Insert array data in mysql from dynamically created input fields

I have form in which multiple places can be added with jquery. Whole div id="stores" that can be added dynamically (cloned) is below. There is no limitation on number of places and every place can have multiple categories and subcategories. Now I need to insert that data in mysql and dont know how to do it. For example, can categories and subcategories be in same field? Category inside brackets followed by subcategories separated with comma or something and that for every category so I can list them after (or that cannot be done?). I dont know php that much so there is better solution probably. Thank you

    <p>Places</p>
     <div id="stores" class="clone">
       <label>Name</label><input type="text" name="name[]" id="name">
       <label>Address</label><input type="text" name="adr[]" id="adr">
       <label>City</label><input type="text" name="city[]" id="city">
       <label>Contact person</label><input type="text" name="con[]" id="con">
       <label>Telephone</label><input type="text" name="tel[]" id="tel">
       <label>E-mail</label><input type="text" name="mail[]" id="mail">
       <label>Products (separate with comma)</label><textarea name="prod[]"></textarea>
       <span class="catsubcat">Select category and subcategory</span>
         <div class="catleft">
           <h2><input type="checkbox" name="cat[]" value="Cat1">Cat1</h2>
             <input type="checkbox" name="subcat[]" value="Subcat1"> Subcat1<br/>
             <input type="checkbox" name="subcat[]" value="Subcat2"> Subcat2
         </div>
         <div class="catleft">
           <h2><input type="checkbox" name="cat[]" value="Cat2">Cat2</h2>
             <input type="checkbox" name="subcat[]" value="Subcat1"> Subcat1<br/>
             <input type="checkbox" name="subcat[]" value="Subcat2"> Subcat2
         </div>
         <div class="catleft">
           <h2><input type="checkbox" name="cat[]" value="Cat3">Cat3</h2>
             <input type="checkbox" name="subcat[]" value="Subcat1"> Subcat1<br/>
             <input type="checkbox" name="subcat[]" value="Subcat2"> Subcat2
         </div>
    </div>

UPDATED PHP - with this code i get all categories and subcategories inserted in one field separated with comma. First categories then subcategories. Can I somehow insert it in a way that it could be displayed properly later, with every subcategory under its category. For example instead of inserting like this in field:
category1,category2,subcategory1,subcategory1,subcategory2,subcategory2
can it be inserted like this:
(category1)subcategory1,subcategory2,(category2)subcategory1,subcategory2,

    extract($_POST);
    $n = count($name);
    $ct = $_POST['cat'];
    $sct = $_POST['subcat'];
    $result = array_merge((array)$ct, (array)$sct);
    $category = implode(",", $result); 
    for ($i = 0; $i < $n; $i++) {
        $query = 'INSERT INTO places (name, address, city, contact, tel, mail, products, category) VALUES (\'' . $name[$i] . '\', \'' . $adr[$i] . '\', \'' . $city[$i] . '\', \'' . $con[$i] . '\', \'' . $tel[$i] . '\', \'' . $mail[$i] . '\', \'' . $prod[$i] . '\', \'' . $category. '\')';}