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PHP

Sahou Kanaan Almelhem
PLUS
Sahou Kanaan Almelhem
Courses Plus Student 15,547 Points
Posted by Sahou Kanaan Almelhem
Sahou Kanaan Almelhem
Courses Plus Student 15,547 Points

foreach with associative array problem ??

<?php

$flavors = array(); $flavors[] = array("name" => "Cookie Dough", "in_stock" => true); $flavors[] = array("name" => "Vanilla", "in_stock" => false); $flavors[] = array("name" => "Avocado Chocolate", "in_stock" => false); $flavors[] = array("name" => "Bacon Me Crazy", "in_stock" => true); $flavors[] = array("name" => "Strawberry", "in_stock" => false);

//add your code below this line foreach($flavors as $key => $item) { echo "<p>" . $item[$key]['name'] . "</p>"; }

/*the output is Notice: Undefined offset: 0 in /home/treehouse/workspace/flavors.php on line 12

Notice: Undefined offset: 1 in /home/treehouse/workspace/flavors.php on line 12

Notice: Undefined offset: 2 in /home/treehouse/workspace/flavors.php on line 12

Notice: Undefined offset: 3 in /home/treehouse/workspace/flavors.php on line 12

Notice: Undefined offset: 4 in /home/treehouse/workspace/flavors.php on line 12*/ ?>

2 Answers

Robert Kulagowski
Robert Kulagowski
4,954 Points
Robert Kulagowski
Robert Kulagowski
4,954 Points

Your code actually contains an array of arrays. I've added a var_dump($flavors) before the foreach.

array(5) {
  [0] =>
  array(2) {
    'name' =>
    string(12) "Cookie Dough"
    'in_stock' =>
    bool(true)
  }
  [1] =>
  array(2) {
    'name' =>
    string(7) "Vanilla"
    'in_stock' =>
    bool(false)
  }
  [2] =>
  array(2) {
    'name' =>
    string(17) "Avocado Chocolate"
    'in_stock' =>
    bool(false)
  }
  [3] =>
  array(2) {
    'name' =>
    string(14) "Bacon Me Crazy"
    'in_stock' =>
    bool(true)
  }
  [4] =>
  array(2) {
    'name' =>
    string(10) "Strawberry"
    'in_stock' =>
    bool(false)
  }
}

If you look at the foreach, it's iterating over the outside of the array, so it's looking at [0] through [4] as the $key, and $item is an associative array with "name" and "in_stock" as the indexes. But in the echo, you're telling the echo to print out the $key (which is only valid in the outer array) of the $item, and it doesn't exist there.

If $key is important, then you'd change your echo to something like this:

echo "<p>key:$key " . $item['name'] . "</p>";

Which will output:

<p>key:0 Cookie Dough</p><p>key:1 Vanilla</p><p>key:2 Avocado Chocolate</p><p>key:3 Bacon Me Crazy</p><p>key:4 Strawberry</p>

Does that make sense?

Sahou Kanaan Almelhem
PLUS
Sahou Kanaan Almelhem
Courses Plus Student 15,547 Points
Sahou Kanaan Almelhem
Sahou Kanaan Almelhem
Courses Plus Student 15,547 Points

thank you very much :) i have understood what exactly $item and $key mean.