how to insert logic work on php - php

Question

i got template php from internet. then i want make other insert. but i dont know this code work
in code have submit button like this
<input type="submit" class="btn btn-primary" value="Добави">
and form like this
<div class="form-group">
<label>Nama</label>
<input type="text" class="form-control" name="name" required="required">
</div>
<div class="form-group">
<label> Deskripsi</label>
<textarea class="form-control" name="description"></textarea>
</div>
<div class="form-group">
<label>Gambar</label>
<input type="file" name="image" class="form-control" required="required">
</div>
<div class="form-group">
<label>Harga</label>
<input type="text" name="price" class="form-control" required="required">
</div>
<div class="form-group">
<label>
Cafe Yang Menjual</label>
<select name="cafe_id" class="form-control" required="required">
<option value="">Silahkan Pilih Restoran Yang Akan Menjual Makanan Ini</option>
<?php foreach($admin->getAllMenus() as $menu) { ?>
<option value="<?php echo $menu->id; ?>"><?php echo $menu->nama; ?></option>
<?php } ?>
</select>
</div>
and php syntax from that food.php
if(isset($_POST["name"])){
$image_name=$_FILES["image"]["name"];
$image=$_FILES["image"]["tmp_name"];
$image_name=time().$image_name;
move_uploaded_file($image, "../foods/".strtolower($image_name));
$_POST["image"]=strtolower($image_name);
$admin->addFood($_POST);
}
and modul code for insert
public function addFood($data){
if($this->db->query("insert into foods(name,image,description,price,cafe_id) values('".$data['name']."','".$data['image']."','".$data['description']."',".$data['price'].",".$data['cafe_id'].")")){
echo"<script>window.location.href='index.php?page=foods';
alert('Успешно добавяне на храна');</script>";
}
else{
echo"<script>window.location.href='index.php?page=foods';
alert('Проблем при добавяне на храна');</script>";
}
}
i dont know how that code connect with that submit button. with value value="Добави"
that i know is isset($_POST["value submit button"])) but in this code there is name.

Answer 1

I'm not sure I totally understand your question but basically a <form> HTML element can be used to transfer data to the server, such as:
<form method="POST" action="food.php">
...
</form>
Then when the submit method is triggered, the data will be POSTed to food.php.
Just to be clear, you need to have PHP installed and running on a webserver before this will work; you can't just copy PHP code into a HTML file and hope it works.