One isset within another isset with html and php not working - php

Question

Dear Stack Overflow members,
I’m trying to create a form for school awards where a user will select a class (level) and submit. The awards for that class (there can be many awards) will display in a table with a dropdown of a list of students in that class beside each award.
The user will then select a student from the dropdown beside each award and submit again which will save the records in a table.
It is working fine except the last part where the students and the awards are not being saved. Not sure if the issue is with one isset within another isset is causing the issue.
<?php
if(isset($_POST['submit'])) {
include 'db_connect.php';
$level = $_POST['level'];
$query = mysqli_query($conn, "SELECT a.awardcode, a.level, b.awardname, a.year FROM awardyrlevel AS a
INNER JOIN award AS b
ON a.awardcode = b.awardcode
WHERE a.level = '$level' AND a.year = year(curdate())");
?>
<table border="1" style= "background-color: white; color: #761a9b; <!--margin: 0 auto-->;" >
<thead>
<tr>
<th>Award Code</th>
<th>Award Name</th>
<th>Year Level</th>
<th>Select Student</th>
</tr>
</thead>
<tbody>
<?php
while( $row = mysqli_fetch_assoc( $query ) ){
?>
<tr>
<td> <input type = "text" name="awardcode[]" value = "<?php echo $row['awardcode']; ?>" readonly /> </td>
<td><?php echo "{$row['awardname']}" ?> </td>
<td><?php echo "{$row['level']}" ?></td>
<td><select name="studcode[]" >
<option disabled selected value> -- Select Student -- </option>
<?php
$sql = mysqli_query($conn, "SELECT * FROM student where year_level = '$level'");
while ($row = mysqli_fetch_assoc($sql)){
echo '<option value = " '.$row['stud_code'].'"> '.$row['name'].' </option>';
}
?>
</select>
</td>
</tr>\n;
<?php } ?>
</tbody>
</table>
<br><br>
<input id="save_button" type="submit" name="saveselection" value="Save Selection">
<input id="exit_button" type="submit" name="exit" value="Exit" onclick="window.history.go(-1); return false;">
<?php
if(isset($_POST['saveselection'])) {
$awardcode = $_POST['awardcode'];
$studcode = $_POST['studcode'];
$level = $row['level'];
$year = year(curdate());
$session_user = '2365';
echo $awardcode;
foreach ($_POST['awardcode'] as $awardcode) {
$query = mysqli_query($conn, "INSERT INTO `awardwinner`(`awardcode`, `stud_code`, `level`, `year`, `doe`, `enteredby`)
VALUES ('$awardcode', '$studcode', '$level', '$year', now(), '$session_user')");
}
}
}
?>
The code I have written is simple with html and php. I tried to debug this for quite sometime. Can any of you please suggest what is wrong with this that the records cant be saved?

Answer 1

There are a couple of things wrong with this code, including not keeping to standards of PHP programming. Keep your issets at the top of the page, don't litter them throughout, it makes things difficult to track.
You have an input with the name listed as an array... why? You're not submitting multiple values here. Perhaps you mean to use it as a checkbox/radio? Otherwise it's not needed.
Then in your final query, you're actually using ` for a number of them, instead of ' . That's a ` which should be under your esc key, instead of an apostrophe (')
Also just as a preference, I tend to write for readability rather than raw efficiency when working with a few people, so I personally would write:
$query = "WHATEVER MY QUERY IS";
$get_thing_query = mysqli_query($connection, $query);
while($row = mysqli_fetch_assoc($get_thing_query)){
//Do your stuff, if you're not expecting multiple rows don't use while.
}