How do i put a link in a table - javascript

I have a table on my website, which gets data from a database, in the table I have delete buttons on a row, I have just made the table searchable with jQuery, but now I can't figure out how to keep the delete buttons.
index.php:
<!DOCTYPE html>
<html lang="en">
<head>
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta charset="utf-8">
<meta name="description" content="Inventar">
<meta name="author" content="Martin Eide Bjørndal">
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css">
<link rel="stylesheet" href="/src/css/style.css">
<!-- jQuery library -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<!-- Popper JS -->
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
<!-- Latest compiled JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js"></script>
</head>
<body>
<button class="back" onclick="window.location='../'">
<img src="/src/icons/back.png">
</button> <!-- Tilbake knapp -->
<button class="ny_inventar" onclick="window.location='/admin/brukere/ny'">
<img src="/src/icons/add.png">
</button> <!-- Ny Bruker knapp -->
<div class="container-fluid" id="utskjekkcontainer">
<div class="row justify-content-center">
<div class="col-mv-10 bg-light mt-5 rounded p-3">
<h1 class="text-primary p-2">Brukere</h1>
<hr>
<div class="form-inline">
<label for="search" class="font-weight-bold lead text-dark">Søk</label>
<input type="text" name="search" id="search_text" class="form-control form-control-lg rounded-0 border-primary" placeholder="Søk...">
</div>
<hr>
<?php
include "../../src/fn/init.php";
$stmt=$conn->prepare("SELECT * FROM brukere");
$stmt->execute();
$result=$stmt->get_result();
?>
<table class="table table-hover table-light table-striped" id="table_data">
<thead>
<tr>
<th>#</th>
<th>Fornavn</th>
<th>Etternavn</th>
<th>Utskjekket</th>
<th>Admin</th>
<th>Slett</th>
</tr>
</thead>
<tbody>
<?php while($row=$result->fetch_assoc()){ ?>
<tr>
<td><?php echo $row["id"]; ?></td>
<td><?php echo $row["fornavn"]; ?></td>
<td><?php echo $row["etternavn"]; ?></td>
<td><?php echo $row["utskjekket"]; ?></td>
<td><?php echo $row["is_admin"]; ?></td>
<td>Slett</td>
</tr>
<?php }
$conn->close();
?>
</tbody>
</table>
</div>
</div>
</div>
<script type="text/javascript">
$(document).ready(function(){
$('#search_text').keyup(function(){
var search = $(this).val();
$.ajax({
url:'action.php',
method:'post',
data:{query:search},
success:function(response){
$('#table_data').html(response);
}
});
});
});
</script>
</body>
</html>
action.php:
<?php
include "../../src/fn/init.php";
$output = "";
if(isset($_POST["query"])){
$search = $_POST["query"];
$stmt = $conn->prepare("SELECT * FROM brukere WHERE fornavn LIKE CONCAT('%',?,'%') OR etternavn LIKE CONCAT('%',?,'%') OR id LIKE CONCAT('%',?,'%')");
$stmt->bind_param("sss",$search, $search, $search);
} else {
$stmt=$conn->prepare("SELECT * FROM brukere");
};
$stmt->execute();
$result=$stmt->get_result();
if($result->num_rows>0){
$output = "<thead>
<tr>
<th>#</th>
<th>Fornavn</th>
<th>Etternavn</th>
<th>Utskjekket</th>
<th>Admin</th>
<th>Slett</th>
</tr>
</thead>
<tbody>";
while($row=$result->fetch_assoc()){
$output .= "
<tr>
<td>".$row["id"]."</td>
<td>".$row["fornavn"]."</td>
<td>".$row["etternavn"]."</td>
<td>".$row["utskjekket"]."</td>
<td>".$row["is_admin"]."</td>
<td>".Slett."</td>
</tr>";
};
$output .= "</tbody>";
echo $output;
} else {
echo "<h3>No match found!</h3>";
};
?>
This is the search script, the problem is in the while loop where the link is added, I can't figure out how to make it work.

