How to set value to a hidden text

hongmei

Hi,

I have the following questions:

How to set value to a hidden text in php code

I did this:

$_POST['hidvalue'].setvalue("1");

it didnot work.

I want to achieve the following:

If user correctly entered user and password and hit the logon button, then set value=1 to my hidden item ( so I can write a javascript to get the hidden value and do something) or directly go to another php page. Otherwise, give message and stay on old page.

Please help!

kevinsequeira

on form.php

<?php
if(!isSet($hidvalue)){
$hidvalue = 0;
}
?>
<form name="this_form" action=form_action.php>
<input type=hidden name=hidvar value=<?= $hidvalue?>>
<input type=text name=name>
<input type=text name=pwd>
<input type=submit>
</form>

on form_action.php

// do validation

// if user and pwd match

header("location:form.php?hidvalue=1");

// if wrong header("location:form.php?hidvalue=0");

reg
kevin

hongmei

Here is my code
why my javascript wouldnot do anything

When user and password matches, I give $hidme=1. otherwise give $hidme=0;

Then in my function (javascript)
I get document.logonform.hidvalue.value,
check it
if the value=1 then action="a.php"
else
action="b.php"

what is the problem?

Thanks

<html>

<?php

if (isset($POST["logon"]))
{
$errors = array();
$password= $POST['txtpassword'];
echo "password filled in is".$password;

$username= $_POST['txtusername'];
echo "user name is ".$username;
echo "logon has been submitted";

if ($username=="") {

    $errors[] = 'Please enter user name';

}

if ($password=="") {
$errors[] = 'Please enter your password ';
}
else{

$db = mysql_connect("myserver","user","password");
mysql_select_db("TES3devo",$db);
 // get username and password and check the password is correct or not

$sql =" select password from TES_USERS where user_name='$username'";

   $result = mysql_query($sql,$db);
$userdata = mysql_fetch_array ($result, MYSQL_ASSOC);

//echo "password in database is ".$userdata['password'];

if ($userdata['password']!="" && (trim($password)==trim($userdata['password']))) 
{

$hidme = 1;

 //logonform.submit();

echo " you get right".$hidme;
//go to the entry screen

// include "submitdata1a.php";
}

else{

	$errors[] ='Please check your password and try again';
   }

}

if (count($errors) == 0) {
$hidme = 1;

//include "screen.htm";

//echo " you are logged on";

}
else {

$hidme = 0;

    //echo 'Sorry, you have not filled the required fields<br>';
    foreach ($errors as $error) {
        echo $error . '<br>';
    }

}

//else{

?>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
</head>
<SCRIPT LANGUAGE="JavaScript">
<!--

function displayme()

{
//document.write([document.logonform.hidvalue].value);

if (document.logonform.hidvalue.value=="1"){
alert(" you are welcome");
document.logonform.action="submitdata1a.php";
//logonform.submit();

}
else{
document.logonform.action="logon.php";
}
}
-->
</SCRIPT>
<body bgcolor="#6699CC" text="#000000">
<table border=0 cellspacing=0 cellpadding=0 align="center" width="337" >
<form method="post" name="logonform">

<tr> 
  <td colspan="4"> 
    <div align="center">
      <p><b><font face="Arial, Helvetica, sans-serif">Welcome to CCR Data 
        Entry System</font></b></p>
      <p>&nbsp;</p>
    </div>
  </td>
</tr>
<tr> 
  <td colspan="4"> 
    <p><i><font color="#FF80C0"><b>Please log on</b></font></i></p>
    <p>&nbsp;</p>
  </td>
</tr>
<tr> 
  <td colspan="1" width="160" ><b>User Name: </b></td>
  <td colspan="3" width="232"> 
    <input type="text" name="txtusername">
  </td>
</tr>
<tr> 
  <td colspan="1" width="160"><b>Password:</b></td>
  <td colspan="1" width="232"> 
    <input type="password" name="txtpassword" size="30"> <input type="hidden"

name="hidvalue" value="<?php $hidme ?>" size="30">
</td>
</tr>

<tr> 
  <td colspan="4">&nbsp; </td>
</tr>


<tr> 
  <td colspan="4">&nbsp; </td>
</tr>

<tr> 
  <td colspan="4"> 
    <div align="center">
      <input type="Submit" name="logon" value="Log on" onclick="displayme()">
      <input type="reset" name="reset" value="Reset">

    </div>
  </td>
</tr>

</form>
</table>
</body>
<?php
//}
?>
</html>