We Keep Coding

How to update data from dynamically created table to database in php

I have create a table using php dynamically. But i need to update some of the cell value depending on user input. But i can't figure out how to do that. my codes are given below.
I have found a way to make names an array is to use [] in names attribute from stackoverflow. but it didn't work for me.If i echo $_POST['std_name'] in while loop or outside of loop only the last row of student name is counted. Please Someone help. I am stuck here for 3 days.
<form action="" method="post">
<table>
<tr>
<th>Student ID</th>
<th>Student Name</th>
<th>Student Father Name</th>
<th>Student Mother Name</th>
<th>Student Parents Mobile Number</th>
<th>Student Mobile Number</th>
<th>Student Batch Name</th>
<th>Student College Name</th>
<th>Student Gender</th>
<th>Student Picture</th>
<th>Student Admit Date</th>
<th>January</th>
<th>February</th>
<th>March</th>
<th>April</th>
<th>May</th>
<th>June</th>
<th>July</th>
<th>August</th>
<th>September</th>
<th>October</th>
<th>November</th>
<th>December</th>
</tr>
<tr>
<?php
$host="localhost";
$username="root";
$password="";
$db="paragon_first_year";
$qry="select * from `student_info`";
$con=mysqli_connect($host,$username,$password);
mysqli_select_db($con,$db);
$res=mysqli_query($con,$qry);
if(mysqli_num_rows($res)>0){
while($dt=mysqli_fetch_array($res)){?>
<td><input type="text" name="std_id[]" value="<?php echo $dt['std_id']?>"></td>
<td><input type="text" name="std_name[]" value="<?php echo $dt['std_name']?>"></td>
<td><input type="text" name="std_father_name[]" value="<?php echo $dt['std_father_name']?>"></td>
<td><input type="text" name="std_mother_name[]" value="<?php echo $dt['std_mother_name']?>"></td>
<td><input type="text" name="std_parent_mob[]" value="<?php echo $dt['std_parents_mob_no']?>"></td>
<td><input type="text" name="std_mob[]" value="<?php echo $dt['std_mob_no']?>"></td>
<td><?php echo $dt['std_batch_name'] ?></td>
<td><?php echo $dt['std_college_name'] ?></td>
<td><?php echo $dt['std_gender'] ?></td>
<td><img style="height:100px;width:100px;" src="uploadImage/<?php echo $dt['std_name']."_".$dt['std_pic'] ?>" alt=""></td>
<td><?php echo $dt['std_admit_date'] ?></td>
<td><input type="text" name="jan[]" value="<?php echo $dt['january']?>"></td>
<td><input type="text" name="feb[]" value="<?php echo $dt['february']?>"></td>
<td><input type="text" name="mar[]" value="<?php echo $dt['march']?>"></td>
<td><input type="text" name="apr[]" value="<?php echo $dt['april']?>"></td>
<td><input type="text" name="may[]" value="<?php echo $dt['may']?>"></td>
<td><input type="text" name="jun[]" value="<?php echo $dt['june']?>"></td>
<td><input type="text" name="jul[]" value="<?php echo $dt['july']?>"></td>
<td><input type="text" name="aug[]" value="<?php echo $dt['august']?>"></td>
<td><input type="text" name="sep[]" value="<?php echo $dt['september']?>"></td>
<td><input type="text" name="oct[]" value="<?php echo $dt['october']?>"></td>
<td><input type="text" name="nov[]" value="<?php echo $dt['november']?>"></td>
<td><input type="text" name="dec[]" value="<?php echo $dt['december']?>"></td>
</tr><?php
}
}
?>
</table>
<center>
<input type="submit" name="submit" value="Update Data">
</center>
</form>
</body>
my table is showing nicely
hope someone help. Thanks in advance.

