><input type="radio" name="<?php echo $var;
       ?>" id="<?php echo $var;
       ?>" value="<?php echo $key;
       ?>" <?php echo $checked;
       ?>/>
<?php echo $value;

?> <br />
<?php
   }
}

radiob( "Items select" , "items" , $values );

?>
<input type="submit" name="submit" value="order" />

And:

<?php
session_start();


$_SESSION['items'] = $_POST['items'];
$items= $_POST['items'];

?>

<?php




print " <b>$items</b>Thank you.<br />"; 
?> 

<input type="submit" name="submit" style="background-color:#00CC66" value=" I confirm" onClick="location.href='confirm.php'">

<input type="submit" name="submit" style="background-color:#FF0000" value="  I change my order" onClick="location.href='order_form_select1.php'">

Thanks for your help. Paldo

[djjjozsi]

in confirm page:

$values[1] = "I have select item1...";
$values[2] = "I have select item2..."; 

echo $values[$_SESSION['items']];

[paldo]

Thank you very much. Everything understood and perfectly done. Paldo

[djjjozsi]

Your welcome.
Don't forget to set this thread as resolved.

jjozsi