PHP - Isset Not Reading Variable

Isn't this code redundant...

if (isset($_SESSION['loggedIn']) && $_SESSION['loggedIn'] == TRUE){


After all, if $SESSION['logged_in'] == TRUE then it is *obviously* set...


Debbie

Hello all, i am hoping someone can help me.

i have some code i have been working on and i am trying to add a 404 page if it cant find the page, i know it will be some sort of if statment, but with me been pretty much a noob at php i am stuck.

heres the code that the page calls.

Code: [Select]
function get_content() {

//Get page name from browser if none call it home
$page = (isset($_GET['page'])) ? $_GET['page'] : 'home';

//Get The Page Content
$sql = "SELECT * FROM content WHERE page = '$page'";
$res = mysql_query($sql) or die (mysql_error());
while($row = mysql_fetch_assoc($res)){

//Show The Page Content
echo '<h1>' . $row['title'] . '</h1>';
echo $row['body'];
}
}

thanks all.

Hi all

I need to do a multiple if isset to get three variables from the URL. Here is my code for just one:


if(isset($_GET['category'])) {
$fetchproducts = mysql_query(" SELECT * FROM `products` WHERE category = '".$_GET['category']."'");
while($returnedProduct = mysql_fetch_array($fetchproducts)) {
include('product-cell.php');
}

How do I combine this to check what is the 'type' and 'colour' from the URL and fetch from the SQL accordingly?

Many thanks for you help

Pete

guys this thing called isset() is bugging me.What is the difference in when you say
Code: [Select]
if(isset($_POST['name']))
and
Code: [Select]
if($_POST['name'])
and
Code: [Select]
if(!$_POST['name'])

and why would someone require a code such as Code: [Select]
if($_POST['submit']=='Submit')
And what is that code which tells you the user has entered something into the form
Thanks People

i Have two page login.php and verify.php

In login.php user is entering Username and Password and in the action of the form i am writing verify.php.

If verification is a success then i will start a session()

Code: [Select]
session_start();

$_SESSION['ls']="loggedin";   // ls stands for login status
$_SESSION['id']=$row['id'];
$_SESSION['user_name']=$row['user_name'];
$_SESSION['email']=$row['email'];
header('location : members.php');
die (" ");
and will redirect them to members.php
....

Everything is working fine...

But in login.php i have written a code on the top...

Code: [Select]
<?php
if(isset($_SESSION['ls']) && isset($_SESSION['id']) && isset($_SESSION['user_name']) && isset($_SESSION['email']) )
{
header('location:members.php');
die(" ");

}
?>
I want if a session is started and if user will access login.php they will automatically go to members.php

But this script is not working...

Iam not getting whats the problem...
also i m not getting any error login.php or anything


CODE WRITTEN ON THE TOP OF members.php IS :

Code: [Select]
<?php
session_start();
if(@$_SESSION['ls']!=="loggedin" ) // Checks if the person has done stage one (Registration.php)
{
   header('Location: login.php'); //If they haven't done it, it sends them back.
   die (" ");
}
?>

Hi there,

I'm inserting data into a mysql database.  My submissions works fine, however when a part of the form is not filled out the php scripit crashes.  How can I submit all data that is set and skip pieces that aren't filled out?

For example I have a plant database which has an option to insert different types of common names for the plant.  It's ok if they aren't all filled out.

My code is as follows: Code: [Select]
<?php  

//insert general plant data into db
$queryplant="INSERT INTO actualplanttable (id, scientific, common1, common2, common3, family, genus, description, planting, growing, care, duration, reference) 
VALUES ('NULL', '$_POST[scientific]', '$_POST[common1]', '$_POST[common2]', '$_POST[common3]', '$_POST[family]', '$_POST[genus]', '$_POST[description]', '$_POST[planting]', '$_POST[growing]', '$_POST[care]','$_POST[duration]','$_POST[reference]')";
mysql_query($queryplant) 
or die ('Error updating actualplanttable');

//insert maintenance data into db
$querymaintenance="INSERT INTO plantmaintenancelinktable (plant_id, maintenance_id)
VALUES ('$inserted_id', '$_POST[maintenance]')";
mysql_query($querymaintenance) 
or die ('Error updating plantdurationtable');

?>


Should I be trying to work an isset function into this code?   Any help would be greatly appreciated.

