Hi In this Article I am going to show how to create QR code and save it to database also fetch QR Code in a Table

Create a Page addqrcode.php in a root directory and paste the below code.

<section class="main--content">
        <div class="row gutter-20">
            <div class="col-md-6 mx-auto">
                <!-- Panel Start -->
                <?php $id=$_GET['apartnerId'];$data=qrCode($id);?>
                <div class="panel">
                    <div class="panel-heading">
                        <h3 class="panel-title">Form</h3>
                    </div>
                    <div id="apartner-form" class="panel-content">
                <form method="POST" action="ajax/qrcode.php" enctype="multipart/form-data">
                <div class="form-group">
                    <legend>Add QrCode</legend>
                   <?php 
                   if(isset($_GET['msg']))
                    {
                        echo $_GET['msg'];
                    }

                   ?>
                </div>
                    <!-- Member ID -->
                    <div class="form-outline">
                        <input type="hidden" class="form-control" id="uid" name="uid"
                            value="<?php echo $data['uid']; ?>" readonly />
                    </div>
                    <div class="form-outline">
                        <input type="text" class="form-control" id="fname" name="fname"
                            value="<?php echo $data['first_name']; ?>" readonly />
                    </div><br>
                    <div class="form-outline">
                        <input type="text" class="form-control" id="lname" name="lname"
                            value="<?php echo $data['last_name']; ?>" readonly />
                    </div><br>
                    <div class="form-outline">
                        <input type="text" class="form-control" id="email" name="email"
                            value="<?php echo $data['email']; ?>" readonly />
                    </div><br>
                    <div class="form-outline">
                        <input type="text" class="form-control" id="bcode" name="bcode"
                            value="<?php echo $data['bcode']; ?>" readonly />
                    </div><br>
                    <div class="form-outline">
                        <input type="text" class="form-control" id="state" name="state"
                            value="<?php echo $data['sts']; ?>" readonly />
                    </div><br>
                    <div class="form-outline">
                        <input type="text" class="form-control" id="district" name="district"
                            value="<?php echo $data['district']; ?>" readonly />
                    </div><br>
                    <div class="form-outline">
                        <input type="text" class="form-control" id="city" name="city"
                            value="<?php echo $data['city']; ?>" readonly />
                    </div><br>
                    <!-- Submit button -->
                    <button type="submit" class="btn btn-primary btn-sm mt-3" name="submit">Submit</button>
                </form>
            </div>
                </div>
        </div>
    </section>
    <!-- Main Content End -->

Create a Folder under root directory Connection/Functions.php

Functions.php
<?php
include('DBClass.php');// Database Connection
function qrCode ($id){
    $db= new DBClass();
    $result= $db->query('SELECT * FROM `tbl_accounts` where `uid`= "'.$id.'"');
    return mysqli_fetch_array($result);
}

Create a Folder ajax/qrcode.php and paste the below code

qrcode.php

<?php
include('../libs/phpqrcode/qrlib.php'); 
if(isset($_POST['uid'])){
$path ='../temp/';
$uid=$_POST['uid'];
$time=time();
$file=$uid.$time.".png";
$email= $_POST['email'];
$subject= $_POST['bcode'];
// $fname= $_POST['fname'];
$lname= $_POST['lname'];
$sts= $_POST['sts'];
$district= $_POST['district'];
$city= $_POST['city'];
$body = $_POST['fname'];
$codeContents = 'mailto:'.$email.'?subject='.urlencode($subject).'&body='.urlencode($body);

include('../Connection/Functions.php');
$conn = new DBClass();
// $sql="UPDATE `tbl_accounts` SET `qrcode`="'.$file.'" WHERE `uid`="'.$uid.'"');
$sql="UPDATE tbl_accounts SET `qrcode` = '$file' WHERE `uid` = '$uid'";
if($conn->query($sql)===true){
    QRcode::png($codeContents, $path.''.$file, QR_ECLEVEL_L, 5);
    header('location:../apartnerQrcode?msg= Data added Successfully');
}
else{
    header('location:../apartnerQrcode?msg= Faild!!');
}
}
?>
                                      

Download Php qrcode libery fro github and include it on qrcode.php page

https://github.com/giansalex/phpqrcode/tree/master/src

include(‘../libs/phpqrcode/qrlib.php’);

Create a folder where you want to save the QRcode

$path =’../temp/’;

If you want to full source code you can msg or comment me.

Thanks..