(SEO) Create Meta Description From Content

automatic-meta-description.txt

This creates a custom SEO function for meta description.
The function automatically create (155 words) Meta Description From Content.
 

functions.php

function create_meta_desc() {
    global $post;
if (!is_single()) { return; }
    $meta = strip_tags($post->post_content);
    $meta = strip_shortcodes($meta);
    $meta = str_replace(array("\n", "\r", "\t"), ' ', $meta);
    $meta = substr($meta, 0, 155);
    echo "<meta name='description' content='$meta' />";
}
add_action('wp_head', 'create_meta_desc');