hidden field variables are empty

rageh

I would be grateful if you could answer this.

I set some hidden variables in form and when I try to retrieve them in another script, they are empty. I tried field1 = $_GET['field1']; but that also returns empty string. How could I retrieve hidden variables in my scripts.

Thank you in advance

HalfaBee

If the 'method' attr. of the form is set to 'POST' you have to use $_POST['field'].

Otherwise what you are doing is correct.

HalfaBee

rageh

Mr Halfabee My form attribute is POST and I used $_POST['field1'] to fetch the hidden form variable. There is no success. It is still empty. May be I should also mention that I am using Windows2000 as the development tool if that tells something.

Anyone else have any suggestions?

Thanks

HalfaBee

Try adding this to see what is coming back.

echo "<PRE>";
print_r( $_POST );

HalfaBee ( I'm not Mr HalfaBee, thats my Father 🙂 )

rageh

I did that and add echo "<PRE>"; print_r( $_POST ); and I got this.
Array
(
)

That is an empty array.

HalfaBee

Maybe you had better post your HTML and maybe we can see what the problem is.
HalfaBee

DeltaRho2K

This:

field1 = $_GET['field1'];

Should be this:

$field1 = $_GET['field1'];

Then you can check it with:

echo $field1;

(Substitute POST for GET if you are actually doing a POST method)

If this doesn't get your variable, then you need to start looking at your form and verifying that the name of the hidden field matches your POST (or GET) value.

Also, you mentioned you are doing a POST. Change it to a GET temporarily. It can make it easier to see what is being passed when you can see it in the URL. Once you get things running OK, change it back to a POST and verify its operation.

rageh

I have $field1 = $POST['field1']; in my code and and the form attribute is method='post'.. It is beyond me to understand this. In my earler projects in Linux I never had to use $field1 = $POST['field1']; . Never. And It worked. I just used to have the form variables set and the next script can happily fetch the values. What have gone rotten in PHP scripting engine since my last work in PHP?????? Or is it only windows 2000 problem??.

I post the relevant code here

echo("<table border='1' width='45%' cellpadding='0' cellspacing='0'>\n");
echo("<form name='form1' method='get' action=''>");
echo("<tr bgcolor='#CCCCCC'>");
echo("<td><b>IDs: </b></td>");

echo("<td><b>Subjects: </b></td>");
echo("<td><b>Posted</b></td>");
echo("</tr>");
echo("<tr>");

  while ($row = mysql_fetch_array($res)) {
          $s_id = $row["s_id"];  
		  $s_name = $row["s_name"];
		  $t_stamp = $row["time"];
	echo("<input type='hidden' name='field1' value='$s_id'>");     
	echo("<td>".$s_id."</td>");                                                    
    echo("<td><a href='readnews.php?subject_id=$s_id'>$s_name<a/></td>"); 
	echo("<td>$t_stamp</td>");                                                  
    echo("</tr>");
}

echo("</form>");

echo("</table>");

Dr_Freak2

Maybe I ask a stupid question,but would you try to
echo $s_id; before trying to figure out the form.It can examine whether you get the value or not.I have quite similar experience in my previous exercise.

I hope it helps.🙂

rageh

Yes I the $s_id has value. I checked that. I am baffled by this problem. It seems to me that it is a bug in php with windows2000. I am not sure.

Thank you