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PHP PHP Arrays and Control Structures PHP Arrays Multidimensional Arrays

Beto Najera
Beto Najera
7,072 Points
Posted by Beto Najera
Beto Najera
7,072 Points

I don't understand how to solve this and i've tried many ways.

I have some problems with this challenge.

index.php 
<?php
//edit this array
$contact1 = array('Alena Holligan' => 'alena.holligan@teamtreehouse.com');
$contact2 = array('Dave McFarland' => 'dave.mcfarland@teamtreehouse.com');
$contact3 = array('Treasure Porth' => 'treasure.porth@teamtreehouse.com');
$contact4 = array('Andrew Chalkley' => 'andrew.chalkley@teamtreehouse.com');

$contacts = array($contact1, $contact2, $contact3, $contact4);

var_dump($contacts);

echo "<ul>\n";
//$contacts[0] will return 'Alena Holligan' in our simple array of names.
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";
echo "</ul>\n";
Ryan Breece
Ryan Breece
4,160 Points

Instead of adding 4 separate $contact arrays, you need to add separate arrays into the same contact array using 'name' as the key.

<?php
//edit this array
$contacts = array(
['name' => 'Alena Holligan'], 
['name' =>'Dave McFarland'], 
['name' =>'Treasure Porth'], 
['name' =>'Andrew Chalkley']
);

echo "<ul>\n";
//$contacts[0] will return 'Alena Holligan' in our simple array of names.
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";
echo "</ul>\n";

then add the email as the key

<?php
//edit this array
$contacts = array(
  ['name' => 'Alena Holligan', 'email' => 'alena.holligan@teamtreehouse.com' ], 
  ['name' =>'Dave McFarland', 'email' => 'dave.mcfarland@teamtreehouse.com'], 
  ['name' =>'Treasure Porth', 'email' => 'treasure.porth@teamtreehouse.com'], 
  ['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>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";
echo "</ul>\n";

finally, concatenate the variables with the strings in the echo

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

2 Answers

Jonathan Grieve
MOD
Jonathan Grieve
Treehouse Moderator 91,253 Points
Jonathan Grieve
Jonathan Grieve
Treehouse Moderator 91,253 Points

Hi there Beto,

The echos that you;ll use to display the data have been provided for you, as well as the values. What you have to do is find a way to display the values dynamically rather than just as hard coded strings.

This is simple enough to do. HINT.

  • You need to display the values by their key `e.g. $array["value"};
  • You'll also need to concatenate the strings as if you try to includes the values as part of a single string it won't work.
  • Have a look at the strings in the echo and where these match up with the values in the $contacts array.

Good luck!

Beto Najera
Beto Najera
7,072 Points
Beto Najera
Beto Najera
7,072 Points

Thanks you both for your help. I can't solve that yet but I'll keep in mind what you say