My browser is generating many warnings

I have checked the syntax many times but I am still getting the following errors Warning: include(inc/data.php): failed to open stream: No such file or directory in /home/treehouse/workspace/index.php on line 2

Warning: include(): Failed opening 'inc/data.php' for inclusion (include_path='.:/usr/share/pear:/usr/share/php') in /home/treehouse/workspace/index.php on line 2

Warning: include(inc/functions.php): failed to open stream: No such file or directory in /home/treehouse/workspace/index.php on line 3

Warning: include(): Failed opening 'inc/functions.php' for inclusion (include_path='.:/usr/share/pear:/usr/share/php') in /home/treehouse/workspace/index.php on line 3

Notice: Undefined variable: catalog in /home/treehouse/workspace/index.php on line 17

Warning: Invalid argument supplied for foreach() in /home/treehouse/workspace/index.php on line 17

Here is my index.php file '''php <?php include("inc/data.php"); include("inc/functions.php");

$pageTitle = "Personal Media Library"; $section = null;

include("inc/header.php"); ?> <div class="section catalog random">

        <div class="wrapper">

            <h2>May we suggest something?</h2>

                            <ul class="items">
                        <?php 
                foreach($catalog as $id => $item) {
                    echo get_item_html($id,$item);
                }
                ?>                          
            </ul>

        </div>

    </div>

<?php include("inc/footer.php"); ?> '''

My functions.php file '''php <?php function get_item_html($id,$item) { $output = "<li><a href='#'><img src='" . $item["img"] . "' alt='" . $item["title"] . "' />" . "<p>View Details</p> . "</a></li>"; return $output; } '''_______________________________________ Catalog.php file '''php <?php include("inc/data.php"); include("inc/functions.php");

$pageTitle = "Full Catalog"; $section = null; // a variable created to handle underlining of nav elements when active. null is used for the full catalog as we do not want it underlined.

if (isset ($_GET["cat"])) { //if the cat query exists execute this code. if it doesnt then the default is "Full Catalog". if ($_GET["cat"] == "books") { $pageTitle = "Books"; // $pageTitle is the variable used in the files for the Title tag $section = "books"; } else if ($_GET["cat"] == "movies") { $pageTitle = "Movies"; $section = "movies"; } else if ($_GET["cat"] == "music") { $pageTitle = "Music"; $section = "music"; } }

include("inc/header.php"); ?>

<div class="section catalog page">

<div class="wrapper">

<h1><?php echo $pageTitle; ?> </h1>

    <ul class="items">
        <?php 
        foreach($catalog as $id => $item) {
        echo get_item_html($id,$item);

} ?> </ul>

 </div>

</div>

<?php include("inc/footer.php"); ?> '''

my data.php file '''php <?php $catalog[101] = [ "title" => "A Design Patterns: Elements of Reusable Object-Oriented Software", "img" => "img/media/design_patterns.jpg", "genre" => "Tech", "format" => "Paperback", "year" => 1994, "category" => "Books", "authors" => [ "Erich Gamma", "Richard Helm", "Ralph Johnson", "John Vlissides" ], "publisher" => "Prentice Hall", "isbn" => '978-0201633610' ]; $catalog[102] = [ "title" => "Clean Code: A Handbook of Agile Software Craftsmanship", "img" => "img/media/clean_code.jpg", "genre" => "Tech", "format" => "Ebook", "year" => 2008, "category" => "Books", "authors" => [ "Robert C. Martin" ], "publisher" => "Prentice Hall", "isbn" => '978-0132350884' ]; $catalog[103] = [ "title" => "Refactoring: Improving the Design of Existing Code", "img" => "img/media/refactoring.jpg", "genre" => "Tech", "format" => "Hardcover", "year" => 1999, "category" => "Books", "authors" => [ "Martin Fowler", "Kent Beck", "John Brant", "William Opdyke", "Don Roberts" ], "publisher" => "Addison-Wesley Professional", "isbn" => '978-0201485677' ]; $catalog[104] = [ "title" => "The Clean Coder: A Code of Conduct for Professional Programmers", "img" => "img/media/clean_coder.jpg", "genre" => "Tech", "format" => "Audio", "year" => 2011, "category" => "Books", "authors" => [ "Robert C. Martin" ], "publisher" => "Prentice Hall", "isbn" => '007-6092046981' ]; //Movies $catalog[201] = [ "title" => "Forrest Gump", "img" => "img/media/forest_gump.jpg", "genre" => "Drama", "format" => "DVD", "year" => 1994, "category" => "Movies", "director" => "Robert Zemeckis", "writers" => [ "Winston Groom", "Eric Roth" ], "stars" => [ "Tom Hanks", "Rebecca Williams", "Sally Field", "Michael Conner Humphreys" ] ]; $catalog[202] = [ "title" => "Office Space", "img" => "img/media/office_space.jpg", "genre" => "Comedy", "format" => "Blu-ray", "year" => 1999, "category" => "Movies", "director" => "Mike Judge", "writers" => [ "William Goldman" ], "stars" => [ "Ron Livingston", "Jennifer Aniston", "David Herman", "Ajay Naidu", "Diedrich Bader", "Stephen Root" ] ]; $catalog[203] = [ "title" => "The Lord of the Rings: The Fellowship of the Ring", "img" => "img/media/lotr.jpg", "genre" => "Drama", "format" => "Blu-ray", "year" => 2001, "category" => "Movies", "director" => "Peter Jackson", "writers" => [ "J.R.R. Tolkien", "Fran Walsh", "Philippa Boyens", "Peter Jackson" ], "stars" => [ "Ron Livingston", "Jennifer Aniston", "David Herman", "Ajay Naidu", "Diedrich Bader", "Stephen Root" ] ]; $catalog[204] = [ "title" => "The Princess Bride", "img" => "img/media/princess_bride.jpg", "genre" => "Comedy", "format" => "DVD", "year" => 1987, "category" => "Movies", "director" => "Rob Reiner", "writers" => [ "William Goldman" ], "stars" => [ "Cary Elwes", "Mandy Patinkin", "Robin Wright", "Chris Sarandon", "Christopher Guest", "Wallace Shawn", "André the Giant", "Fred Savage", "Peter Falk", "Billy Crystal" ] ]; //Music $catalog[301] = [ "title" => "Beethoven: Complete Symphonies", "img" => "img/media/beethoven.jpg", "genre" => "Clasical", "format" => "CD", "year" => 2012, "category" => "Music", "artist" => "Ludwig van Beethoven" ]; $catalog[302] = [ "title" => "Elvis Forever", "img" => "img/media/elvis_presley.jpg", "genre" => "Rock", "format" => "Vinyl", "year" => 2015, "category" => "Music", "artist" => "Elvis Presley" ]; $catalog[303] = [ "title" => "No Fences", "img" => "img/media/garth_brooks.jpg", "genre" => "Country", "format" => "Cassette", "year" => 1990, "category" => "Music", "artist" => "Garth Brooks" ]; $catalog[304] = [ "title" => "The Very Thought of You", "img" => "img/media/nat_king_cole.jpg", "genre" => "Jaz", "format" => "MP3", "year" => 2008, "category" => "Music", "artist" => "Nat King Cole" ]; '''