PHP - Moved: Onchange="form1.submit(); Help Keeps Refreshing And Losing Data

Hi.  I have a page that allows users to upload some files, using <input type="file">...

What I would like is to be able to upload the file "onchange" of this input field using ajax so that (1) users can upload their second file while their first one is uploading, and (2) so that they can see their file on the page as soon as it's done uploading.  But I can't seem to find a way to populate the $_FIlLES array without actually submitting the form.

I've seen some stuff online where people use iframes to do this kind of thing, but I was hoping there was another way to do it.  Any help would be great.

Alright, I've spent over a week trying to fix this now - And Im getting frustrated! I asked at other forums, I asked co-workers and I asked friends-of-friends, and nobody can explain what happens. Let's take a look at this first:

$name = mysql_real_escape_string($_POST['name']);
mysql_query(sprintf("UPDATE em_users SET name='%s' WHERE id='" . $in_user['id'] . "'", $name));

This will insert NO data on the Name field in the database. Obviously, I thought the $_POST variable wasn't passed correctly, but echo'ing it just before the query WILL show data. And as I said, I tried everything possible for the last week. Switching variables, adding static text on the $name variable instead of using the $_POST content (this does work). I used very very simple test data on the form, such as my name "Mark" or "test" and "hey". The query is correctly executed everytime.

The truely WEIRD thing is, if I ensure there is content in $name before executing the query it will work as expected everytime. Like this:

$name = mysql_real_escape_string($_POST['name']);
$name && mysql_query(sprintf("UPDATE em_users SET name='%s' WHERE id='" . $in_user['id'] . "'", $name));

Of course I could do this, but I want to know why my code does or doesn't work + it's a lot of work to do for something that worked fine a week ago. It has spread to a lot of forms on my website that $_POST variables aren't processed correctly - and it happened out of nowhere. Even on codes that havnt changed in months.

I really need help on fixing this! This project has been in development for nearly two years, and without a fix it's pretty much lost

Hey there,

Pretty frustrated with this. It seems so simple, but I've been staring at it and toying with it for ages, so I figured I'd post here. I have a variable called "$isTaken" that seems to be losing its value in an essential step in my function. Take a look.

function subdomainTaken($inputtedSubdomain)
{
//Initialize $isTaken to 'true'
$isTaken = true;
echo "isTaken STARTS AS: <i>" . $isTaken . "</i><br />"; //FOR TESTING PURPOSES ONLY. VARIABLE HAS VALUE HERE

//Check subdomain in database
$subdomainDBQuery = mysql_query("SELECT * FROM `companies` WHERE company_subdomain = '$inputtedSubdomain'");
$foundResult = mysql_num_rows($subdomainDBQuery);

if ($foundResult > 0) {
$isTaken = true;
} else {
$isTaken = false;
}
return $isTaken;
}


By the time I get to the if statement, $isTaken has no value. I've echoed it to be sure. Any ideas?

Thanks,
Frank

Hey all,

I am having a situation where I have a singleton class with a static array in it.  I insert an element into that array, and then I redirect the user to another page.  At that page, I then retrieve that array (it's stored in the session vars), but the array is then empty when I retrieve it.  I can't figure out why.

Here are some pertinent code snippets.

First, the class with the static array:

class Logger
{

private static $instance = NULL;

private static $messages = array();

//Private constructor to prevent this class from being instantiated multiple times

private function __construct()

{

}

//The clone function is private to prevent cloning of this class

private function __clone()

{

}

//Returns the singleton instance of this class

public static function GetInstance()

{

if (!self::$instance)

{

self::$instance = new Logger;

}

return self::$instance;

}

public static function GetMessageCount()

{

return count(self::$messages);

}

public static function LogMessage($new_message)

{

self::$messages[] = $new_message;

}

public static function GetMessages()

{

return self::$messages;

}

public static function ClearMessages()

{

self::$messages = array();

}
}


Here is the code where I insert something into the aformentioned array (the process is that a user tries to log in, but the login fails, and so we insert a message into the array saying that the login credentials failed).


//Retrieve the message logging instance from the session data to be able to pass messages to the user.
$message_log = $_SESSION['user_messages'];
$user = $_SESSION['user_account'];

//Create a new instance of the database management class and
//try to connect to the database
$dbm = new DBM();
if ( !$dbm->isConnected() )
{

$message_log::LogMessage("We are sorry, but we are unable to access the database at this time.  Please try again later.");
}
else
{

//Retrieve the user login information

$useremail_dirty = $_POST['useremail'];

$password_dirty = $_POST['userpassword'];

//Check to see if the email we were given exists in the database, and if the password matches

$doesPasswordMatch = $dbm->doesPasswordMatch ( $useremail_dirty, $password_dirty );

if ( $doesPasswordMatch )

{

//Correct login information was received.  Login the user and redirect appropriately.

$user->Login();

header ( "Location: ".BASE_URL."/userpage.php" );

exit;

}

else

{

//If an incorrect email or password was given, report that information to the user.

$message_log::LogMessage("Incorrect login information.");

}
}

//The user has failed to login.  Redirect to the appropriate page.
header ( "Location: ".BASE_URL."/loginfailed.php" );


And finally, given an unsuccessful login attempt, this is where I pick back up the array of messages to display the messages to the user:

$message_log = $_SESSION['user_messages'];
$all_messages = $message_log::GetMessages();

print $message_log::GetMessageCount()."<br>";
print count($all_messages)."<br>";

foreach ($all_messages as $message_string)
{

$prepared_string = prepare_text_for_html_output($message_string);

echo $prepared_string."<br>";
}

$message_log::ClearMessages();


Unfortunately, the "all_messages" variable has nothing in it...it's like the messages that I logged in the previous PHP script never even existed.  I am calling session_start, so don't worry about that (even though it's not seen in these code snippets).  What could be going wrong?