You can use array keys to pass information. In this example, the first key is the database primary key, and the second key is the variable name.
The resulting array would look something like this:
$row[123][std_name] = 'joe';
$row[123][std_father_name] = 'bob';
... etc
$row[124][std_name] = 'sally';
$row[124][std_father_name] = 'john';
...etc
Then, as you iterate through the rows, you get the key (123) to use to update the database, as in where std_id=123.
Note: I have used prepared statements to show updating the database. This is essential. Never put variables in a query using concatenation ( i.e., "select * from table where id='$id'")
Lastly, note the structure. Start with PHP, no print or echo statements. This allows you to work with user input and then redirect. First initialize, then work with user input, then do page logic, and lastly get out of php and output the view (html)
This example is not copy and paste; it has things that need to be filled in, and probably debugged. It is merely intended to show the big picture.
<?php
// initialize
$host="localhost";
$username="root";
$password="";
$db="paragon_first_year";
$con=mysqli_connect($host,$username,$password);
// a simple wrapper to make the prepared query more manageable
// see https://phpdelusions.net/mysqli/mysqli_connect#helper
function prepared_query($mysqli, $sql, $params, $types = "")
{
$types = $types ?: str_repeat("s", count($params));
$stmt = $mysqli->prepare($sql);
$stmt->bind_param($types, ...$params);
$stmt->execute();
return $stmt;
}
// work with user input
if($_SERVER['REQUEST_METHOD'] === 'POST') {
$dataRows = (array)$_POST['data'];
foreach($dataRows as $id=>$data) {
$sql = "INSERT INTO student_info SET std_name=?, std_father_name=?, " .
// etc .
"WHERE std_id=?";
$params = array(
$data['std_name'],
$data['std_father_name'],
// etc...
$id
);
// this does the prepare, bind, and execute... Yes, I could just do the
// bind and execute here, but the time savings isn't worth the trouble.
$stmt = prepared_query($con, $sql, $params);
}
// always redirect after a POST
header('Location: /path/to/next/page/or/this/page');
die;
}
// no user input; ok to use plain old query.
$qry="select * from `student_info`";
mysqli_select_db($con,$db);
$res=mysqli_query($con,$qry);
?>
<html>
...
<form action="" method="post">
<table>
<tr>
<th>Student ID</th>
<th>Student Name</th>
<th>Student Father Name</th>
<th>Student Mother Name</th>
<th>Student Parents Mobile Number</th>
<th>Student Mobile Number</th>
<th>Student Batch Name</th>
<th>Student College Name</th>
<th>Student Gender</th>
<th>Student Picture</th>
<th>Student Admit Date</th>
<th>January</th>
<th>February</th>
<th>March</th>
<th>April</th>
<th>May</th>
<th>June</th>
<th>July</th>
<th>August</th>
<th>September</th>
<th>October</th>
<th>November</th>
<th>December</th>
</tr>
<!-- don't need mysqli_num_rows; the while won't loop if no results -->
<?php while($dt=mysqli_fetch_array($res)): ?>
<tr>
<td><?= $dt['std_id'] ?></td>
<td><input type="text" name="data[<?= $dt['std_id'] ?>]['std_name']" value="<?= $dt['std_name'] ?>"></td>
<td><input type="text" name="data[<?= $dt['std_id'] ?>]['std_father_name']" value="<?= $dt['std_father_name'] ?>"></td>
<td><input type="text" name="data[<?= $dt['std_id'] ?>]['std_mother_name']" value="<?= $dt['std_mother_name'] ?>"></td>
<td><input type="text" name="data[<?= $dt['std_id'] ?>]['std_parent_mob']" value="<?= $dt['std_parents_mob_no'] ?>"></td>
<td><input type="text" name="data[<?= $dt['std_id'] ?>]['std_mob']" value="<?= $dt['std_mob_no'] ?>"></td>
<td><?= $dt['std_batch_name'] ?></td>
<td><?= $dt['std_college_name'] ?></td>
<td><?= $dt['std_gender'] ?></td>
<td><img style="height:100px;width:100px;" src="uploadImage/<?= $dt['std_name']."_".$dt['std_pic'] ?>" alt=""></td>
<td><?= $dt['std_admit_date'] ?></td>
<td><input type="text" name="data[<?= $dt['std_id'] ?>]['jan']" value="<?= $dt['january'] ?>"></td>
<td><input type="text" name="data[<?= $dt['std_id'] ?>]['feb']" value="<?= $dt['february'] ?>"></td>
<td><input type="text" name="data[<?= $dt['std_id'] ?>]['mar']" value="<?= $dt['march'] ?>"></td>
<td><input type="text" name="data[<?= $dt['std_id'] ?>]['apr']" value="<?= $dt['april'] ?>"></td>
<td><input type="text" name="data[<?= $dt['std_id'] ?>]['may']" value="<?= $dt['may'] ?>"></td>
<td><input type="text" name="data[<?= $dt['std_id'] ?>]['jun']" value="<?= $dt['june'] ?>"></td>
<td><input type="text" name="data[<?= $dt['std_id'] ?>]['jul']" value="<?= $dt['july'] ?>"></td>
<td><input type="text" name="data[<?= $dt['std_id'] ?>]['aug']" value="<?= $dt['august'] ?>"></td>
<td><input type="text" name="data[<?= $dt['std_id'] ?>]['sep']" value="<?= $dt['september'] ?>"></td>
<td><input type="text" name="data[<?= $dt['std_id'] ?>]['oct']" value="<?= $dt['october'] ?>"></td>
<td><input type="text" name="data[<?= $dt['std_id'] ?>]['nov']" value="<?= $dt['november'] ?>"></td>
<td><input type="text" name="data[<?= $dt['std_id'] ?>]['dec']" value="<?= $dt['december'] ?>"></td>
<?php endwhile; ?>
</tr>
</table>
<center>
<input type="submit" name="submit" value="Update Data">
</center>
</form>
</body>

