Nidified mysqli_fetch_assoc while - php

Question

I have a problem with the following code:
$query = "SELECT * FROM movie_list WHERE id=$id";
$result_q = mysqli_query($conn, $query);
$row = mysqli_fetch_assoc($result_q);
if ($row['movie_type'] == 'E' || $row['movie_type'] == 'S'){
$query_serie = "SELECT * FROM movie_list WHERE id_serie=$row[id_serie]";
$result_q_serie = mysqli_query($conn, $query_serie);
$query_serie_cont = "SELECT serie_number FROM movie_list WHERE id_serie = $row[id_serie] AND serie_number IS NOT null GROUP BY serie_number";
$result_q_serie_cont = mysqli_query($conn, $query_serie_cont);
[...]
<?php
while($row_serie_cont = mysqli_fetch_assoc($result_q_serie_cont)){ ?>
<li>
<a class="collapsible-header collapsible-header waves-effect waves-teal bold">Season <?php echo $row_serie_cont['serie_number']?></a>
<div class="collapsible-body">
<ul>
<?php
while($row_serie = mysqli_fetch_assoc($result_q_serie)){
if ($row_serie['serie_number'] == $row_serie_cont['serie_number']){
echo "<li>".$row_serie['episode_number']."</li>";
}
}
echo "</ul>";
echo "</div>";
}
?>
</li>
It works perfect the first while but the second time the while($row_serie) variable are missing. Debugging the page I see the $row_serie variable disappear after completed all the first while($row_serie_cont) but not reappearing at all when it was triggered the second time.
What I've miss in the code?

Answer 1

you close li after loop make it correct
while($row_serie_cont = mysqli_fetch_assoc($result_q_serie_cont)){ ?>
<li>
<a class="collapsible-header collapsible-header waves-effect waves-teal bold">Season <?php echo $row_serie_cont['serie_number']?></a>
<div class="collapsible-body">
<ul>
<?php
while($row_serie = mysqli_fetch_assoc($result_q_serie)){
if ($row_serie['serie_number'] == $row_serie_cont['serie_number']){
echo "<li>".$row_serie['episode_number']."</li>";
}
}
echo "</ul>";
echo "</div>";
echo "</li>"// inside the loop
}
?>

Answer 2

Seems that insert $result_q_serie = mysqli_query($conn, $query_serie);into the second while do the trick.
I don't understand why i need to repopulate result_q_serie is needed but now it works.
If someone can propose a better solution I'm hearing
<?php
while($row_serie_cont = mysqli_fetch_assoc($result_q_serie_cont)){ ?>
<li class="no-padding">
<ul class="collapsible collapsible-accordion">
<li>
<a class="collapsible-header collapsible-header waves-effect waves-teal bold">Season <?php echo $row_serie_cont['serie_number']?>
</a>
<div class="collapsible-body">
<ul>
<?php
$result_q_serie = mysqli_query($conn, $query_serie);
while($row_serie = mysqli_fetch_assoc($result_q_serie)){
if ($row_serie['serie_number'] == $row_serie_cont['serie_number']){
echo "<li>
".$row_serie['episode_number']."</li>
"; } } echo "
</ul>
"; echo "
</div>
</li>
</ul>
</li>
"; } ?>
</ul>

Answer 3

seems that use mysqli_data_seek($result, 0); do the trick the right way.