I recently had a customer say that one of my forms isn't working. For some reason the ID number is getting lost when she submits the form.

The form code looks like:
...
print "<form method='post' name='form' action='update.php'>";
...
print "<input type='hidden' name='id' value=\"$id\" />";
print "<input type='submit' name='submit' value=\"Save Session\" />";
print "</form>";
...

And the PHP code that gets executed looks like:
...
//GET SESSION ID
if(isset($_GET['id'])) {  //ID from HTML link, before updates have been made
    $id = $_GET['id'];
} elseif(isset($_POST['id'])) {  //ID from form, after updates have been made
    $id = $_POST['id'];
} else {
    $id = '';
}

//IF SESSION ID IS VALID
if(preg_match("/^\d+$/", $id)) {
    ...
//ELSE, INVALID ID
} else {
    $msg = "<span class='errorText'>Session ID not found or invalid.</span>";
}
...

For some reason she usually gets the "Session ID not found..." error when submitting the form. Do you see any problems with the above code?


Note that she has been able to sucessfully use the form before (in the same day); we have nearly 1,800 records submitted using these forms; and I am unable to duplicate the issue. So I'm at a loss on what to do next.

Also, she talked with her IT person about the form. The IT person was able to submit data on his computer. So he reset her Internet options which seemed to fix the problem on her end temporarily. Note that she is using IE 7. She also said that she doesn't have access to any other browsers.

I'm tempted to chalk this up as a personal computer issue, but wanted to get your input first.

This topic has been moved to Linux.

http://www.phpfreaks.com/forums/index.php?topic=318175.0

Trying to create a simple login page (and my code is embarassingly disgraceful at this point).

In simple terms, I have start_session on three pages.

The first page asks for name, the second for password, the third welcomes user.

The second page contains

$name=$POST['name'];
$_SESSION['name']= $name;

When I access the page 2, the name is echoed with a greeting and request for password.

But after a password submission (whether correct or incorrect) the $name disappears.

I am at a loss for why it is not being refreshed or maintained in the session.

Any ideas for me?

This topic has been moved to PHP Installation & Configuration.

http://www.phpfreaks.com/forums/index.php?topic=347922.0

Stop posting non-PHP questions in the PHP Coding Help section.  We have many sub-forums, including both a JavaScript forum and one dedicated entirely to Ajax.

This topic has been moved to Ajax Help.

http://www.phpfreaks.com/forums/index.php?topic=327454.0

Hello All,   New Year Greetings!!   I have integrated a script for TODO list in my website. Its working fine, but adding New task will be appear only after refreshing the page, whereas delete and save are happening as and when i click on them. I dont know where can i make it right.   Here is my code   Display

<div class="w-box-content todo-list">
                               
                               <ul class="todoList">
		
        <?php
		
		require "todo.class.php";
$query = mysql_query("SELECT * FROM `tz_todo` ORDER BY `position` ASC");

$todos = array();

while($row = mysql_fetch_assoc($query)){
	$todos[] = new ToDo($row);
}
		foreach($todos as $item){
			echo $item;
		}
		
		?>

    </ul>

<a id="addButton" class="green-button" href="#">Add a ToDo</a>
<div id="dialog-confirm" title="Delete TODO Item?">Are you sure you want to delete this TODO item?</div>

I am including

<link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8.0/themes/humanity/jquery-ui.css" type="text/css" media="all" />
            <link rel="stylesheet" type="text/css" href="styles.css" />
<script type="text/javascript" src="script.js"></script>

 and in ajax.php

require "connect.php";
require "todo.class.php";


$id = (int)$_GET['id'];

try{

	switch($_GET['action'])
	{
		case 'delete':
			ToDo::delete($id);
			break;
			
		case 'rearrange':
			ToDo::rearrange($_GET['positions']);
			break;
			
		case 'edit':
			ToDo::edit($id,$_GET['text']);
			break;
			
		case 'new':
			ToDo::createNew($_GET['text']);
			break;
	}

}
catch(Exception $e){
//	echo $e->getMessage();
	die("0");
}

echo "1";

This topic has been moved to JavaScript Help.

http://www.phpfreaks.com/forums/index.php?topic=330523.0

This topic has been moved to Ajax Help.

http://www.phpfreaks.com/forums/index.php?topic=347117.0

This topic has been moved to JavaScript Help.

http://www.phpfreaks.com/forums/index.php?topic=320136.0

Hello.

I hope one of the PHP/HTML gurus here can help me. I have a web page that has been altered a bit to add some Google Analytics stuff and I've moved it to a 2nd directory. The original one works fine, the 2nd one won't post the form when I click the submit button.

1st URL https://www.theneutralizer.info/neutralizer
2nd URL: https://www.theneutralizer.info/neutralizer2

I have changed the action property to the correct script, and it does exist. But the problem is when clicking the button nothing happens.

Anyone have any ideas? I can send the PHP code if needed, but since it's HTML output, it should work the way it is displayed in the browser.

David

This topic has been moved to JavaScript Help.

http://www.phpfreaks.com/forums/index.php?topic=305968.0