Thanks!

Bill...

I believe that my problem is with the isset on line 7 and 39, but I do not know of anyway around it. Can someone enlighten me.

<?php
session_start();
if (isset($_GET['logout'])){
    unset($_SESSION['logged_in']);
}
?>
<html>
    <head>
        <title>Add a New Car!</title>
        <?php
        if (isset($_POST['submit'])) {
            //print_r($_POST);
            $password = md5($_POST['password']);
            //echo'<p>'.$password.'</p>';
            $username = ($_POST['username']);
            //echo'<p>'.$username.'</p>';
        }
        $db = new PDO('sqlite:login.sqlite');
        $login = 'SELECT * FROM login
        WHERE userid="'.$username.'"
        AND password="'.$password.'";';
        //echo'<p>'.$login.'</p>';
        $attempt = $db->query($login);
        foreach ($attempt as $row) {
        //print_r($row);
        $_SESSION['logged_in'] = $username;
        }
        ?>
    </head>
    <body>
                <?php 
        if (!isset($_SESSION['logged_in'])){
        ?>
            <form method="post" action="Db_login.php">
            <p>Username:<br /><input type="text" name="username" /> </p>
            <p>Password:<br /><input type="password" name="password" /></p>
            <p><input type="submit" name="submit" value="Log In!" /></p>
            </form>
        <?php
        } else {
        ?>
        <?php
        if(isset($_POST['submit'])) {
            print_r($_POST);
            $make = ($_POST['make']);
            $model = ($_POST['model']);
            $year = ($_POST['year']);
            $fuel = ($_POST['fuel_type']);
            $vin = ($_POST['vin_number']);
            $reg = ($_POST['reg_number']);
        }
        $db = new PDO('sqlite:cars.sqlite');
        $sqlCars = 'INSERT INTO cars ( )
        VALUES("'.$make.'","'.$model.'","'.$year.'","'.$fuel.'","'.$vin.'","'.$reg.'");';
        echo'<p>'.$sqlCars.'</p.>';
        ?>
        <form method="post" action="Db_new_Cars.php" enctype="multipart/form-data">
            <p>Make:<br /><input type="text" name="make" /> </p>
            <p>Model:<br /><input type="text" name="model" /></p>
            <p>Year:<br /><input type="text" name="year" /></p>
            <p>Fuel Type:<br /><input type="text" name="fuel_type" /></p>
            <p>Vin Number:<br /><input type="text" name="vin_number" /></p>
            <p>Reg Number:<br /><input type="text" name="reg_number" /></p>
            <p>Choose a image to upload:<br />
            <input type="file" name="myfile"></input></p>
            <p><input type="submit" name="submit" value="Submit!" /></p>
        </form>
        <h1> Protected Content!</h1>
        <p>You are logged in as <em><?php echo $_SESSION['logged_in']; ?> </em></p>
        <p><a href="Db_login.php?logout=true">Log out!</a></p>
        <p><a href="New_Cars.php">Add a new car</a></p>
        <p><a href="Book_Out_Cars.php">Book out a car</a></p>
        <?php
        }
        ?>

    </body>
</html>

why dose this not work

<?php

if(isset($_SESSION['SESS_ADMIN']))
   $loc = ../admin/admin.php;
else
   $loc= ../head/head.php";

                     
?>
<form><INPUT TYPE="button" value="Main Menu" onClick="parent.location='<?php echo $loc; ?>'"></form>
</body>

</HTML>

This is blowing my mind. I have this function and all I want it to do is check to make sure that the var $race is set and = '0'. The default value from the form is '0'. I also want it to check the value of race and if it is anything but the two listed , submit error. Yes I've tried to replace the || with &&.. Nothing works(Meaning that it will error when its not suppose to or it wont error when its suppose to).. Any ideas?



Code: [Select]
function check_Race ($race,$display_name,$member_id,$description,$ip) {

//echo "This is the race". $race;
//exit;

if (isset($race) && $race ='0' && $race !== 'White' && $race !== 'Black'){

echo "This is an errror.!";
$t_error="19";
$member_id = $member_id;
notify_Admin($t_error,$member_id,$ip);
   // logOut ($t_error);
exit;

}

Hi guys, first time posting here.

Anyway, heres my problem.

