Excluding image and video content from recent Tumblr posts script?

[charliebobgordon]

I've setup a PHP script at the bottom of my homepage on this website. It will grab the three most recent text posts from my blog and display a summary. It's setup to check for updated content every hour (cache).

http://charlieswebsites.co.uk/fearofmobs/site

 

It works good, but how can I make sure that it only ever returns <p> tags? Sometimes video iframes are embedded and images at the beggining of posts, and as you can see it posts those. I only want textual content returned.

 

The script in use is:

 

<?php
$cachefile_blog = 'blogposts.txt';

$cache_timer = 3600 + @filemtime($cachefile_blog);// files timestamp + 3600 seconds

if (file_exists($cachefile_blog) && time() < $cache_timer ) {
// do nothing if file is fresh
}
else 
{

// go get latest results
$data = file_get_contents("http://blog.fearofmobs.com/api/read?type=post&type=post&num=3");

// overwrite the cached file with new data
$fh = fopen($cachefile_blog, 'w') or die("can't open file");
fwrite($fh, $data);
fclose($fh);
}

// read the cached file
$request_url = file_get_contents($cachefile_blog);
$xml = simplexml_load_string($request_url);

///simplexml_load_string --- for local files
///simplexml_load_file --- for URLS

$cpost = $_GET["post"];
$tumblename = 'fearofmobs';
if (is_numeric($cpost)){
$request_url = 'http://' . $tumblename . '.tumblr.com/api/read?id=' . $cpost;
$xml = simplexml_load_file($request_url);
if($xml ===  FALSE){
}
else {
foreach ($xml->posts->post as $post) {
}}}
else {
$request_url = 'http://' . $tumblename . '.tumblr.com/api/read?num=3&type=post';
$xml = simplexml_load_file($request_url);
foreach ($xml->posts->post as $post) {
$title = $post->{'regular-title'};
$body = $post->{'regular-body'};
$aname = $post['id'];
$tlink = 'http://' . $tumblename . '.tumblr.com/' . $post['id'];
$small_post = substr($body,0,132);
echo '<div class="post"><a href="'.$tlink.'"><h4 class="post_title">'.$title.'</h4></a>'.$small_post.'…</p><span class="post_link"><a href="'.$tlink.'">Continue reading »</a></span></div>';
}
}

?>';
}
}

?>