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

shubhamkt
shubhamkt
11,675 Points
Posted by shubhamkt
shubhamkt
11,675 Points

multidimensional array

how to print the multi dimensional array

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

echo "</ul>\n";

3 Answers

Christopher Parke
Christopher Parke
21,978 Points
Christopher Parke
Christopher Parke
21,978 Points

I think it's because you have a syntax error in this line

"<li>$name['name'][]</li>\n";

should be "<li>$name['name']</li>\n";

because the [] is already there and includes 'name' as a parameter

geoffrey
geoffrey
28,736 Points
geoffrey
geoffrey
28,736 Points

To print the content of the nested array, you need to loop through the arrays within the array. In other words, you need to use a foreach as you did.

If you don't find the solution, feel free to ask, but that's better you find it on your own.

shubhamkt
shubhamkt
11,675 Points
shubhamkt
shubhamkt
11,675 Points

help with the solution.

geoffrey
geoffrey
28,736 Points
geoffrey
geoffrey
28,736 Points

Shubham kumar Trivedi I've checked the code challenge.

I'm sorry because I gave you a wrong information, now I see clearly the issue. On your side, you wanted to use a foreach loop, (which is correct) to display the information you need.

Except that the foreach should have been done this way:

<?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")
             );

echo "<ul>\n";
foreach($contacts as $contact)
{
    echo"<li>".$contact["name"]." : ".$contact["email"]."</li>"; 
}
echo "<ul>\n";

If you click the preview tab within the code challenge, this will format correctly the result and will look good. However, this is not what they ask in the code challenge, they don't want us to create a foreach.

The error says that :

Bummer! ****** Example: $array[#][STRING]

What we have to do is simply access the elements of the nested array this way:

<?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")
             );

echo "<ul>\n";
echo "<li>".$contacts[0]["name"]." : ".$contacts[0]["email"]."</li>\n"; // [0] => First array within contacts.
echo "<li>".$contacts[1]["name"]." : ".$contacts[1]["email"]."</li>\n";  // [1] => Second array within contacts and etc...
echo "<li>".$contacts[2]["name"]." : ".$contacts[2]["email"]."</li>\n";
echo "<li>".$contacts[3]["name"]." : ".$contacts[3]["email"]."</li>\n";
echo "</ul>\n";

However It's true that in a real situation you would use an array !

Hope It helps and sorry for the wrong information given at first, I read too quickly.