PHP - Infinite Categories And Sub-categories

How can i make unlimited sub categories when i have this mysql fields: id, name, parent


Code: [Select]
$query = "SELECT * FROM cats";
$result = mysql_query($query);
while ($var = mysql_fetch_array($result)) {
  echo $var['name'];
  // now i need here some code for sub cats, but sub cat in subcat :(
}
Can someone help me?

Hi there, I have a piece of code that takes all posts with the category of 'model' and puts it on the models page. It then displays the post as a gallery using fancy box. The problem is I want all posts with the category of 'faces' to go on the faces page, but at the moment they are appearing on both pages. Here is the code I have. Any help will guarantee a donation as I am at my wits end trying to figure this out.

Code: [Select]
<?php
  global $post;

  $args = array(
    'numberposts'     => 8,
    'offset'          => 0,
    'category'        => 'models',
    'orderby'         => 'post_date',
    'order'           => 'DESC',
    'post_type'       => 'post',
    'post_status'     => 'publish' );

  $posts_array = get_posts( $args );
  $x = 1; // track model
  foreach( $posts_array as $post ) {
    setup_postdata($post); ?>
    <div id="model-thumb">
<?php
    $arg2 = array( 'post_type' => 'attachment', 'numberposts' => -1, 'order' => 'ASC', 'post_status' => null, 'post_parent' => $post->ID );
    $attachments = get_posts($arg2);
    if ($attachments) {
        $i = 1; // track images
        foreach ( $attachments as $attachment ) {
            $image_attributes = wp_get_attachment_image_src( $attachment->ID, 'full' );
            if ($i == 1) { // Get thumbnail info to display with second image
                $img1src = $image_attributes[0];
                $img1w = $image_attributes[1];
                $img1h = $image_attributes[2];
            } elseif ($i == 2) { // Display thumbnail with link to second image
?>
           <a class="allModels" rel="gallery<?php echo $x; ?>" href="<?php echo $image_attributes[0]; ?>" 
?><img src="<?php echo $img1src; ?>" width="<?php echo $img1w; ?>" height="<?php echo $img1h; ?>"/></a><br /><p><?php the_content();?></p></div>

<?php
            } else { // Other images
?>
                <div style="display:none;"><a class="allModels" rel="gallery<?php echo $x; ?>" href="<?php echo $image_attributes[0]; ?>"><img src="<?php echo $image_attributes[0]; ?>" width="<?php echo $image_attributes[1]; ?>" height="<?php echo $image_attributes[2]; ?>"/></a></div>

<?php
            }
            $i++; // Increase image count
        }
    }

    $x++; // Increase model count
  }

?>

Hello dear friends,

If i've the following ( categories - gifts )

<?PHP
$sql ="select *  from  categories";
$result= mysql_query($sql);
while($line= mysql_fetch_array($result)){
$qryrow="select * from gifts where gifts='$line[1]'";
}
?>

it means select category and its gifts

now my question how to view it all in table for example if i add

Code: [Select]
<TABLE cellSpacing=1 cellPadding=1 width="100%">
<TBODY>
<TR>
<TD>
<?php echo "". $line[1].""; ?>
</TD>
</TR>
</TBODY>
</TABLE>
it will show me like this
 

How can i make it like this



my problem how to make table like this and where to put the php variable  .. 

thanks

Hi all am haiving abit of a problem am trying to query 6 categories with 6 games each.With the code i done is only showing one cat with 6 games. How can i fix this ?. If you go to games-flash.co.uk you will see at the bottom of the home page that only one cat shows.   php code.