The a tag is not added as a plain-text to the output string, you need to rewrite that line, concatenate strings parts to variables parts correctly.
Try replacing:
$output .= "
<tr>
<td>".$row["id"]."</td>
<td>".$row["fornavn"]."</td>
<td>".$row["etternavn"]."</td>
<td>".$row["utskjekket"]."</td>
<td>".$row["is_admin"]."</td>
<td>".Slett."</td>
</tr>";
with:
$output .= "
<tr>
<td>".$row["id"]."</td>
<td>".$row["fornavn"]."</td>
<td>".$row["etternavn"]."</td>
<td>".$row["utskjekket"]."</td>
<td>".$row["is_admin"]."</td>
<td><a href='delete.php?id=".urlencode($row['id'])."' onclick='return confirm('Er du sikker?');'>Slett</a></td>
</tr>";

To allow PHP to echo the id from the table result you need to just simply do a php echo
Slett
You don't have to url encode at this stage as you are just simply building the href of an a:link

You can use it
<?php
include "../../src/fn/init.php";
$output = "";
if(isset($_POST["query"])){
$search = $_POST["query"];
$stmt = $conn->prepare("SELECT * FROM brukere WHERE fornavn LIKE CONCAT('%',?,'%') OR etternavn LIKE CONCAT('%',?,'%') OR id LIKE CONCAT('%',?,'%')");
$stmt->bind_param("sss",$search, $search, $search);
} else {
$stmt=$conn->prepare("SELECT * FROM brukere");
};
$stmt->execute();
$result=$stmt->get_result();
if($result->num_rows>0){
$output = "<thead>
<tr>
<th>#</th>
<th>Fornavn</th>
<th>Etternavn</th>
<th>Utskjekket</th>
<th>Admin</th>
<th>Slett</th>
</tr>
</thead>
<tbody>";
while($row=$result->fetch_assoc()){
$output .= "
<tr>
<td>".$row["id"]."</td>
<td>".$row["fornavn"]."</td>
<td>".$row["etternavn"]."</td>
<td>".$row["utskjekket"]."</td>
<td>".$row["is_admin"]."</td>
<td>Slett </td>
</tr>";
};
$output .= "</tbody>";
echo $output;
} else {
echo "<h3>No match found!</h3>";
};

Related

How to get parts of title as links to file in new page

This is how I make a table of the files in a directory, they will be pdf or images, my first goal is to get just a part of title (which will be separated as I like lets say number_nam_company_color.pdf) and I have to take those informations to a table as links, when clicked they open in a window like with a button, and I'm not sure if I'm getting those files the right way.
<!DOCTYPE html>
<html>
<head>
<title>Aceuil</title>
<link href="https://fonts.googleapis.com/css?family=Lato:100" rel="stylesheet" type="text/css">
<link href="{{asset('css/style.css')}}" rel="stylesheet">
<script type="text/javascript" src="{{ URL::asset('js/jquery.js') }}"></script>
<meta name="viewport" content="width=device-width, initial-scale=1">
</head>
<body>
<div >
<div >
<table class="grey">
<tbody>
<tr>
<th>number</th>
<th>nam</th>
<th>company</th>
<th>color</th>
<th>date</th>
</tr>
<tr>
<?php
$dirname = 'myfiles';
$dir = opendir($dirname);
while($file = readdir($dir)) {
if($file != '.' && $file != '..' && !is_dir($dirname.$file)) {
?>
<td>
<?php
echo ''.$file.'';
?>
</td>
<td>
<?php
echo ''.$file.'';
?>
</td>
<td>
<?php
echo ''.$file.'';
?>
</td>
<td>
<?php
echo ''.$file.'';
?>
</td>
<td>
<?php
echo "filectime($dirname . '/' . $file))";
?>
</td>
</tr>
<?php
}
}
closedir($dir);
?>
</div>
</div>
</body>
</html>
t worked with this :
$data = "$file";
list($numero,$nom,$marque,$couleur) = explode("_", $data);
echo ''.$numero.'';//in the same way i can get anything i want from the title
echo ''.$nom.'';
and i want to open that pdf file in a window not with chrome?

