Customizable Additional Excerpt In Wordpress ( USAGE: limit_content( $length, $allow-tags, '$tags-to-allow' ) )

Customizable Additional Excerpt

//Custom Additional Excerpt Length
function custom_excerpt($content_length = 250, $allowtags = true, $allowedtags = '') {
    global $post;
  $exc = $post->post_excerpt;
	if ($exc == '') {
		$content = $post->post_content;
	} else {
    $content = $post->post_excerpt;
	}
    $content = apply_filters('the_content', $content);
    if (!$allowtags){
        $allowedtags .= '<style>';
        $content = strip_tags($content, $allowedtags);
    }
    $wordarray = explode(' ', $content, $content_length + 1);
    if(count($wordarray) > $content_length) {
        array_pop($wordarray);
        array_push($wordarray, '');
        $content = implode(' ', $wordarray);
        $content .= "</p>";
    }
    echo $content;
}