Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

PHP PHP Arrays and Control Structures PHP Arrays Multidimensional Arrays

Posted by Yousif Sayer
Yousif Sayer
7,073 Points

Please need help in this challenge 

<?php
//edit this array
//$contacts = array('Alena Holligan', 'Dave McFarland', 'Treasure Porth', 'Andrew Chalkley');
$contacts = array(array(
  'Alena Holligan' => 'alena.holligan@teamtreehouse.com',
  'Dave McFarland' => 'dave.mcfarland@teamtreehouse.com',
  'Treasure Porth' => 'treasure.porth@teamtreehouse.com',
  'Andrew Chalkley' => 'andrew.chalkley@teamtreehouse.com',
));
echo "<ul>\n";
//$contacts[0] will return 'Alena Holligan' in our simple array of names.
echo "<li>$contacts[0]['Alena Holligan']</li>\n";
echo "<li>$contacts[0]['Dave McFarland']</li>\n";
echo "<li>$contacts[0]['Treasure Porth']</li>\n";
echo "<li>$contacts[0]['Andrew Chalkley']</li>\n";
echo "</ul>\n";
index.php 
<?php
//edit this array
//$contacts = array('Alena Holligan', 'Dave McFarland', 'Treasure Porth', 'Andrew Chalkley');
$contacts = array(array(
  'Alena Holligan' => 'alena.holligan@teamtreehouse.com',
  'Dave McFarland' => 'dave.mcfarland@teamtreehouse.com',
  'Treasure Porth' => 'treasure.porth@teamtreehouse.com',
  'Andrew Chalkley' => 'andrew.chalkley@teamtreehouse.com',
));
echo "<ul>\n";
//$contacts[0] will return 'Alena Holligan' in our simple array of names.
echo "<li>$contacts[0]['Alena Holligan']</li>\n";
echo "<li>$contacts[0]['Dave McFarland']</li>\n";
echo "<li>$contacts[0]['Treasure Porth']</li>\n";
echo "<li>$contacts[0]['Andrew Chalkley']</li>\n";
echo "</ul>\n";
/*
echo "<li>Alena Holligan : alena.holligan@teamtreehouse.com</li>\n";
echo "<li>Dave McFarland : dave.mcfarland@teamtreehouse.com</li>\n";
echo "<li>Treasure Porth : treasure.porth@teamtreehouse.com</li>\n";
echo "<li>Andrew Chalkley : andrew.chalkley@teamtreehouse.com</li>\n"
*/
Austin Whipple
Austin Whipple
29,725 Points
Austin Whipple
Austin Whipple
29,725 Points

Cleaned up your code samples a bit!

4 Answers

Yousif Sayer
Yousif Sayer
7,073 Points
Yousif Sayer
Yousif Sayer
7,073 Points

I'm stuck with this challenge!

Yousif Sayer
Yousif Sayer
7,073 Points
Yousif Sayer
Yousif Sayer
7,073 Points

I tried this code and no luck

<?php //edit this array //$contacts = array('Alena Holligan', 'Dave McFarland', 'Treasure Porth', 'Andrew Chalkley'); $contacts["Alena"]=[ "name" => "Alena Holligans", "email" => "alena.holligan@teamtreehouse.com" ];

$contacts["Dave"]=[ "name" => "Dave McFarland", "email" => "dave.mcfarland@teamtreehouse.com" ];

$contacts["Treasure"]=[ "name" => "Treasure Porth", "email" => "treasure.porth@teamtreehouse.com" ];

$contacts["Andrew"]=[ "name" => "Andrew Chalkley", "email" => "andrew.chalkley@teamtreehouse.com" ];

echo "<ul>\n"; //$contacts[0] will return 'Alena Holligan' in our simple array of names. echo "<li>" . $contacts["Alena"]["name"] . " : " . $contacts["Alena"]["email"] . "</li>\n"; echo "<li>" . $contacts["Dave"]["name"] . " : " . $contacts["Dave"]["email"] . "</li>\n"; echo "<li>" . $contacts["Treasure"]["name"] . " : " . $contacts["Treasure"]["email"] . "</li>\n"; echo "<li>" . $contacts["Andrew"]["name"] . " : " . $contacts["Andrew"]["email"] . "</li>\n"; echo "</ul>\n"; ?>

jason chan
jason chan
31,009 Points
jason chan
jason chan
31,009 Points

//Try these are associative arrays

<?php
$contacts = array(
  array('name' => 'Alena Holligan', 'email' => 'alena.holligan@teamtreehouse.com'),
  array('name' => 'Dave McFarland', 'email' => 'dave.mcfarland@teamtreehouse.com'),
  array('name' => 'Treasure Porth', 'email' => 'treasure.porth@teamtreehouse.com'),
  array('name' => 'Andrew Chalkley', 'email' => 'andrew.chalkley@teamtreehouse.com'),
);

// . . .
//And after that replace hardcoded text with data from array:

<?php
// . . .
echo "<ul>\n";
//$contacts[0] will return 'Alena Holligan' in our simple array of names.
echo "<li>", $contacts[0]['name'], " : ", $contacts[0]['email'], "</li>\n";
echo "<li>", $contacts[1]['name'], " : ", $contacts[1]['email'], "</li>\n";
echo "<li>", $contacts[2]['name'], " : ", $contacts[2]['email'], "</li>\n";
echo "<li>", $contacts[3]['name'], " : ", $contacts[3]['email'], "</li>\n";
echo "</ul>\n";
Yousif Sayer
Yousif Sayer
7,073 Points
Yousif Sayer
Yousif Sayer
7,073 Points

Thanks for the help, it still doesn’t work. This the challenge that I'm trying with

In the code below, we have a simple array of contact names. We want to use the $contacts array to fill in the hardcoded list of names an email addresses. To hold the email as well as the name for each contact, we need a multidimensional array, meaning each person in the contact list will have their own array. The first step is to make each person their own single item ASSOCIATIVE array, using 'name' as the key for these internal arrays.