Only show on home page

Hi everyone. I think this would be really easy for someone with php knowledge.

I would like the following to only display on the homepage. I have attempted to wrap the… <?php if ( is_home() ) { ?> content <?php endif; ?> …but it gives an error message in my sidebar.
Here’s the code and thanks in advance!

<?php
// this is where you enter the IDs of which categories you want to display
$display_categories = array(11);
foreach ($display_categories as $category) { ?>
<div id=”sidebar_header”> </div><div id=”sidebar_gig”>
<?php query_posts(“showposts=10&cat=$category”);
$wp_query->is_category = false;
$wp_query->is_archive = false;
$wp_query->is_home = true;
?>

<h3>“><?php
// this is where the name of each category gets printed
single_cat_title(); ?></h3><div class=”sub_text”>This week’s gigs ¬</div>
<?php while (have_posts()) : the_post(); ?>

” rel=”bookmark” class=”title”>

• <?php
  // this is where title of the article gets printed
  the_title(); ?>»

<?php the_excerpt(); ?>
” rel=”bookmark” title=”Permanent Link to <?php the_title(); ?>”>More»
<?php endwhile; ?>

</div>
<div id=”sidebar_footer”>
<div class=”icons”><!– AddThis Button BEGIN –>
<?php echo “<div>
<script type=\”text/javascript\”>
var addthis_pub=\”strutter27\”;
var addthis_logo = ‘https://www.boxadesign.co.uk/thejoycollective/wp-content/themes/mimbo2.2/images/joy_logo.gif&#8217;;
var addthis_brand = ‘The Joy Collective’;
</script>
<img src=\”https://s7.addthis.com/static/btn/sm-plus.gif\” width=\”16\” height=\”16\” alt=\”Bookmark and Share\” style=\”border:0\”/><script type=\”text/javascript\” src=\”https://s7.addthis.com/js/200/addthis_widget.js\”></script></div>”; ?>
<!– AddThis Button END –></div>
<div class=”footnote”>“>view all gigs</div>
</div>

<?php } ?>