Foreach里面的foreach Strange Bug

Question

<?php
    foreach($products as $product){
      //some code here , echoing products and everything works there
      foreach($types as $type){
        echo $type['type'];
        // only does the echo on the first occurence of this "types" loop
      }
    }
?>

Hi everyone,

I'm making a type of form in order to allow people, for each product of the database, to specify the type of the product.

$products and $types are both distinct arrays. Products contains all my products and $types contains all my types.

Actually I have only 2 products and 2 types.

So, my question is: Why the echo doesn't show anything for the second occurence of the foreach($products as $product), and show the good results at the first occurence?

This is exactly the same array, called 2 times, but working only at the first occurence of the loop. Very Strange for me.

Hope you'll understand despite my poor english. Bye

Answer 1

Let's assume there are 4 products and 7 types. With the following code you are executing the outer loop 4 times and the inner loop 7 times. What is printed is the content of $type['type'] for all 7 items. And this 4 times.

<?php
    foreach($products as $product){
        foreach($types as $type){
         echo $type['type'];
        }
     }
?>

What you need is a $products array that contains the types for the product, so that you can use the following code

<?php
    foreach($products as $product){
        foreach($product->type as $type){
         echo $type['type'];
        }
     }
?>