How extract data from html using php - php

Question

I have fetch this html code.
<td valign="top" style="padding:3px">
<p>
<b>Release Year: </b>2005
<br />
<b>
Genre:
<a href=/genres/Animation>Animation</a>,
<a href=/genres/Comedy>Comedy</a>
</b>
<br />
<b>External Links: </b>
IMDB
<br />
<b>No. of episodes: </b> 23 episodes
<br />
<b>Latest Episode With Links: </b>
<a title="Watch American Dad! Latest Episode (American Dad! Season 1 Episode 23)" href="/episode/american_dad_s1_e23.html">
Season 1 Episode 23 Tears of a Clooney (14/05/2006)
</a>
<br />
<div style="float: left; height: 30px; overflow: hidden; width: 100px;">
<div class="fb-like" data-href="http://watchseries.ag/season-1/american_dad" data-send="false" data-layout="button_count" data-show-faces="false"></div>
</div>
Tweet
<script>!function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0],p=/^http:/.test(d.location)?'http':'https';if(!d.getElementById(id)){js=d.createElement(s);js.id=id;js.src=p+'://platform.twitter.com/widgets.js';fjs.parentNode.insertBefore(js,fjs);}}(document, 'script', 'twitter-wjs');</script>
<br clear="all" />
<b>Description :</b> The random escapades of Stan Smith, an extreme right wing CIA agent dealing with family life and keeping America safe, all in the most absurd way possible.<br>
</p>
</td>
I want only this information from above html code using php.
Only want 3 things
1.Release Year
2. Imdb Link
3. Genre
array(
'release_year'=>2005,
'imbd_link'=>'http://www.imdb.com/title/tt0397306/',
'genre'=> array(
'Animation',
'Comedy',
)
);
I have also created php function which filter html code and return me array but its not give the result like above i showed the array() its give me this result
Output
Array
(
[release year] => 2005Genre
)
function
function do_html_array($td,$dlm='<br>'){
if(!empty($td)){
$td = html_entity_decode($td);
$td = preg_replace('/<script\b[^>]*>(.*?)<\/script>/is', "", $td);
$html_array = explode($dlm,$td);
$html_key_array = array();
foreach($html_array as $key=>$html){
$html = explode(':',trim(strip_tags($html)));
if(trim($html[0])!=''){
if(count($html)<1) $html[1] = '';
if(strtolower(trim($html[0]))=='description') $html[1] = str_ireplace('[+]more','',$html[1]);
$html_key_array[strtolower(trim($html[0]))] = trim($html[1]);
switch(trim(strtolower($html[0]))){
case'external links':
preg_match_all('~<a\s+.*?</a>~is',$html_array[$key],$html_key_array['imdb_link']);
break;
case'genre':
preg_match_all('~<a\s+.*?</a>~is',$html_array[$key],$html_key_array['genre_link']);
break;
// further define here...
}
}
}
return $html_key_array;
}
return false;
}