Selecting an appending ID attribute with jQuery

Why does the last 'In Stock' field replaces every other 'In Stock' field when I'm trying to place value on the quantity?
<form action="add_sales.php" method="POST">
<table class="table table-striped table-bordered table-hover results table-fixed">
<thead>
<tr>
<th class="text-center">#</th>
<th>Product Name</th>
<th>Description</th>
<th>Price</th>
<th>In Stock</th>
<th style="width: 20%">Quantity</th>
</tr>
<tr class="warning no-result">
<td colspan="8"><i class="fa fa-warning"></i> No Product Found</td>
</tr>
</thead>
<tbody>
<?php
$query = "SELECT * FROM products";
$exec = mysqli_query($connection, $query);
$a = 1;
$b = 1;
while ($row = mysqli_fetch_array($exec)) {
$product_id = $row['product_id'];
$product_name = $row['product_name'];
$product_price = $row['sell_price'];
$description = $row['description'];
$product_quantity = $row['quantity'];
}
?>
<tr>
<td class="text-center"><?php echo $product_id; ?><input type="hidden" name="product_id[]" value="<?php echo $product_id; ?>"></td>
<td><?php echo $product_name; ?></td>
<td><?php echo $description; ?></td>
<td><?php echo $product_price; ?></td>
<td><input type="number" name="hehe" value="<?php echo $product_quantity; ?>" id="<?php echo "qtyResult" . $a++; ?>" disabled></td>
<td><input type="number" name="qtyBuy[]" id="<?php echo "qtyBuy" . $b++; ?>" onkeyup="updateStock(this, event)"></td>
</tr>
<?php } ?>
</tbody>
</table>
<div class="form-group">
<input type="submit" name="addCart" value="Add Items to Cart" class="btn btn-info pull-right">
</div>
</form>
Here is my jQuery script. I think the problem is in the var inStock's value. When I change the var inStock's value to a fixed number, it's working fine.
function updateStock(obj, event) {
var inputQty = obj.value;
var inStock = "<?php echo $product_quantity; ?>";
$(obj).closest('tr').find('input[id^="qtyResult"]').val(inStock - inputQty);
}

