php-mysql insert multiple rows from echo radio button - php

Question

Actually i want to develop a application from where user can set attendance for student. so the html form for attendance will come from my db query. and it's coming too but the prob is that how can i insert that form information to my db . actually i searched lot but i didn't get any result for this as perfect as i want i mean please can anyone help me . thanks in advance
<form action="attendance.php" method="post">
<?php include '../database-config.php';
foreach($dbh->query("SELECT * FROM student WHERE active_class='VII'") as $row){
echo "<div>
<label>".htmlentities($row['student_id'])."</label>
<input type='radio' name='atten".htmlentities($row['student_id'])."' checked='checked'>Present
<input type='radio' name='atten".htmlentities($row['student_id'])."'>Absent
</div></br>";
}
?>
<button type="submit" class="btn btn-success btn-lg">Submit</button>
<button type="reset" class="btn btn-danger btn-lg">Reset</button>
</form>

Answer 1

<form action="attendance.php" method="post">
<?php include '../database-config.php';
$result = mysql_query("SELECT * FROM student WHERE active_class='VII'");
foreach($result as $row)
{
?>
<div>
<label><?php echo $row['student_id']?></label>
<input type="radio" name="attend" value="present" checked>Present
<input type="radio" name="attend" value="absent">Absent
</div>
</br>
<?php
}
?>
<button type="submit" class="btn btn-success btn-lg">Submit</button>
<button type="reset" class="btn btn-danger btn-lg">Reset</button>
</form>
so in php you can get value like this
<?php
$attend = $_POST['attend'];
echo $attend;
?>
So in $attend it contain value(value="present") of radio button.
it may be present or either absent

Answer 2

damn getting tired xD
this should work though but you have to add the column attendency to the database table by yourself cheers
<form action="" method="post">
<?php
include '../database-config.php';
if(isset($_POST['attendency']) && isset($_POST['id']))
{
$id_to_update = $_POST['id'];
$status = $_POST['attendency'];
$ar = array('p','a');
$attend = !empty($status) && in_array($status,$ar) ? $status : 'p';
//you have to create a column named attendency for this to work
$sql = "INSERT INTO student(attendency) VALUES ('$attend ') WHERE user_id = '$id_to_update '";
$dbh->query($sql);
}
foreach($dbh->query("SELECT * FROM student WHERE active_class='VII'") as $row)
{
if($row['attendency'] == 'p')
{
$p = 'checked="checked"';
$a = '';
} else {
$a = 'checked="checked"'
$p = '';
} ?>
<div>
<input type="hidden" name="id" value="<?=$row['student_id']?>">
<label><?=$row['student_id']?></label>
<input type='radio' name='attendency' <?=$p?>>Present
<input type='radio' name='attendency' <?=$a?>>Absent
</div></br>
<?php } ?>
<button type="submit" class="btn btn-success btn-lg">Submit</button>
<button type="reset" class="btn btn-danger btn-lg">Reset</button>
</form>