Do you know what's wrong with this php?

Okay, everything was working fine till I deleted php which moved the position of a search bar. Now everything is messed up. Right now I can not access my site when I do it says:

If you look at my site you can see that the author bio is acting weird and so is other codings.

Can someone please help?

<?php

<div class="postauthor">
<?php echo get_avatar( get_the_author_id() , 100 ); ?>
<h4>Article by <a href="<?php the_author_url(); ?>">
<?php the_author_firstname(); ?> <?php the_author_lastname(); ?></a></h4>
<p><?php the_author_description(); ?></p>
<p class="hlight"><?php the_author_firstname(); ?> has written <span><?php the_author_posts(); ?></span> awesome articles for us.</p>
</div>

<div id="similar">
<h3>You May Also Be Interested In...</h3>
<p> <?php similar_posts(); ?> </p>
</div>

<div id="rightcol">
<div id="subscribe">
<h3>Stay Connected!</h3>
<p>If you enjoyed this post, you will definitely enjoy our others. Subscribe to the feed to get instantly updated our next posts. Subscribe and learn how to make money online!</p>
<ul>
<li><a href="feed">Subscribe to our RSS Feed</a></li>
<li><a href="http://feedburner.google.com/fb/a/mailverify?uri=webjourney/oUfK&amp;loc=en_US">Subscribe for Email Updates</a></li>

<li><a href="twitter">Follow Us on Twitter</a></li>
</ul>
</div>

<div id="custom">
<h3>Best of Web Journey</h3>
<p>Want to take your blog or website to the next level? Want to seriously make money online? The best posts or web journey will get you one step closer.</p>
</div>
</div>
?>

<?php

add_action('thesis_hook_after_post_box', 'post_footer');

function asnioFooter() { ?>
<div id="container">
<div id="foot">
<h5>Blog Categories</h5>
<span class="cat">Information Covered on Web Journey</span>
<ul id="cats">
<?php wp_list_cats('sort_column=id&hide_empty=0&optioncount=0&hierarchical=0'); ?>
</ul>

<div class="col Footer1">
<ul class="sidebar_list">
<?php if (!function_exists('dynamic_sidebar') || !dynamic_sidebar('Footer 1') ){ ?>
<li class="widget">
<div class="widget_box">
<h3><?php _e('Footer Widget 1', 'thesis'); ?></h3>
<p>You can edit the content that appears here by visiting your Widgets panel and modifying the <em>current widgets</em> there.</p>
</div>
</li>
<? } ?>
</ul>
</div>

<div class="col Footer2">
<ul class="sidebar_list">
<?php if (!function_exists('dynamic_sidebar') || !dynamic_sidebar('Footer 2') ) { ?>
<li class="widget">
<div class="widget_box">
<h3><?php _e('Footer Widget 2', 'thesis'); ?></h3>
<p>You can edit the content that appears here by visiting your Widgets panel and modifying the <em>current widgets</em> there.</p>
</div>
</li>
<? } ?>
</ul>
</div>

<div class="col Footer3">
<ul class="sidebar_list">
<?php if (!function_exists('dynamic_sidebar') || !dynamic_sidebar('Footer 3') ) { ?>
<li class="widget">
<div class="widget_box">
<h3><?php _e('Footer Widget 3', 'thesis'); ?></h3> <p>You can edit the content that appears here by visiting your Widgets panel and modifying the <em>current widgets</em> there.</p>
</div>
</li>
<? } ?>
</ul>
</div>

<div id="copyright">
<ul class="sidebar_list">
<?php if (!function_exists('dynamic_sidebar') || !dynamic_sidebar('Footer Copyright') ) { ?>
<li class="widget">
<div class="widget_box">
<h3><?php _e('Copyright', 'thesis'); ?></h3> <p>You can edit the content that appears here by visiting your Widgets panel and modifying the <em>current widgets</em> there.</p>
</div>
</li>
<? } ?>
</ul>
<!-- Please do not remove these lines. If you have a developers license, you may remove the thesis copyright, but do not remove the Asnio copyright unless you have paid the $5 fee. Feel free to remove these comment lines however -->
<p>Get smart with the <a href="http://diythemes.com/thesis/">Thesis WordPress Theme</a> from DIYthemes.</p>
<p>Footer by <a href="http://asnio.com/">Asnio</a>.</p>
</div>
</div>
</div>
<? }
add_action('thesis_hook_after_html', 'asnioFooter');
remove_action('thesis_hook_footer', 'thesis_attribution');
remove_action('thesis_hook_footer', 'thesis_admin_link');

register_sidebar(array('name'=>'Footer 1', 'before_title'=>'<h3>', 'after_title'=>'</h3>'));
register_sidebar(array('name'=>'Footer 2', 'before_title'=>'<h3>', 'after_title'=>'</h3>'));
register_sidebar(array('name'=>'Footer 3', 'before_title'=>'<h3>', 'after_title'=>'</h3>'));
register_sidebar(array('name'=>'Footer Copyright', 'before_title'=>'<h3>', 'after_title'=>'</h3>'));

function custom_bookmark_links() {
global $post;
?>
<ul class="bookmark_links">
<li><a rel="nofollow" href="http://delicious.com/save?url=<?php urlencode(the_permalink()); ?>&amp;title=<?php urlencode(the_title()); ?>" onclick="window.open('http://delicious.com/save?v=5&amp;noui&amp;jump=close&amp;url=<?php urlencode(the_permalink()); ?>&amp;title=<?php urlencode(the_title()); ?>', 'delicious', 'toolbar=no,width=550,height=550'); return false;" title="Bookmark this post on del.icio.us">Bookmark this article on Delicious</a></li>
</ul>
<?
}

 

Remove the first <?php from the top of the script.

 

<div class="postauthor">
<?php echo get_avatar( get_the_author_id() , 100 ); ?>
<h4>Article by <a href="<?php the_author_url(); ?>">
<?php the_author_firstname(); ?> <?php the_author_lastname(); ?></a></h4>
<p><?php the_author_description(); ?></p>
<p class="hlight"><?php the_author_firstname(); ?> has written <span><?php the_author_posts(); ?></span> awesome articles for us.</p>
</div>

<div id="similar">
<h3>You May Also Be Interested In...</h3>
<p> <?php similar_posts(); ?> </p>
</div>

<div id="rightcol">
<div id="subscribe">
<h3>Stay Connected!</h3>
<p>If you enjoyed this post, you will definitely enjoy our others. Subscribe to the feed to get instantly updated our next posts. Subscribe and learn how to make money online!</p>
<ul>
<li><a href="feed">Subscribe to our RSS Feed</a></li>
<li><a href="http://feedburner.google.com/fb/a/mailverify?uri=webjourney/oUfK&amp;loc=en_US">Subscribe for Email Updates</a></li>

<li><a href="twitter">Follow Us on Twitter</a></li>
</ul>
</div>

<div id="custom">
<h3>Best of Web Journey</h3>
<p>Want to take your blog or website to the next level? Want to seriously make money online? The best posts or web journey will get you one step closer.</p>
</div>
</div>

Code (markup):

and you should use any templete engine to merge php in html easy
choose on of this page

http://www.jooria.com/scripts/PHP-Templates-Engine-118/

Code (markup):