PHP - Php Switch If Isset

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

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 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 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 (" ");
}
?>

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

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

I'm having a problem where when I click the "use" link it only displays my check message which is "Hey", but for some reason I have to click it again for my queries to work. Here's a pick: .

Here's the code:
Code: [Select]

<?php

if(isset($_SESSION['user'])){

include_once('connect.php');

$session = $_SESSION['user'];

echo "
<br/>
<div class='profile-general-stats'>
<table>

<th>Item Name</th><th>Description</th><th>Use/Sell</th>
";

$yo = "SELECT * FROM player_items WHERE Username = '$session' ORDER BY id ASC";
$check = mysql_query($yo) or die (mysql_error());
$num_of = mysql_num_rows($check);

if($num_of > 0){

while ($is = mysql_fetch_array($check)){

$item_id = $is['id'];
$item_name = $is['Name'];
$item_type = $is['Type'];
$item_value = $is['Value'];
$item_description = $is['Description'];
$item_sell_value = $is['Sell_Price'];

echo "

<tr>

<td align='left' style='padding: 5px; padding-left: 25px;'><strong>$item_name</strong></td>
<td align='left' style='padding: 5px;'>$item_description</td>
<td align='middle' style='padding: 5px;'><a href='?use&id=$item_id&name=$item_name&type=$item_type&value=$item_value'>Use</a>&nbsp;|&nbsp;<a href='#sell_$item_name' id='$item_id'>Sell</a></td>

</tr>

";

}
 
 }else{
 
 echo "
 <tr>
 
 <td align='left' style='padding: 5px; padding-left: 25px;'>No Items</td>
<td align='left' style='padding: 5px;'>No Items</td>
<td align='middle' style='padding: 5px;'>No Items</td>
 
 </tr>
 ";
 
 }
 
  echo "
 </table>
 </div>
 ";
 
 if(isset($_GET['use'])){
 
 echo "Hey";
 
 $use_id = $_GET['id'];
 $use_name = $_GET['name'];
 $use_type = $_GET['type'];
 $use_value = $_GET['value'];
 
 if($use_type == "Credits"){ $use_type = "Current_Credits"; }
 
 $check_item =  "SELECT id FROM player_items WHERE id = '".mysql_real_escape_string($use_id)."' AND Username = '".$_SESSION['user']."'";
 $run_check = mysql_query($check_item) or die(mysql_error());
 $num_check = mysql_num_rows($run_check);
 $e = mysql_fetch_array($run_check);
 
 $item_stat = "SELECT `".$use_type."` FROM stats WHERE Username = '".$_SESSION['user']."'";
 $run_stat = mysql_fetch_array(mysql_query($item_stat)) or die (mysql_error());
 
 $new_stat = $run_stat[''.$use_type.''];
 
 if($num_check == 1){
 
$new_stat = $new_stat + $use_value;

mysql_query("UPDATE stats SET `".$use_type."` = '".mysql_real_escape_string($new_stat)."' WHERE Username = '".mysql_real_escape_string($_SESSION['user'])."'") or die(mysql_error());
mysql_query("DELETE FROM player_items WHERE id = '$use_id'") or die(mysql_error());
 }else{
 }
 
 }else{
 }
 
}else{

header("Location: index.php");

}

?>

Code: [Select]
if (isset($_COOKIE['hide_div']['0']) && isset($_COOKIE['hide_div']['2'])){
$cookie1 = $_COOKIE['hide_div']['0'];
$cookie2 = $_COOKIE['hide_div']['2'];
}
if ($cookie1 == $cat_id OR $cookie2 == $cat_id) {
foreach ($this->forums as $forum_id => $forum_data)
            {
                if ($forum_data['category'] == $cat_id)
                {
                    //-----------------------------------
                    // We store the HTML in a temp var so
                    // we can make sure we have cats for
                    // this forum, or hidden forums with a
                    // cat will show the cat strip - we don't
                    // want that, no - we don't.
                    //-----------------------------------

                    $temp_html .= $this->process_forum($forum_id, $forum_data);
                }
            }

            if ($temp_html != "")
            {
                $this->output .= $this->html->CatHeader_Expandedhidden($cat_data);
                $this->output .= $this->html->end_this_cat();
            }

            unset($temp_html);
}else{
$cookie1 = '';
$cookie2 = '';
why in the world is it displaying Undefined variable: cookie1  and cookie2 as errors?

When I declared both of them even AFTER my if statement,

this is bogus dude, lol

this isset stuff is really confusing or am i just not doing it right?

