Displaying Moodle database data as ul li using php [duplicate] - php

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Closed 10 years ago.
Possible Duplicate:
Nested array. Third level is disappearing
I kinda have a problem here with displaying moodle database data as ul li form using php.
I want to display all the categories of courses, not courses, in their proper nested form as ul li.
The table I'm working on is mdl_course_categories.
Whenever the php script runs, the list must be updated dynamically
The code looks as shown:
<?php
$con = mysql_connect("localhost","root","");
if (!$con) {
die('Could not connect: ' . mysql_error());
}
mysql_select_db("moodle19", $con);
$result = mysql_query("SELECT name AS COURSE_NAME,parent FROM mdl_course_categories");
if (isset($result)!=1) {
$message = 'Invalid query: ' . mysql_error() . "\n";
}
echo "<p> The courses taught are: </p>";
while ($row = mysql_fetch_array($result)) {
$b=$row['COURSE_NAME'];
$c=$row['parent'];
// $a=mysql_query("Select id from mdl_course_categories");
// $condition=mysql_query("SELECT name AS COURSE_NAME FROM mdl_course_categories WHERE parent='0'");
if ($c==0) {
echo "<ul>
<li>" .$b. "</li>
</ul>";
}
else {
echo "<ul>
<li>" .$b. "</li>
</ul>";
$result1 = mysql_query("SELECT name AS COURSE_NAME FROM mdl_course_categories WHERE depth!='1'");
while ($row1 = mysql_fetch_array($result1)) {
$b1=$row1['COURSE_NAME'];
echo "<ul>
<li>" .$b1. "</li>
</ul>";
}
}
}
?>
I have confusion in understand what is going wrong?

Answer 1

I think this will helpful for you -
$query_catetories = mysql_query('SELECT cc.id, cc.parent, cc.name FROM mdl_course_categories cc ');
$categories = mysql_fetch_all($query_catetories);
$tmp_categories = array();
foreach ($categories AS $row) {
$row['id'] = (int) $row['id'];
$row['parent'] = (int) $row['parent'];
if (!$tmp_categories[$row['parent']])
$tmp_categories[$row['parent']] = array();
$tmp_categories[$row['parent']][] = $row;
}
$course_catetories = buildNode($tmp_categories);
echo '<ul>';
foreach ($course_catetories as $course_catetory) {
print_category_child($course_catetory);
}
echo '</ul>';
function print_category_child($category) {
echo '<li>' . $category['name'];
if (array_key_exists('children', $category)) {
echo '<ul>';
foreach ($category['children'] as $child) {
print_category_child($child);
}
echo '</ul>';
}
echo '</li>';
}
function buildNode($inputArray, $parent = 0) {
$return = array();
foreach ($inputArray[$parent] AS $key => $row) {
if (#$inputArray[$row['id']]) {
$row['children'] = buildNode($inputArray, $row['id']);
}
$return[] = $row;
}
return $return;
}
function mysql_fetch_all($result) {
$all = array();
while ($all[] = mysql_fetch_assoc($result)) {
}
return array_filter($all);
}
Thanks