     <div class="catgames">

If i have a list of categories like:
1. Billboards and advertisement section
  1(a)City Clock
    1(a)(i)Application fee  (has columns for approved price and proposed price)
    1(a)(ii)Advertisement Per year (has columns for approved price and proposed price)

  1(b)Billboards
    1(b)(i)Application fee for construction (has columns for approved price and proposed price)
    1(b)(ii)Charge per year without advertisement (has columns for approved price and proposed price)

  1(c)Something here.....
    1(c)(i) something here...(has columns for approved price and proposed price)
    1(c)(ii)something here...(has columns for approved price and proposed price)
    1(c)(iii) something here... (has columns for approved price and proposed price)
     e.t.c

THEN SOME CATEGORIES LOOK LIKE:category 2
2. Category name
  2(a)something here..(has columns for approved price and proposed price)
  2(b)something here..
    2(b)(i)something here..(has columns for approved price and proposed price)
    2(b)(ii)something here..(has columns for approved price and proposed price)



NOW: i have categories without sub categories and others with sub-sub categories , a main category doesn't does have a column for prices ( or lets just say other columns) , a sub category WITHOUT its sub category will have columns for prices, if a sub category has its sub category, then its subcategory should have columns for prices (this is where my problem is - how do i handle such a situation in php Mysql?? )

Hi,

I have been working on an eCommerce platform for the last few months. Its almost complete but I need to do one thing and thats to only display sub categories if products exist in them.

This is the site craftgo.me (development site),

and this is how the categories are produced for a category page. ie. http://www.craftgo.me/category.php?cat_id=96

Code: [Select]
if($_GET['cat_id']) {
$parents_id = $_GET['cat_id'];
$cat_num_rows_sql = "SELECT category_id, parent_id FROM mccategories WHERE parent_id = '$parents_id'";
$cat_num_rows_result = mysql_query($cat_num_rows_sql);
$cat_row_count = mysql_num_rows($cat_num_rows_result);

if($cat_row_count == '0'){
$current_cat_parent_sql = "SELECT parent_id FROM mccategories WHERE category_id = '$cat_id'";
$current_cat_parent_result = mysql_query($current_cat_parent_sql);
$cat_parent_row = mysql_fetch_array($current_cat_parent_result);
$parent_id = $cat_parent_row['parent_id'];
} else {
$parent_id = $_GET['cat_id'];
}
}



$catsql = "SELECT category_id, category_name FROM mccategories WHERE cat_showing = '0' AND parent_id = '$parent_id' ORDER BY category_name";
$catresult = mysql_query($catsql);
while($catrow = mysql_fetch_array($catresult)) {

$category_id = $catrow['category_id'];
$cat_name = $catrow['category_name'];

echo '<li><a href="category.php?cat_id=' . $category_id . '">' . $cat_name . '</a></li>';
}

In the mcproducts table the category id for each product is under 'product_category'


Im not even sure where to start to make this work, but if anyone could give me a pointer, that would be super.

Many thanks
Eoin

Hi,

So i'm having a little trouble trying to simplify some code I already have.

Code: [Select]
$result = mysql_query("SELECT images, cat_id FROM image_cat");

while ($row=mysql_fetch_array($result))
{
$cat_id=$row['cat_id'];
echo $cat_id;
$imgresult = mysql_query("SELECT * FROM images WHERE cat_id='".$cat_id."'");
while ($col=mysql_fetch_array($imgresult))
{
echo $col['img_id'];
}
}

Okay, so this works, however i'm sure I can bring it together under one query, though i'm truly stumped as to how?
I thought I could do a simple join:

Code: [Select]
$result = mysql_query("SELECT image_cat.cat_id, images.img_id WHERE image_cat.cat_id=images.image_cat");

This works, but repeats the image category on each loop. I could remove this via php if statements, but there must be a simpler/mysql solution.

If it doesn't make any sense I need to get

Img cat 1
-img 1
-img 2

img cat 2
-img 3
-img 4

etc etc

That join will give

img cat 1
-img 1
img cat 1
-img 2
img cat 2
-img 3

Hope that makes sense?? And any help would be amazing!
Thanks.