In my index.php I use a global $_GET variable he

Code: [Select]
$ibforums->input      = $std->parse_incoming();
parse_incoming function is:


Code: [Select]
function parse_incoming()
    {
        global $HTTP_GET_VARS, $HTTP_POST_VARS, $HTTP_CLIENT_IP, $REQUEST_METHOD, $REMOTE_ADDR, $HTTP_PROXY_USER, $HTTP_X_FORWARDED_FOR;
        $return = array();


        if( is_array($HTTP_GET_VARS) )
        {
            while( list($k, $v) = each($HTTP_GET_VARS) )
            {
//-- mod_sec_update_131 begin
                if (strpos($k, "amp;") === 0)
                    $k = substr($k, 4);
//-- mod_sec_update_131 end

                if ( $k == 'INFO' )
                {
                    continue;
                }

                if( is_array($HTTP_GET_VARS[$k]) )
                {
                    while( list($k2, $v2) = each($HTTP_GET_VARS[$k]) )
                    {
                        $return[$k][ $this->clean_key($k2) ] = $this->clean_value($v2);
                    }
                }
                else
                {
                    $return[$k] = $this->clean_value($v);
                }
            }
        }

        // Overwrite GET data with post data

        if( is_array($HTTP_POST_VARS) )
        {
            while( list($k, $v) = each($HTTP_POST_VARS) )
            {
                if ( is_array($HTTP_POST_VARS[$k]) )
                {
                    while( list($k2, $v2) = each($HTTP_POST_VARS[$k]) )
                    {
                        $return[$k][ $this->clean_key($k2) ] = $this->clean_value($v2);
                    }
                }
                else
                {
                    $return[$k] = $this->clean_value($v);
                }
            }
        }

        //----------------------------------------
        // Sort out the accessing IP
        // (Thanks to Cosmos and schickb)
        //----------------------------------------

        $addrs = array();

        foreach( array_reverse( explode( ',', $HTTP_X_FORWARDED_FOR ) ) as $x_f )
        {
            $x_f = trim($x_f);

            if ( preg_match( '/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}$/', $x_f ) )
            {
                $addrs[] = $x_f;
            }
        }

        $addrs[] = $_SERVER['REMOTE_ADDR'];
        $addrs[] = $HTTP_PROXY_USER;
        $addrs[] = $REMOTE_ADDR;

        //header("Content-type: text/plain"); print_r($addrs); print $_SERVER['HTTP_X_FORWARDED_FOR']; exit();

        $return['IP_ADDRESS'] = $this->select_var( $addrs );

        // Make sure we take a valid IP address

        $return['IP_ADDRESS'] = preg_replace( "/^([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})\.([0-9]{1,3})/", "\\1.\\2.\\3.\\4", $return['IP_ADDRESS'] );

        $return['request_method'] = ( $_SERVER['REQUEST_METHOD'] != "" ) ? strtolower($_SERVER['REQUEST_METHOD']) : strtolower($REQUEST_METHOD);

        return $return;
    }
Now, I use my $ibforums->input throughout my forum system, and I use it in EVERY SINGLE file, I have around 50 Files and I get "unidetified variable" errors.

is there a way I can just make sure my global $ibforums->input is ISSET so it it's a GLOBAL ISSET? So I don't have to go through each file that uses $ibforums->input and put a isset( ) around it? It would take over prob 10 days to go through each file and change all 300-500 errors, using the $ibforums->input, there has to be a way I can globally defined my $ibforums->input Variable with a isset..

Thank you

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);
?>

Im trying to use an if isset to stop my error messages displaying before they submit the form it worked on another part of my website but wont work for this, It just wond submit the form at all when i click submit here is the code:
<html>
<head>
</head>
<body>
<form action="contact.php" method="post">
<fieldset>
<legend>Contact Us</legend>
Your Email:*<br>
<input type="text" name="email"><br>
Subject:*<br>
<select name="subject">
<option value=""></option>
<option value="1">Recruitment</option>
<option value="2">Absense</option>
<option value="3">Enquiry</option>
</select>
<br>
Message:*<br>
<textarea name="message" cols="50" rows="5"></textarea><br>
        <?php           require_once('recaptchalib.php');
           $publickey = "6LeB8LwSAAAAAKwvC3HWJNwWw9vYiSEkvFEvDduD"; // you got this from the signup page
           echo recaptcha_get_html($publickey);
         ?> <br>
<input type="submit" value="Send Email">


</form>
Required fields are marked with a *<br><br>
<?php
if(isset($_POST['Submit'])){
$email = $_POST['email'];
$subject = $_POST['subject'];
$message = $_POST['message'];
$to = "nathan_k_boothby_1994@hotmail.co.uk";

//checcking that all relevent information is entered and correct
if(!$message || !$email)
{
$errmessage ="Please fill in all required data.";
}
require_once('recaptchalib.php');
$privatekey = "6LeB8LwSAAAAAA_0IIEnAxL5uOau0TBm83Iog7Ey";
$resp = recaptcha_check_answer ($privatekey, $_SERVER["REMOTE_ADDR"], $_POST["recaptcha_challenge_field"], $_POST["recaptcha_response_field"]);
    
if (!$resp->is_valid) 
{
$errmessage ="The text you wrote did not match the image.";  
}
//Sending the email if nothing is wrong
if(!$errmessage)
{
header("location:send.php?to=".$to."&subject=".$subject."&email=".$email."&message=".$message."");
}else{
echo $errmessage;
}
}
?>
</fieldset>

<br><br><br>
</body>
</html>

And here is a link to the page:
http://valiantflight.comlu.com/emailer/contact.php

Any help will be greatly appriciated,

Thanks,

Blink359

Hi, just began working with the isset function, and having a few problems with the following code.

