I am showing categories in Menu. Some categories have subcategories.
function for getting parent categories
function get_parent_category(){
$query="select * from blog_categories where parent_id=0
ORDER BY
CASE id
WHEN '2' THEN 1
WHEN '1' THEN 2
WHEN '3' THEN 3
ELSE id
END";
$rows=array();
$result=$this->query($query);
while($row=$this->fetch_array($result)){
$row['url']=$this->get_cat_url($row);
$rows[]=$row;
}
return $rows;
}
Function for subcategories
function get_child_category(){
$query="select * from blog_categories where parent_id!=0";
$rows=array();
$result=$this->query($query);
while($row=$this->fetch_array($result)){
$row['url']=$this->get_cat_url($row);
$rows[]=$row;
}
return $rows;
}
Showing on the page like this:
<ul class="nav navbar-nav">
<li><a href="<?php echo BASE_URL ?>">Home</a></li>
<?php
foreach($this->parent_category as $cat){
foreach($this->child_category as $child_cat){
if($cat['id']==$child_cat['parent_id']){
?>
<li class="dropdown">
<a class="dropdown-toggle" data-toggle="dropdown" href="#"><?php echo $cat['name'];?>
<span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="#"><?php echo $child_cat['name']?></a></li>
</ul>
</li>
<?php
}elseif($cat['parent_id']==0){
?>
<li><a href="<?php echo $cat['url']?>"><span><?php echo $cat['name'];?></span></a></li>
<?php
}
?>
<?php }}?>
Output and Problem
The Main category circle in red color is seerah which has two subcategories. showing two times for first one in drop down one subcategory and for second time second subcategory is showing.
DB structure
What i wants:
I wants to show each subcategories under each parent category without repetition , how can i achieve this?