Insert dữ liệu từ form vào csdl

[Nguyen_Hai2 (Nguyễn Hải)]

Em mới học php và đang gặp một số khó khan ạ. Sau khi join 2 bảng để hiển thị ra form thì e muốn truyền những dữ liệu đã lấy được trong form này vào một bảng khác ở csdl. Tuy nhiên e truyền được name vào trong khi date và môn học vẫn đc. Mn giúp em với ạ

    <?php
    	 include('db.php');
         include('admin_menu.php');
    	 if(isset($_SESSION['username'])){
    	if(isset($_POST['choose'])){
    		$class = $_POST['class'];
    		$date = $_POST['date'];
            $name = $_POST['name'];
    	}
        ?>
    <form name="" method="post" action="" enctype="multipart/form-data" >

    <?php
    	$query = $db->query("select  * from class") or die(mysqli_error());
        $query2 = $db->query("select  * from daily_atten group by date ") or die(mysqli_error());
    ?>

    <tr>
    	<th>Select class </th>
        <td>
        	<select name="class" class="form-control my_form">
    			<?php
           			 while($row = mysqli_fetch_assoc($query)){ ?>
                    	<option value="<?php echo $row['class_name']; ?>"><?php echo $row['class_name']; ?></option>
       			 <?php  } ?>
                 
    		</select>
        </td>
    </tr>
    <tr>
    	<th>Select Date</th>
        <td>
            <select name="date" class="form-control my_form">
                <?php
                     while($row = mysqli_fetch_assoc($query2)){ ?>
                        <option value="<?php echo $row['date']; ?>" ><?php echo $row['date']; ?></option>
                 <?php } ?>
            </select>          
        </td>
    </tr>
    <tr>
    	<td colspan=2 style="padding-left:170px;"><input type="submit" value="choose" name="choose" class="my_btn" action:"choose"></td>
    </tr>

    </table>
    </div>
    <div class="col-md-6 col-sm-6 col-xs-12"></div>
    </div>
    <h3 style="font-weight:bold; text-transform:uppercase; padding-bottom:5px;"> Take Attendance </h3>
    <?php
    	$query3 = $db->query("select daily_atten.date, student_details.name, student_details.class
                             from daily_atten
                             inner join student_details on student_details.class = daily_atten.class
                             where daily_atten.class='$class' and daily_atten.date='$date'") or die(mysqli_error());

    ?>

    <table class="table table-bordered table-responsive">
    	<tr>
            <th><center>S.No.</center></th>
            <th><center>Student Roll No.</center></th>
            <th><center>Student Name</center></th>
            <th><center>Subject</center></th>
            <th><center>Date</center></th>
            <th><center>Present</center></th>
        </tr>
        <?php
    	$id = 1;
    	while($row = mysqli_fetch_assoc($query3)){ ?>
        <tr>
        	<td><center><?php echo $id; ?></center></td>	
            <td><center><?php echo $row['roll_no']; ?></center></td>
            <td><center><?php echo $row['name']; ?></center></td>
            <td><center><?php echo $row['class']; ?></center></td>
            <td><center><?php echo $row['date']; ?></center></td>
            <td><center><select name="present" class="form-control my_form" method="post">
                        <option value="Yes">Yes</option>
                        <option value="No">No</option> 
                    </select></center>
            </td>
        </tr>
        <?php $id++; } ?>
            <tr>
                <td colspan="12"><center><input type="submit" value="submit" name="submit" class="my_btn" action:"submit" /></center></td>
            </tr>
    <?php
            if(isset($_POST['submit'])){
            //print_r($_POST);die;
            $roll = $_POST['roll_no'];
            $name = $_POST['name'];
            $class = $_POST['class'];
            $date = $_POST['date'];
            $present = $_POST['present'];
            $sql = $db->query("INSERT INTO `stu_atten` (`masv`,`name`,`class`,`date`,`present`) values ('$roll','$name','$class','$date','$present')") or die(mysqli_error());
            if($sql){
                echo "<script>alert('Details Saved Successfully');</script>";
            }else{
                echo "<script>alert('Failed to Save the details. Please Check');</script>"; 
            }
    }

    ?>

    </table>
    </form>