当我单击php时的while循环和条件

Question

When i click, i want display a next item of my db like this

 for( $i = 0; $i < $count; $i++ ) {
        if(isset($_POST['yes'])){
            $select = $db->prepare('SELECT * FROM node where id=:id');
            $select->bindParam(':id', $current_id_left);
            $select->execute();
            $nodes = $select->fetch();

            $current_id_left = $nodes->id_left_node_children;
            $current_id_right = $nodes->id_right_node_children;
            $current_question = $nodes->questions;
        }

it works but the loop gives me a last item. Before a last item, I have a second item which is not displayed.

How can i display item one by one ?

Answer 1

The problem with your code is you are using $i in your for loop. This is correct, but you need to use $i inside your code also. At the moment you are looping but doing the same execution every time. Here is a simple Example to help you.

for( $i = 0; $i < $count; $i++ ) {
  $x = $i;
  echo $x;
}