Uncaught syntaxerror unexpected token }

I have this code:
<?php
session_start();?>
<!DOCTYPE html>
<html>
<head>
<title>Narcis Bet</title>
<meta charset="utf-8">
<link rel="stylesheet" href="css/style.css" type="text/css">
<script type="text/javascript" src="js/script.js"></script>
</head>
<body>
<header>
<div id="top">
<img src="images/logo.png" width="400" height="140" alt="logo"/>
<?php
if(!isset($_SESSION['utilizator']))
{
?>
<div id="topright">
<form action="api/login.php" method="POST" id="toprightt">
<input type="text" name="username"/>
<input type="password" name="password"/>
<input type="submit" value="Login"/>
</form>
</div>
<img src="images/facebook.png" alt="facebook"/>
Contact
Termeni și condiții
</div>
</header>
<?php
if(isset($_SESSION['eroare']))
{
echo $_SESSION['eroare'];
unset($_SESSION['eroare']);
}
}
else
{
echo "<h1 id="."topright".">Bun venit,".$_SESSION['utilizator']."</h1>";
?>
<form action="api/logout.php" id="toprightl">
<input type="submit" value="Logout"/>
</form>
<nav class="nav">
<ul>
<li>Pariuri</li>
<li>Loto</li>
<li>Despre</li>
<li>Regulament</li>
</ul>
</nav>
<section class="main">
<table class="tableright" id="talon">
<tr>
<th>Cod</th>
<th>Eveniment</th>
<th>Data</th>
<th>Cota</th>
</tr>
</table>
<table class="table1" >
<thead>
<tr><th colspan="6" class="th1">FOTBAL</th></tr>
<tr>
<th>Cod.</th>
<th>Eveniment</th>
<th>data</th>
<th >1</th>
<th >X</th>
<th >2</th>
</tr>
</thead>
<?php
$handle = #fopen("../res/fotbal.txt", "r");
if ($handle)
{
while (($buffer = fgets($handle, 4096)) !== false)
{
$pariu=json_decode($buffer,true);
echo "<tr>";
echo "<td id='cod'>".$pariu["id"]."</td>";
echo "<td id='ev'>".$pariu['eveniment']."</td>";
echo "<td id='data'>".$pariu['data']."</td>";
echo "<td class='td1' onclick='FUNCTIE(".$pariu["id"].",\"".$pariu["eveniment"]."\",\"".$pariu["data"]."\",'1')>".$pariu['1']."</td>";
echo "<td class='td1' onclick='FUNCTIE(".$pariu["id"].",\"".$pariu["eveniment"]."\",\"".$pariu["data"]."\",'X')>".$pariu['X']."</td>";
echo "<td class='td1' onclick='FUNCTIE(".$pariu["id"].",\"".$pariu["eveniment"]."\",\"".$pariu["data"]."\",'2')>".$pariu['2']."</td>";
/*echo "<td class='td1'><button onclick='FUNCTIE(".$pariu["id"].",\"".$pariu["eveniment"]."\",\"".$pariu["data"]."\",'1')".$pariu['1']."</button></td>";
echo "<td class='td1'><button onclick='FUNCTIE(".$pariu["id"].",\"".$pariu["eveniment"]."\",\"".$pariu["data"]."\",'X')".$pariu['1']."</button></td>";
echo "<td class='td1'><button onclick='FUNCTIE(".$pariu["id"].",\"".$pariu["eveniment"]."\",\"".$pariu["data"]."\",'2')".$pariu['1']."</button></td>";
*/
echo "</tr>";
}
if (!feof($handle))
{
echo "Error: unexpected fgets() fail\n";
}
fclose($handle);
}
} ?>
</table>
</section>
</body>
</html>
and the function in javascript:
function FUNCTIE(id,eveniment,data,tip_pariu)
{
var table=document.getElementById('talon');
if(table)
{
table.innerHTML+="<tr><td>"+id+"</td><td>"+eveniment+"</td><td>"+data+"</td><td>"+tip_pariu+"</td><tr>";
}
}
and i get this error(uncaught syntaxerror unexpected token }) when i press on the td with onlick function.Please help me !I dont know why i get this error!.......................................................................................................................................................................................................................................................................................................................................................
unless they are all numbers, keywords, functions, or variable names, you should wrap your calls in quotes. so code becomes... also there is a ' left out.
... ... ...
echo "<td class='td1' onclick='FUNCTIE(\"".$pariu["id"]."\",\"".$pariu["eveniment"]."\",\"".$pariu["data"]."\",1)'>".$pariu["1"]."</td>";
... ... ...
maybe that will work

