通过PHP的数据库帮助

Question

I'am a total noob when it comes to programming, i can read and write a bit of HTML, but thats it. I need help with creating a new undersite for my webpage http://findaphone.dk where you'll be able to watch all models instead of only the ones that matches your answers. The original idea behind the page, were that you could get help finding the smartphone that matches your preferences, but as I see the aren't really converting, i will give the users the ability to go to a page where they can see all models that we offer on the site.

I think coding wise, it should be pretty simple, because the code is already written, but instead of sorting of phones, as it does now, it should simply show all available opportunities. My PHP code looks like this right now:

// Main First Search (4 Questions)
    public function filter()
    {


        $price = $this->input->post('price');
        if ($price == '3000') {
            $price2 = '0';
        } else if ($price == '5500') {
            $price2 = '3000';
        } else if ($price == '6000') {
            $price = '10000';
            $price2 = '3500';
        }
        $size = $this->input->post('size');
        $type = $this->input->post('type');
        $design = $this->input->post('design');

        //echo "SELECT * FROM `product_info` WHERE `ac_price` > $price2 AND `ac_price` <= $price AND `design` = '$type' AND `size` = '$size' AND `type` = '$design' GROUP BY `id` ORDER BY `rating` DESC";die;
        $filter = $this->queries->custom("SELECT * FROM `product_info` WHERE `ac_price` > $price2 AND `ac_price` <= $price AND `design` = '$type' AND `size` = '$size' AND `type` = '$design' GROUP BY `id` ORDER BY `rating` DESC");


        if ($filter == null) {
            echo '';
        }

I think thats the part where the site chooses the phones that matches the answers from the database. If not please tell me how it should look like. Thanks for your help in advance!!

Answer 1

Take a look at your SQL query. The query includes the search parameters you've created earlier in the code - logically, by removing WHERE queries from your statement, you're removing limitations in the search.

$filter = $this->queries->custom("SELECT * FROM `product_info` GROUP BY `id` ORDER BY `rating` DESC");

Without WHERE queries, you're now selecting all elements from product_info , grouping by ID and ordering by rating.

For more basic MySQL help take a look at http://arachnoid.com/MySQL/