I have this section of code at the beggining of my page:

Code: [Select]
if (isset($_POST['userChoice'])) {
  $try = check_word($_POST['userChoice']);
  echo ("We are into the loop");
}
else {
  echo ("<br/>about to call change word");
  changeword();
  echo ("<br/> we called the changeword");
}

And here is my form:
Code: [Select]
<html>
    <head>
    </head>
    <body>
        <form name="wordguess" action="Index.php" method="POST">
        <table>
            <tbody>
                <tr>
                Try to guess what the following word is: <?=$scrambled ?> <br/>
                </tr>
                 <tr>
                Your Guess: <input type="text" id="userChoice" size="20" /> <br/>
                </tr>
                <tr>
                <td>
                    <input type="submit" name="submit" id="submit" value="Submit">
                </td>
                </tr>
                <tr>
                   <?=$correct?>
                </tr>
            </tbody>   
        </table>
        </form>
    </body>
</html>'

Now, how i assumed it worked was that the first time the page is loaded it would display the form and that's it. However, even when they hit the submit button on the form, its not really doing the POST, so when the page reloads, gives me the same stuff so it always goes on the else part of the if.

Any help would be appreciated.

Thanks,
GoodVibe

I want to link this two file but not working,  first file to make drop down option form

Hi there,

I have just move hosts with our website and it loads the frontpage but non of the subsequent pages. The site works like this, depending on the variables in the address depends which page and which template are loaded into it. If the template is "ros" it loads rosettes template, if it is "tro" it loads trophy template, and then the name of the item, ie "hazel" will load up the hazel product page. All it is doing at the moment is loading the home.php page.

The code to do this is below:

<?

if (!isset($template)) {include ("static/home.php");} else if (isset($id)) {

if (!file_exists("site_templates/$template.php")) {
echo "OOPS! <P> The template you have requested does not exist!<BR><BR><BR><BR><BR><BR>";
}elseif (file_exists("site_templates/$template.php")) {
include ("site_templates/$template.php");
}
}
?>

It worked with our last host, but refuses to work now. Is there someone out there that can help.

Thanks in advance,
Phil

i know theres a way but i just forget. i want to do a switch function.

Code: [Select]
switch ($_GET['page']) {
    case 0:
        include 'page';
        break;
    case 1:
        include 'page1';
        break;
    case 2:
        include 'page2';
        break;
    default:
        include 'page';
}
?>
just like that but if there is no $_GET page i just want it to do the default. instead of doing if isset GET page do switch else default page. i just want it to be simpler by doing something like switch(isset$_GET etc.

Running into some problems with my code.  I am having the user search the Database with either a UAID or the user's full name.  It works fine when you input both the UAID and name; however, I want it to work if only one is give (i.e. just the name or just the UAID).

I decided to use the isset($_POST) function of php but I am not getting it to work correctly.  PHP believe it is set even though it is empty.

Here is my html form.

<?php
@include 'accesscontrol.php';

echo "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"
      \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">"
     ."<html xmlns=\"http://www.w3.org/1999/xhtml\">"
     ."<title> Hello </title>"
     ."<meta http-equiv=\"Content-Type\"
      content=\"text/html; charset=iso-8859-1\" />"
     ."<head>"
     ."<style type=\"text/css\">"
     ."h1{"
     ."border-bottom-style: double;"
     ."border-bottom-color: black;"
     ."border-bottom-width: 5px;"
     ."}"
     ."p{"
     ."background-color:#4682B4;"
     ."}"
     ."</style>"
     ."</head>"
     ."<body style=\"background-color:#B8B8B8\">"
     ."<table align=\"center\" style=\"background-color:#B8B8B8\" WIDTH=\"100%\" HEIGHT=\"100%\">"
     ."<tr valign=\"middle\">"
     ."<td align=\"center\">"
     ."<form method=\"post\" action=\"user.php\">"
     ."<table align=\"center\" cellpadding=\"10\" style=\"background-color:#5CADFF\" width=\"500\" height=\"400\">"
     ."<tr>"
     ."<th colspan=6 align=\"center\"><h1>Welcome: ".$uid."</h1></th>"
     ."</tr>"
     ."<tr>"
     ."<td colspan=3 width=40% align=center>"
     ."UAID:<br>  <input type=\"text\" size=\"8\" name=\"UAID\" /></td>"
     ."<td colspan=3 width=60% align=center>"
     ."Name (Last, First):<br><input type=\"text\" size=\"8\" name=\"last\"/>, <input type=\"text\" size=\"8\" name=\"first\" />"
     ."</tr>"
     ."<tr>"
     ."<td colspan=6 align=\"center\"><input type=\"submit\" value=\"submit\" />"
     ."</td>"
     ."</tr>"
     ."</tr>"
     ."</table>"
     ."<tr>"
     ."</tr>"
     ."</td>"
     ."</tr>"
     ."</table>"
     ."</body>"
     ."</html>";