Because $product_quantity will be set to the last value in the loop.
If you view source and look at the javascript function, you will see it reads:
function updateStock(obj, event) {
var inputQty = obj.value;
var inStock = "234"; //or whatever the last value was
$(obj).closest('tr').find('input[id^="qtyResult"]').val(inStock - inputQty);
}
As the values can change after the page has loaded (and therefor after php has quit) you should grab the current value from the dom when you need it:
function updateStock(obj, event) {
var inputQty = obj.value;
var quantityInput = $(obj).closest('tr').find('input[id^="qtyResult"]');
quantityInput.val(quantityInput.val() - inputQty);
}

I want particular cell value when i clicking on it

<?php
$con = mysql_connect('localhost','root','');
$db = mysql_select_db("demo",$con);
?>
<!doctype html>
<html>
<head>
<title>Demo</title>
<!--JAVASCRIPT -->
<script src="http://code.jquery.com/jquery-1.9.1.min.js" ></script>
<script>
$(document).ready(function(){
$("#myTable td").click(function() {
var column_num = parseInt( $(this).index() ) + 1;
var row_num = parseInt( $(this).parent().index() )+1;
//$("#result").html( "Row_num =" + row_num + " , Column_num ="+ column_num );
alert(row_num);
});
});
</script>
</head>
<body>
<!--<div id="result"> </div>-->
<table id="myTable" border="1" style="border-collapse: collapse;" cellpadding="8">
<tr>
<th>Name</th>
<th>Qty</th>
<th>Amount</th>
<th>Total</th>
</tr>
<?php
$sQ = "select * from tbl_demo";
$eQ = mysql_query($sQ);
while($fQ=mysql_fetch_array($eQ))
{
$name = $fQ['Name'];
$qty = $fQ['Qty'];
$amt = $fQ['Amount'];
//$total
$total = $fQ['Total'];
?>
<tr>
<td><input type="text" name="name" value="<?php echo $name; ?>" onchange="add($qty,$amt)"/> </td>
<td><input type="number" name="name" value="<?php echo $qty; ?>"/></td>
<td><input type="number" name="name" value="<?php echo $amt; ?>"/></td>
<td><input type="number" name="name" value="<?php echo $total; ?>"/></td>
</tr>
<?php
}
?>
<tr>
<td colspan="3" style="padding-left:400px"> Total </td>
<td class="navigateTest"> <input type="number" name="name" value=""/> </td>
</tr>
<tr>
<td colspan="4" class="navigateTest"> <input type="button" name="submit" id="submit" value="Submit"/> </td>
</tr>
</table>
</body>
</html>
Here is my code. I get index value of particular row nd column bt i can not find value of that cell.. I tried to solve that problem bt i can not understand code which i found..which are the different ways for that??
How i get data of particular cell?????
plz redirect me at right direction...