I have two tables subcat and category

structure
subcat
id_subcat|id_of_cat|subcat_name| and for
 main categories
ID_cat|cat_name|

now what I want to display them as
Main category
subcategory1
subcategory2
Main category2
subcategoryX
etc...

Here's the code I'm using but doesn't work,it doesn't display anything.

<?php
$query = "
SELECT ID_cat, id_subcat, subcat_name, cat_name 
  FROM subcat, category 
  WHERE ID_cat=id_subcat";
$result = mysql_query($sql);
 
$lastCat = null;
while($row = mysql_fetch_assoc($result)) {
  # Check if you need to print the category_name
  if($lastCat != $row['ID_cat']) {
# Not the same category as the last one!
# Print it and save the ID
$lastCat = $row['ID_cat'];
echo "<br />". $row['ID_cat'];
  }
 
  # Print the sub category
  echo "<br />". $row['subcat_name'];
}
?>

Hello! I've got exactly what I've wanted in my previous topic so I have decided to make a new topic for some help.

Quote

General
General Discussion
Description here

Entertainment Discussion
Description here

Gaming
Console Discussion
Description here

Handheld Discussion
Description here


And a database like this;
id title description parent 1 General description here 0 2 Gaming description here 0 3 General Discussion description here 1 4 Entertainment Discussion description here 1 5 Console Discussion description here 2 6 Handheld Discussion description here 2

Code: [Select]
<?php
function generate_forums($parent)
{
$has_childs = false;

global $forums_array;        

foreach($forums_array as $key => $value)        
{
if ($value['parent'] == $parent)
{
if ($has_childs === true)
{
$has_childs = false;
}
echo '<a href="/category/' . $value['title'] . '/">' . $value['title'] . '</a><br>' . $value['description'] . '';        
generate_forums($key);        
echo '<br>';
}
} 
}
generate_forums(0);
?>
The code works wonders. But it is hard to customize template wise.

$ID#1 $title = General
I would start off with <table>
I need to have the Categories that Parent = ( 0 ) to have a HTML <tr>
I also need the Categories with Parent = ( Value ) to have a HTML <td>
Then the tags would be closed off before $ID#2 $title = Gaming's template would start again.

I keep trying to scramble the coding around and can't seem to find that probably "simple" touch.
Thanks in Advanced.

Hello, New to php&mysql here and need a little help.  I want to make category list with sub-categories and sub-sub-categories. The goal is when I load website I will see full list with master(root)categories . Then when I click some categories should load sub-category and if I click on sub-category should load sub-sub-category. Something like this:

Computers
     -> Motherboards
             -> Model 1
             -> Model 2
             -> etc.
Monitors
     -> Model 1
     -> Model 2

As you can see max level of sub-category will be 2+root.  Here is the perfect example what I want to do http://3docean.net/category   I don't understand(know) also how exactly will look my database table? How to store categories and sub-categories.   I don't want someone to write full code etc as I want to learn it but will be great if you guys can show me some good tutorial how to make it mostly database structure.   Thank you in advance!   p.s.  Sorry for my English!  

Hey all,

I have a relationship where a zone has many posts and a category has many zones but a zone can also have many categories. The zones are basically parts of a page, such as the main area and sidepanel stored in database as records with name fields such as 'panel' and 'main'. There's a serious flaw right now and I would like to know the best solution to address it. Right now I access the posts of a zone of a category like this:

Code: [Select]
$category->zone->get()->post->get();

The above ends up displaying all the posts in the database for any given category because when category is selected, it searches for the associating zones, and then selects all posts related to those zones, which is wrong. i want to select all posts of the zones associated with that particular category.

Current database:

Code: [Select]
posts
id zone_id

zones
id name

categories_zones
id zone_id category_id

categories
id

What should I do? Add a category_id column to the posts table and relate the post directly to the category as well as directly to the zones table so the post table would have two foreign keys: category_id and zone_id

Would this be the most effective thing to do given my requirements?