?>



Here is the PHP:

<?php
@include 'accesscontrol.php';
//include 'common.php';
include 'db.php';

$fname = $_POST['first'];
$lname = $_POST['last'];

 
 $sql = "SELECT * FROM `user` WHERE UAID='$_POST[UAID]'";
 $result = mysql_query($sql);
 $rows = mysql_fetch_array($result);


if(isset($fname) && isset($lname))
{

echo "Post first $fname <br>"
     ."Post last $lname";
$firstname = $rows['firstname'];
$lastname = $rows['lastname'];

if($fname != $firstname OR  $lname != $lastname)
{
?>
<html>
<head>
<script language="JavaScript">
    alert(" Hello this is crap" ); 
    history.back(); 
 </script>";
</head>
</html>
<?
exit; 

}

else
{ 
 echo "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"
      \"URL\">"
     ."<html xmlns=URL>"
     ."<title> Hi </title>"
     ."<meta http-equiv=\"Content-Type\"
      content=\"text/html; charset=iso-8859-1\" />"
     ."<head>"
     ."<style type=\"text/css\">"
     ."h1{"
     ."border-bottom-style: double;"
     ."border-bottom-color: black;"
     ."border-bottom-width: 5px;"
     ."}"
     ."p{"
     ."background-color:#4682B4;"
     ."}"
     ."</style>"
     ."</head>"
     ."<body style=\"background-color:#B8B8B8\">"
     ."<table align=\"center\" style=\"background-color:#B8B8B8\" WIDTH=\"100%\" HEIGHT=\"100%\">"
     ."<tr valign=\"middle\">"
     ."<td align=\"center\">"
     ."<table align=\"center\" cellpadding=\"10\" style=\"background-color:#5CADFF\" width=\"600\" height=\"400\">"
     ."<tr>"
     ."<th colspan=6 align=\"center\"><h1>Welcome: ".$uid."</h1></th>"
     ."</tr>"
     ."<tr>"
     ."<form method=\"Post\" action=\"userview.php\">"
     ."<td colspan=3 width=40%>"
     ."UAID:  <input type=\"text\" size=\"8\" name=\"UAID\" value= ".$_POST['UAID']." /></td>"
     ."<td colspan=3 width=60%>"
     ."Name (LAST, FIRST):<input type=\"text\" size=\"8\" name=\"last\"  value= ".$_POST['last']." />,
      <input type=\"text\" size=\"8\" name=\"first\" value= ".$_POST['first']." />"
     ."</td>"
     ."</tr>"
     ."<tr>"
     ."<td colspan=3 width=40%>"
     ."Department:<input type=\"text\" size=\"8\" name=\"department\" value=" .$rows['BOG'].">"
     ."</td>"
     ."<td colspan=3 width=60%>"
     ."Employee ID:<input type=\"text\" size=\"8\" name=\"empID\" value=" .$rows['employeeID'].">"
     ."</td>"
     ."</tr>"
     ."<tr>"
     ."<td colspan=3 align=\"center\"><input type=\"submit\" value=\"View\">"
     ."</form>"
     ."</td>"
     ."<form method=\"Post\" action=\"homepage.php\">"
     ."<td colspan=3 align=\"center\"><input type=\"submit\" value=\"Back\">"
     ."</td>"
     ."</tr>"
     ."</tr>"
     ."</table>"
     ."<tr></tr></td></tr></table></body></html>";

}}
 mysql_free_result($result);
?>

Hi i am connecting to my database and i need the script to print something if the field is not empty, I am using the following, but its not working any ideas where i am going wrong?


if (isset($row[image_zero]))
{