Increment value in database on generated button click

What I want to be able to do:
I have a page setup so that a table is populated with values from the database. I also generate a button for each of the rows on the table. The button is connected to the database to a field called status. It is initially at 0. When the button is clicked, I want to be able to update this value by incrementing it by 1.So after the button is clicked on the webpage, the database status value is incremented by 1.
I have tried using AJAX for this, but I havent seemed to have much luck.
view.php (Where the table is populated from the database)
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>View</title>
<link rel="stylesheet" type="text/css" href="css/style.css">
<link rel="stylesheet" type="text/css" href="css/bootstrap.css">
</head>
<body>
<?php
include 'php/connect.php';
include 'php/status.php';
function getStatus($num){
$status = "";
switch ($num) {
case ($num == 0):
$status = "Pending";
case ($num == 1):
$status = "Completed";
default:
$status = "Pending";
}
return $status;
}
?>
<div class="container">
<div class="row">
<div class="col-md-12 center-block">
<h1>View the Commissions</h1>
<div class="panel panel-default">
<div class="panel-heading">Commissions</div>
<div class="panel-body">
<p></p>
</div>
<table class="table">
<thead>
<tr>
<th>#</th>
<th>Alias</th>
<th>Description</th>
<th>Price</th>
<th>Status</th>
</tr>
</thead>
<tbody>
<?php
$query = mysqli_query($connect, "SELECT * FROM orders") or die(mysql_error());
while ($row = mysqli_fetch_array($query)) {
echo "<tr>";
echo "<th scope=\"row\">";
echo $row['orderID'];
echo "</th>";
echo "<th>".$row['alias']."</th>";
echo "<th>".$row['description']."</th>";
echo "<th>$".$row['price']."</th>";
echo "<th><button type=\"button\" class=\"btn btn-default btn-info\" name=\"" .$row['orderID']. "\">".getStatus($row['status'])."</button></th>";
echo "</tr>";
}
?>
</tbody>
</table>
</div>
</div>
</div>
</div>
</body>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script type="text/javascript">
</script>
</html>
As you can see, for each row in the database the table is populated. Here is an image of the webpage:
I did have this code for the AJAX. It did give me the correct output in the console of the browser, but I wasnt able to get this value into the process.php page
$.ajax({
url: 'php/process.php',
type: 'POST',
data: {
orderID: obj.id
},
success: function (data) {
console.log(data);
}
});
How would I have it so that as soon as the button is clicked, it updates the value and refreshes the page. Any help would be greatly appreciated
TLDR; When I click the "Pending" button, a value in the database is incremented by 1.
Your getStatus() function didn't have break statement. for simple POST use $.post. I have added .status class to your button to use it as selector with jQuery
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>View</title>
<link rel="stylesheet" type="text/css" href="css/style.css">
<link rel="stylesheet" type="text/css" href="css/bootstrap.css">
</head>
<body>
<?php
include 'php/connect.php';
include 'php/status.php';
// fixed this function by adding break and removing $num from case statement
function getStatus($num)
{
$status = "";
switch ($num) {
case 0:
$status = "Pending";
break;
case 1:
$status = "Completed";
break;
default:
$status = "Pending";
}
return $status;
}
?>
<div class="container">
<div class="row">
<div class="col-md-12 center-block">
<h1>View the Commissions</h1>
<div class="panel panel-default">
<div class="panel-heading">Commissions</div>
<div class="panel-body">
<p></p>
</div>
<table class="table">
<thead>
<tr>
<th>#</th>
<th>Alias</th>
<th>Description</th>
<th>Price</th>
<th>Status</th>
</tr>
</thead>
<tbody>
<?php
$query = mysqli_query($connect, "SELECT * FROM orders") or die(mysql_error());
while ($row = mysqli_fetch_array($query)) : ?>
<tr>
<th scope="row"><?php echo $row['orderID']; ?></th>
<th><?php echo $row['alias']; ?></th>
<th><?php echo $row['description']; ?></th>
<th><?php echo $row['price']; ?></th>
<th>
// added .status class here
<button type="button" class="btn btn-default btn-info status"
name="<?php echo $row['orderID']; ?>"><?php echo getStatus($row['status']); ?></button>
</th>
</tr>
<?php endwhile; ?>
</tbody>
</table>
</div>
</div>
</div>
</div>
</body>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script type="text/javascript">
// the AJAX for updating the status
$('.status').on('click', function () {
var id = $(this).attr('name');
var btn = $(this);
$.post('php/process.php', {orderId: id}, function (response) {
var res = JSON.parse(response);
if (res.results == true) {
btn.html('Completed');
}
})
})
</script>
</html>
In php/process.php
<?php
include 'php/connect.php';
if (isset($_POST['orderId'])) {
$orderId = $_POST['orderId'];
$sql = "UPDATE `orders` SET `status`= 1 WHERE `orderID` = $orderId";
if (mysqli_query($connect, $sql)) {
echo json_encode(['results' => true]); // when update is ok
}else {
echo json_encode(['results' => false]); // when update fail
}
}

