fetch result from database by array codeigniter - php

Question

I have a table of food where I store category ids as coma separated like in the below image
food table
I made a method in model which takes array (category ids) as argument and fetches the food items which have ids matching to the array from argument.
I made the below query
if(count($categoryIds) > 0 && count($allergyIds) == 0 ){
$tempArr = array();
foreach($categoryIds as $eachCategoryId){
$sql = "Select food.food_id,food_name,food_image,food_thumbnail,description,food_variations.price as price,is_active
from food
join food_variations on food_variations.food_id = food.food_id
where FIND_IN_SET($eachCategoryId,category_id)
and food.restaurant_id = $restaurantId
and food.is_active = 1
and food.is_deleted = 0
and food.food_status = 3
and food_variations.food_variation_id = food.default_food_variation_id";
$result = $this->db->query($sql)->result_array();
array_push($tempArr, $result);
}
echo "<pre>";print_r($tempArr);
}
Below is the result of above query
Array
(
[0] => Array
(
[0] => Array
(
[food_id] => 10
[food_name] => Rama Mckee
[food_image] =>
[food_thumbnail] =>
[description] => asdfs
[price] => 34
[is_active] => 1
)
[1] => Array
(
[food_id] => 6
[food_name] => Rishi
[food_image] =>
[food_thumbnail] =>
[description] => test
[price] => 120
[is_active] => 1
)
[2] => Array
(
[food_id] => 5
[food_name] => test
[food_image] => http://localhost/gastroapp/assets/uploads/food_images/a5918726b920e7cbfc7f90e1afc48091.jpg
[food_thumbnail] => http://localhost/gastroapp/assets/uploads/food_images/thumb/a5918726b920e7cbfc7f90e1afc48091.jpg
[description] => test
[price] => 120
[is_active] => 1
)
)
[1] => Array
(
[0] => Array
(
[food_id] => 10
[food_name] => Rama Mckee
[food_image] =>
[food_thumbnail] =>
[description] => asdfs
[price] => 34
[is_active] => 1
)
[1] => Array
(
[food_id] => 7
[food_name] => ezhva
[food_image] =>
[food_thumbnail] =>
[description] => ddsfsd
[price] => 20
[is_active] => 1
)
[2] => Array
(
[food_id] => 8
[food_name] => test
[food_image] =>
[food_thumbnail] =>
[description] => test
[price] => 22
[is_active] => 1
)
[3] => Array
(
[food_id] => 6
[food_name] => Rishi
[food_image] =>
[food_thumbnail] =>
[description] => test
[price] => 120
[is_active] => 1
)
)
)
I am getting duplicate results and I think this might also cause performance issues.
The below was the query when I had only one category per food which was giving me desired result.
return $this->db->select('food.food_id,food_name,food_image,food_thumbnail,description,food_variations.price as price,is_active')
->from('food')
->join('food_variations', 'food_variations.food_id = food.food_id')
->where_in('category_id',$categoryIds)
->where('food.restaurant_id', $restaurantId)
->where('food.is_active', '1')
->where('food.is_deleted', '0')
->where('food.food_status','3')
->where('food_variations.food_variation_id IN( select food_variation_id from food_variations where food_variation_id = food.default_food_variation_id )')
->get()
->result_array();
Please help.

Answer 1

First You need to insert your list in an array
$list = {ids column}
$list = array_map("intval", explode(",", str_replace(',' , '', $list)));
Now your list is saved in an array $list
Now you can call it
foreach($list as $value) {
$sql = "SELECT * FROM menu WHERE user_id = '$user_id' AND id = '$value' AND deleted = '0' AND active = '1';";
$result = mysqli_query($dBconnection, $sql);
$check = mysqli_num_rows($result);
if ($check>0) {
while($row = mysqli_fetch_assoc($result)) {
cho $row['id'];
}
} else {
echo 'empty list';
}
}

Answer 2

For mysql, string column is recommended for saving static data instead of adding just IDs. Instead of just integer, you will have to store the object with relevant values. If you want it's relational data, its better to use an intermediate table.
like U need an extra table category_products table to store category_id and product_id since You have many-to-Many relationships(a product have many category and a category have many products)