Thanks for response.

Im struggling with how to filter items that have multiple categorises say if i wanted to search for a shoe that is good for walking and hiking in my database?

Shoe_id
Shoe name
color_id type_id

colors color_id color   type type_id type

My problem is what do i do in a situations like this? say a shoe is good for walking and running? aka type 1 and 2 

shoe id 1 shoe name nike color id 1 type id 1 and 2   

I have made a custom post type for products, and am using a custom taxonomy for the product categories. The thing that I am wondering about is that sometimes a product category is a parent, and sometimes a child, but sometimes both. For instance, if you have a top level category named shoes, then you might have a sub category named Nike. However, Nike also has shirts, so you could say that shoes and shirts were both subcategories of Nike. Do you know what I'm saying? It's like there is no real parent to child relationship, but they are both parents and both children of each other. How do you handle this type of situation?

Hello, I am doing (well trying to do, anyway) a script where I need to follow a link, and through its source (file_get_contents) i need to to follow each "category" and into its "subcategory" (and sometimes even SUBsubcategory).
Lets say the first in the menu is called "Catfood", the second "Dogfood",
you click on "Catfood" and you get a submenu with for example "Whiskas", another one called "Purina Pro",
and you click "Whiskas" and you see a list of food called for example "Whiskas Junior Chicken" and "Whiskas Junior Fish".

then after i have followed "Whiskas", i need to go back and follow "Purina Pro".
then after "Purina Pro" i need to go back to "Dogfood" and do the same to its submenu + subsubmenu + food menu..

so yeah, thats pretty much it basically..
i have already used wget for windows to download the entire website to not put load on it all the time when trying stuff out..

i use RegEx to find categories, their products and price, and i got all that covered, it's just that the website isn't built very friendly for using Regex to tie lets say "Purina Pro" with being in the "Catfood" category, so i have to go through all categories and subcats to save the categories in maybe an array, and bind the subcategories to the main category ("Purina Pro" with "Catfood")

i hope this all doesn't sound too errr weird lol, any help is very much appreciated even enough to just get me started on my own! =)


****************** EDIT BELOW:

The menu looks a bit like this, though it's orinally not about cat or dogfood, they are just examples

Catfood
  - Whiskas
  - Purina Pro
Dogfood
  - Royal Canin
     - Puppy food
     - Grown
     - Senior
  - Bozita Robur

I am developing a CMS with articles and categories.  I am making a feature for the admin panel that shows all the categories.  In the table, I would like to include each category's latest article.  My traditional method is to select just the categories in one query, loop through the results, and then inside the category loop have a query that gets the information on the latest article... So something like...

$query = "
     SELECT category_id, title, description
     FROM categories
     ORDER BY title ASC";
 
if($query = mysql_query($query)){
 
     while($cat=mysql_fetch_assoc($query)){
 
            $query_article = "
                 SELECT article_id, category_id, title
                 FROM articles
                 WHERE category_id = ".$cat['category_id']."
                 ORDER BY article_id DESC
                 LIMIT 1";
 
            $last = mysql_fetch_assoc($query_article);
 
       }
 
}

          How could I use joins and/or subqueries to achieve my goal of combining these two queries into one?  I have come up with a query which is below:

SELECT
c.category_id, c.title, c.description,
a.article_id, a.category_id, a.title, COUNT(a.article_id) AS total_articles
FROM article_categories AS c
LEFT JOIN articles AS l ON (
SELECT
article_id AS article_id, category_id, title AS article_title
FROM articles AS l
WHERE l.category_id = c.category_id
ORDER BY l.article_id
DESC LIMIT 1)
LEFT JOIN articles AS a ON (c.category_id = a.category_id)
GROUP BY c.category_id
ORDER BY c.title ASC

  When I use the above query, I get an error saying "Operand should contain 1 column(s)"   I would also like to add something that counts the total number of articles in the category.   Thanks for your time!