updating data from mysql in html table - php

Question

Here is my code. There's is a "Edit" link. I want to update data and save with that link
$op_sql = "SELECT * FROM tbl_users";
$result = $con->query($op_sql);
if ($result->rowCount() > 0)
{
echo "<table class='table' style='margin-left: 301px; margin-top: 10px; background-color: white;'>-;
echo "<tr>";
echo "<th>ID</th>";
echo "<th>Name</th>";
echo "<th>Email</th>";
echo "<th>Date of Birth<th>";
echo "<th></th>"; echo "</tr>";
while($row = $result->fetch())
{
echo "<tr>";
echo "<td>" . $rowrID1 . "</td>";
echo "<td>" . $row['Name'] . "</td>";
echo "<td>" . $row['Email']. "</td>";
echo "<td>" . $row['Date of Birth'] . "</td>";
echo "<td><a href='?id=".$row['ID']."'>Edit</a></td>";
echo "</tr>";
}
echo "</table>"; unset($result);

Answer 1

You can add the user_edit.php url in anchor tag href to edit the user details like this.
echo "<td><a href='user_edit.php?id=".$row['ID']."'>Edit</a></td>";
user_edit.php
Here you can get the id of specific user and get the details from database and create update form like this.
if(isset($_GET['id']) && $_GET['id']!='')
{
$op_sql = "SELECT * FROM tbl_users where id=$_GET['id']";
$result = $con->query($op_sql);
if ($result->rowCount() > 0)
{
$row = $result->fetch();
?>
<form action="user_update.php" method="post">
<input type="text" name="Name" value="<?php $row['Name'] ?>" />
.
.
<input type="hidden" name="id" value="$_GET['id']" />
.
.
<input type="submit" name="update" value="update" />
<?php
}
}
user_update.php
Here you can get the updated form data and update in database
if(isset($_POST['update']) && isset($_POST['id']) && $_POST['id']!='' )
{
// here you can get the updated form data and update in database
// update user set Name=$_POST['Name'],.... where id=$_POST['id'];
}
NOTE :
Try to use Prepared statement or PDO

Answer 2

I am giving an answer from This question you can use the same answer in your context here I'm providing the code from the accepted answer.
You can use a get method here in place of the post according to your situation.
HTML form:
<form method="post" action="handler.php">
<button type="submit" name="passed" id="passed" class="btn btn-success btn-flat"><i class="fa fa-check"></i></button>
<button type="submit" name="insufficient" id="insufficient" class="btn btn-danger btn-flat"><i class="fa fa-times"></i></button>
</form>
PHP:
<?php
// db connection
if(isset($_POST['passed'])){
$allowed = mysqli_query($conn," UPDATE users SET Access = "1" WHERE id = '27' ");
}
if(isset($_POST['insufficient'])){
$notallowed = mysqli_query($conn," UPDATE users SET Access = "0" WHERE id = '453' ");
}
Be careful if this has any user interaction at any given point.
Use a prepared statement, or PDO with prepared statements, they're much safer.