Jquery Filter table rows by multiple checkboxes

I am trying to get a filter working for a table. What I would like is checkboxes to filter (hide) rows based on whether they're checked or not and if the value is present in the table cell. I have it somewhat working, but it will only sort one of the checkboxes. Also, if there are multiple values in the table cell being filtered, that row is hidden. Thoughts? Thank you in advance for any help. I'm really struggling with this for some reason!
Here is the code I have been using:
$("input:checkbox").click(function () {
var showAll = true;
$('tr').not('.first').hide();
$('input[type=checkbox]').each(function () {
if ($(this)[0].checked) {
showAll = false;
var status = $(this).attr('rel');
var value = $(this).val();
$('td.' + 'status' + '[rel="' + value + '"]').parent('tr').show();
}
});
if(showAll){
$('tr').show();
}
});
The markup is as follows (please excuse some messiness, its Wordpress)
<div class="grants-filter">
<h3 class="filter-title">Filter Scholarships</h3><br/>
<h3>Year of Study:</h3>
<input type="checkbox" name="chx" rel="status" value="Freshman">Freshman
<input type="checkbox" name="chx" rel="status" value="Sophmore">Sophmore
<input type="checkbox" name="chx" rel="status" value="Junior">Junior
<input type="checkbox" name="chx" rel="status" value="Senior">Senior
<br/><br/><h3>Duration:</h3>
<input type="checkbox" rel="duration" value="Summer">Summer
<input type="checkbox" rel="duration" value="Semester">Semester
<input type="checkbox" rel="duration" value="Full Year or More">Full Year or More
</div>
<div class="grants-listing">
<table border="1" id="table" class="grants-table">
<thead>
<tr class="first">
<th>Title</th>
<th>Description</th>
<th>Field</th>
<th>Duration</th>
<th>Year of Study</th>
<th>Other</th>
<th>Procedure</th>
<th>URL</th>
</tr>
</thead>
<tbody>
<?php
$grargs = array ( 'post_type' => 'scholarship');
$grant_query = new WP_Query( $grargs );
while ( $grant_query -> have_posts() ):
$grant_query -> the_post(); ?>
<tr class="grant-detail">
<td>
<?php the_title(); ?>
</td>
<td><?php echo wp_trim_words(get_the_content(), 25 ); ?></td>
<td class="fields" rel="<?php echo get_field('fields'); ?>"><?php echo the_field('fields'); ?></td>
<td class="duration" rel="<?php echo the_field('desired_duration'); ?>"><?php echo the_field('desired_duration'); ?></td>
<td class="status" rel="<?php echo the_field('year-of-study'); ?>"><?php echo the_field('year-of-study'); ?></td>
<td class="other" rel="<?php echo the_field('other'); ?>"><?php echo the_field('other'); ?></td>
<td class="procedure" rel="<?php echo the_field('procedure'); ?>"><?php echo the_field('procedure'); ?></td>
<td class="url"><?php echo get_field('url'); ?></td>
</tr>
<?php endwhile;
wp_reset_postdata(); //reset the first query
?>
</tbody>
</table>

As I think you just are calling the first checkbox [0]
if ($(this)[0].checked) {
call all by inserting someting like
$('input[type=checkbox]').each(function () {
if (this.checked) {
console.log($(this).val());
}
});

Your code works fine, here is a simplified version
$("input:checkbox").click(function() {
var showAll = true;
$('tr').not('.first').hide();
$('input:checkbox:checked').each(function() {
showAll = false;
var status = $(this).attr('rel');
var value = $(this).val();
$('td.' + 'status' + '[rel="' + value + '"]').parent('tr').show();
});
if (showAll) {
$('tr').show();
}
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
<div class="grants-filter">
<h3 class="filter-title">Filter Scholarships</h3>
<br/>
<h3>Year of Study:</h3>
<input type="checkbox" name="chx" rel="status" value="Freshman">Freshman
<input type="checkbox" name="chx" rel="status" value="Sophmore">Sophmore
<input type="checkbox" name="chx" rel="status" value="Junior">Junior
<input type="checkbox" name="chx" rel="status" value="Senior">Senior
</div>
<div class="grants-listing">
<table border="1" id="table" class="grants-table">
<thead>
<tr class="first">
<th>Title</th>
<th>Description</th>
<th>Fields</th>
<th>Status</th>
<th>Procedure</th>
</tr>
</thead>
<tbody>
<tr class="grant-detail">
<td>
Name
</td>
<td>Description</td>
<td class="fields" rel="Freshman">Freshman</td>
<td class="status" rel="Freshman">Freshman</td>
<td class="procedure" rel="Freshman">Freshman</td>
</tr>
<tr class="grant-detail">
<td>
Name
</td>
<td>Description</td>
<td class="fields" rel="Sophmore">Sopho</td>
<td class="status" rel="Sophmore">Sopho</td>
<td class="procedure" rel="Sophmore">Sopho</td>
</tr>
<tr class="grant-detail">
<td>
Name
</td>
<td>Description</td>
<td class="fields" rel="Junior">Junior</td>
<td class="status" rel="Junior">Junior</td>
<td class="procedure" rel="Junior">Junior</td>
</tr>
</tbody>
</table>

When I load my php page then submit button automatically press and page again and again loading?