Smoothy update PHP table when new data is entered into SQL table

So, I think I may be in over my head. I've looked around on here for a quite some time but have not been able to find something that will help me.
I am trying to build a display order from, similar to what you would see in a restaurant or fast food, that automatically and smoothly updates when a new entry has been entered into the MySQL table.
I tryed using AJAX but I could not get it to work
Main PHP page
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"> </script>
<scriptsrc="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<link rel="stylesheet" type="text/css" href="css/style.css">
<script src="js/fulfillment.js"></script>
<link href="https://gitcdn.github.io/bootstrap-toggle/2.2.2/css/bootstrap-toggle.min.css" rel="stylesheet">
<script src="https://gitcdn.github.io/bootstrap-toggle/2.2.2/js/bootstrap-toggle.min.js"></script>
</head>
<body>
<div class="container">
<h1>Orders</h1>
<p>Area that displays all of the active and past orders.</p>
<div align="right">
<input id="toggle-event" type="checkbox" checked data-toggle="toggle" data-on="Active" data-off="Past">
</div>
<!-- Active Orders -->
<?php
include '../connect.php';
//get information form tblOrder
$sql = "SELECT * FROM tblOrder WHERE Filled=0";
$result = $db->query($sql);
if (!$result) {
die('Invalid query: ' . mysql_error());
}
?>
<!-- Build the table -->
<h2>Active</h2>
<table ID = "myTable" class="table table-striped">
<thead>
<tr>
<th>Order Number</th>
<th>User ID</th> <!-- will turn to user name later down the road -->
<th>Food</th>
<th>Pick Up Time</th>
<th>Filled</th>
</tr>
</thead>
<tbody>
<?php
// run though tblOrders
if ($result->num_rows > 0) {
// output data of each row
while($row = $result->fetch_assoc()) {
//assign all of the values
$OrderNumber = $row["Order_Number"];
$FoodID = $row["F_ID"];
$DrinkID = $row["D_ID"];
$UserID = $row["User_ID"];
$Filled = $row["Filled"];
$RequestTime = $row["Request_Time"];?>
<!-- out put each line of the value -->
<tr>
<td><?php echo $OrderNumber; ?></td>
<td><?php echo $UserID; ?></td> <!-- switch to name once it is avalible ->
<td><!-- put food order here --></td>
<td><?php echo $RequestTime; ?></td>
<td><input type="button" class="btn btn-default" value="Complete"onclick="toPast(this, <?php echo $OrderNumber?>)"/></td>
</tr>
<?php
}
}
//close the data connection
$db->close();
?>
</tbody>
</table>
JavaScript
function toPast(btn, ONum) {
var dataString = 'OrderNumber=' + ONum + '&UpdateNumber=' + '1';
$.ajax({
type: "POST",
url: "update_sucess.php",
data: dataString,
cache: false,
success: function(html) {
//alert(html);
var row = btn.parentNode.parentNode;
row.parentNode.removeChild(row);
}
});
}
Could anyone point me in the right direction or know someplace has a "how-to" on how to do this that I could read?

