Strips out junk HTML from WP posts once imported from Blogger

strip.php

$args = array( 'numberposts' => '150' );
	$recent_posts = wp_get_recent_posts( $args );
	foreach( $recent_posts as $recent ){
      
$post = get_post($recent["ID"]);
$content = apply_filters('the_content', $post->post_content);
$content = strip_tags($content,"<p><br><a><img><ul><li>");
$content = str_replace('style="clear: left; float: left; margin-bottom: 1em; margin-right: 1em;"',"",$content);
$content = str_replace('style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"',"",$content);
$content = str_replace('border="0"',"",$content);
  $my_post = array(
      'ID'           => $recent["ID"],
      'post_content' => $content,
  );

// Update the post into the database
  wp_update_post( $my_post );

   }