$product = '';
$stmt = $verbinding->query("SELECT
product_category, product_id, parent FROM
Productcategory ORDER BY product_category");
$categorien = $stmt->fetchAll();
foreach($categorien as $cats){
if($cats['parent'] === $producten){
echo '<form action="product-list.php" method="post">
<input type="submit" name="cats" value="'. $cats['product_category'] .'"></form>';
echo $producten;
//var_dump($_POST);
if(isset($_POST['cats'])){
echo $_POST['cats'];
echo $cats['product_category'];
echo $cats['product_id'];
if($_POST['cats'] === $cats['product_category']){
$product = $cats['product_id'];
echo $product;
echo "gelukt!!";
}
}
}
}
So, to update my question, this code works partially, but not with the if($_POST['cats'] === $cats['product_id']){ statement. The problem is that my $_POST['cats'] just sends no information. I do not understand why. I should say that although I'm using the same "name" value in another form, if I don't do that it won't even pass the if(isset($_POST['cats'])){ statement.
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
From your form, the action page is "product-list.php", is it the same page where you handle the form logic?
If not, then you need to write the following code in the product-list.php you created.
.... if(isset($_POST['categorien'])){ echo "pastcategory?"; if($_POST['categorien'] === $cat['product_category']){ $producten = $cat['product_id']; echo "pastcategory!!!!"; echo $producten; } } ....