PHP - Notice: Undefined index: and not displaying data

this is code of search.php. i want to take search by date from the input box as below.
<form action="visitor-print.php">
<div class="col-sm-3 text-center"><h3>Date</h3>
<input type="text" class="form-control" name="dat" placeholder="Enter Date">
<p class="help-block">Month Format 1,2,3,....29,30..</p>
<button class="btn btn-default"><span>Submit</span></button>
</div>
</form>
this is my visitor-print.php code where i get undefined index error on dat (which is from the other page)
<?php
$dbhost = 'localhost';
$dbuser = 'root';
$dbpass = '';
$conn = mysql_connect($dbhost, $dbuser, $dbpass);
mysql_select_db('visitor_list');
if(! $conn )
{
die('Could not connect: ' . mysql_error());
}
$sql = "SELECT * FROM list1 WHERE d1 = '". $_POST["dat"] . "' ";
$retval = mysql_query( $sql,$conn ) or die("Error: ".mysql_error($conn));
?>
<div class="container">
<h3 class="text-center">User Feed-Back Details</h3><br />
<div class="table-responsive" id="employee_table">
<table class="table table-bordered">
<tr>
<th width="10%">Visitor Name</th>
<th width="10%">Address</th>
<th width="10%">Area to Visit</th>
<th width="10%">Phone No.</th>
<th width="20%">Want to meet with </th>
<th width="50%">Purpose of meeting</th>
</tr>
<?php
while($row = mysql_fetch_array($retval,MYSQLI_BOTH))
{
?>
<tr>
<td><?php echo $row['nm']; ?></td>
<td><?php echo $row['add1']; ?></td>
<td><?php echo $row['area_vis']; ?></td>
<td><?php echo $row['y1']; ?></td>
<td><?php echo $row['app_ty']; ?></td>
<td><?php echo $row['no_per']; ?></td>
</tr>
<?php
}
?>
</table>
</div>
<div align="center">
<button name="create_excel" id="create_excel" class="btn btn-success">Create Excel File</button>
</div>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.0/jquery.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" />
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
<script>
$(document).ready(function(){
$('#create_excel').click(function(){
var excel_data = $('#employee_table').html();
var page = "excel.php?data=" + excel_data;
window.location = page;
});
});
</script>
Problem:
Notice: Undefined index: dat in D:\wamp\www\radissun visitor\visitor-print.php on line 12
and is not showing data from mysql
The answer you are looking for: You are using $_POST - which is just for forms which have method="post". Default method is GET - so your variables are $_GET[]. You can either set the method parameter in the html to POST, or you change your PHP code to GET.
But I must point out, that your code is not usable for productive environments, as it is vulnerable to SQL Injection. See http://www.w3schools.com/sql/sql_injection.asp
MISSING METHOD ON FORM METHOD="POST"
NOTE: IF YOU USE METHOD="POST" YOU CAN GET VALUE BY $_POST['dat']; IF YOUR NOT USING METHOD ATTRIBUTE .FORM JUST SUBMITED AS GET METHOD YOU CAN GET BY $_GET['dat'];
<form action="visitor-print.php" METHOD="POST" >
MISSING FORM SUBMIT
<INPUT TYPE="SUBMIT" NAME="SUBMIT" VALUE="SUBMIT" >
(OR)
ADD TYPE="SUBMIT" TO BUTTON
<button TYPE="SUBMIT" class="btn btn-default"><span>Submit</span></button>

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