I'm using wamp server php my admin sql,table created connection every thing is fine,I'm working on local host, but page again and gain loading, not move down cursor etc, submit button automatically click ?
Here is screen shot http://i.imgur.com/QC6RtAg.jpg?1
<center><form method="post">
<table border="0" cellspacing="8">
<tr>
<td><label><b>*Select Campus:</b></label></td>
<td>
<select name="city" id="city">
<option value="">-Please Select-</option>
<option value="Isb">Islamabad</option>
<option value="Abt">Abbotabad</option>
<option value="wah">Wah</option>
<option value="Atk">Attock</option>
<option value="shw">Sahiwal</option>
<option value="veh">Vehari</option>
<option value="vir">Virtual</option>
</select>
<font color="red"><?php echo #$_GET['campus'];?></font>
</td>
</tr>
<tr>
<td><label><b>*Name</b></label></td>
<td><input type="text" name="name" />
<font color="red"><?php echo #$_GET['newname'];?></font>
<td></tr>
<br/>
<tr>
<td><label><b>*Login</b></label></td>
<td><input type="text" name="logid"/>
<font color="red"><?php echo #$_GET['logname'];?></font>
<td></tr>
<br/>
<tr>
<td><label><b>*Email Address</b></label></td>
<td><input type="text"type="require" name="email"/>
<font color="red"><?php echo #$_GET['emailname'];?></font>
</td></tr>
<br/>
<tr>
<td><label><b>*Password</b></label></td>
<td><input type="password" type="require" name="pass"/>
<font color="red"><?php echo #$_GET['passname'];?></font>
</td></tr>
<br/>
<tr>
<td><label><b>*Retype Password</b></label></td>
<td><input type="password" type="require" name="rpass"/>
<font color="red"><?php echo #$_GET['rpassname'];?></font>
</td></tr>
</table>
<table border="0">
<tr id="bu">
<td ><input type="submit" id="cl" value="sign up"name="submit"/></td> </tr>
</table>
</form>
</center>
<?php
$conn = mysqli_connect('localhost', 'root' , '','example');
if(isset($_POST['submit']))<?php
{
$campus=$_POST['city'];
$name = $_POST['name'];
$u_id = $_POST['logid'];
$email = $_POST['email'];
$pass = $_POST['pass'];
$rpass = $_POST['rpass'];
if($campus==''){
echo
"<script>window.open('Log.php?campus=Select campus is Required','_self')
</script>";
exit();
}
if($name==''){
echo
"<script>window.open('Log.php?newname=Name is Required','_self') </script>";
exit();
if($u_id==''){
echo
"<script>window.open('Log.php?logname=User ID is Required','_self')</script>";
exit();
}
if($email==''){
echo
"<script>window.open('Log.php?emailname=Email is Required','_self') </script>";
exit();
}
if($pass==''){
echo
"<script>window.open('Log.php?passname=Password is Required','_self') </script>";
exit();
}
if($rpass==''){
echo
"<script>window.open('Log.php?rpassname=Password is Required','_self') </script>";
exit();
}
$sql = "INSERT INTO student(Campus,User_id,Login,Email,password,Retype_password) values('$campus','$name','$u_id','$email','$pass','$rpass')";
if (mysqli_query($conn,$sql) {
echo "New record created successfully";
print '<script>alert("Successfully Registered!");</script>'; // Prompts the user
print '<script>window.location.assign("login.php");</script>'; // redirects to register.php
} else {
echo "Error: " . $sql . "<br>" . $conn->error;
}$conn->close();
}
?>