strrchr excerpt

inc/template.php

@@ -17,15 +17,40 @@ function dw_page_desc() {
 	global $post; 
 	$post = get_post( $post );
 	setup_postdata( $post );
-	$excerpt = get_the_excerpt();
+	$excerpt = dw_good_excerpt(115);
 	if (is_single()||is_page()){
 		if (get_post_meta($post->ID, "meta-desc", true) !='' ) 
 			echo get_post_meta($post->ID, "meta-desc", true); 
-		else echo substr(get_the_excerpt(), 0,60);;
+		else echo $excerpt;
 	}
 }
 endif;
 
+if ( ! function_exists( 'dw_good_excerpt') ) :
+function dw_good_excerpt($length) { 
+	global $post;
+	$text = $post->post_excerpt;
+	if ( '' == $text ) {
+		$text = get_the_content('');
+		$text = apply_filters('the_content', $text);
+		$text = str_replace(']]>', ']]>', $text);
+	}
+	$text = strip_shortcodes($text);
+	$text = strip_tags($text);
+	$text = substr($text,0,$length);
+	$allowed_end = array('.', '!', '?', '...');
+	$excerpt = reverse_strrchr($text, '.', 1);
+	if( $excerpt ) {
+		echo apply_filters('get_the_excerpt',$excerpt);
+	} else {
+		echo apply_filters('get_the_excerpt',$text);
+	}
+}
+function reverse_strrchr($haystack, $needle, $trail) {
+    return strrpos($haystack, $needle) ? substr($haystack, 0, strrpos($haystack, $needle) + $trail) : false;
+}
+endif;
+
 if ( ! function_exists( 'dw_excerpt') ) :
 function dw_excerpt($count){
 	$permalink = get_permalink($post->ID);