As you can see I'm trying to assign some variables using the explode function.

This is the string that is taken from the form on my index page
http://mobsters-fb-apache-dynamic-lb.playdom.com/mob_fb/refresh_stat_manual?user_id=100000898907997&auth_key=e5f4a2308d13346b4bf6e8228e9f50636240bf9f&nocache=1290001265332&


$RawHeader = str_replace(' ', '', $_POST['RawHeader']);

if (isset($RawHeader))
   {
   $UserID = explode('user_id=', $RawHeader);
   $UserID = explode('&', $UserID[1]);
   $UserID = $UserID[0];
   
   $AuthKey = explode('auth_key=', $RawHeader);
   $AuthKey = explode('&nocache=', $AuthKey[1]);
   $AuthKey = $AuthKey[0];
   }

I am new to the isset function so I don't really know if there is anything wrong with it, but if I try echo out both $UserID and $AuthKey it returns nothing.
Any suggestions or solutions?
Thanks

The below should be making it so that in order for "customer reviews" to be visible, you should need the "&review" in the url, but it's coming up regardless if it's in the URL  or not.

http://ghosthuntersportal.com/store.php?product=2

Code: [Select]
elseif(isset($_GET['product'])){
$product_id=$_GET['product'];
$sql500="SELECT * FROM $tbl_name3 WHERE product_id='$product_id'";
$result500=mysql_query($sql500);
$num_rows500=mysql_num_rows($result500);
if($num_rows500==0){
$average_rating=0;
}
else{
while($row500=mysql_fetch_array($result500)){
extract($row500);
$total = $total + $review_product_rating;

$review.='
<div class="review_container">
<div>'.$review_product_rating.' '.$review_title.'</div>
<div>By '.$review_name.' from '.$review_location.' on '.$review_date.'</div>
<div>Pros: </div><div>'.$review_pros.'</div>
<div>Cons: </div><div>'.$review_cons.'</div>
<div>Describe Yourself: </div><div>'.$review_describe.'</div>
<div>Best Use: </div><div>'.$review_best_use.'</div>
<div>'.$review_text.'</div>
</div>
';

}
$review_product_rating_total=$total;
$average_rating=$review_product_rating_total/$num_rows500;
}

$sql50="SELECT * FROM $tbl_name WHERE product_id='$product_id'";
$result50=mysql_query($sql50);
while($row50=mysql_fetch_array($result50)){
extract($row50);
$section=ucwords($product_category);
$product_name=ucwords($product_name);
$crumbs='<a href="./index.php">Home</a> <span class="eleven">></span> <a href="./store.php?cat='.$product_category.'">'.$section.'</a>
<span class="eleven">></span> <a href="./store.php?product='.$product_id.'">'.$product_name.'</a>';
$section=" - ".$section;
$product_highlights=str_replace("[","<li>", $product_highlights);
$product_highlights=str_replace("]","</li>", $product_highlights);
$content.='
<div class="product_wrapper">
<div>'.$product_name.'</div>
<div class="product_image">
<div><img src="'.$product_image.'" alt="'.$product_name.'" /></div>
</div>
<div class="product_details">
<div class="product_price">Price: $'.$product_price.'</div>
<div class="product_code">GHP#: '.$product_code.'</div>
<div class="rating_image">';
if($num_rows500==0){ $content.='No Rating'; }
else{ $content.='<img src="'.$average_rating.'.png" alt="'.$average_rating.'" />'; }
$content.=' <span class="twelve">('.$num_rows500.' Reviews)</span></div><div>';

if(isset($product_highlights)){
$content.='<div class="product_highlights_text">Product Highlights</div><div class="product_highlights_item"><ul>'.$product_highlights.'</ul></div>';
}
else{
}
$content.='</div>
</div>
</div>
';
}
$content.='<div class="product_links_headers">Overview | Specifications | Customer Reviews</div>';
if(isset($review)){
$content.='<div style="margin-top: 400px;">'.$review.'</div>';
}
elseif(isset($specifications)){
$content.='<div style="margin-top: 400px;">'.$product_specifications.'</div>';
}
else{
}
}

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]))
{