Auto-Generate Excerpt from Post Content

<?php
add_filter( 'the_excerpt', 'scseed_auto_generate_excerpt' );
function scseed_auto_generate_excerpt( $excerpt ) {
    global $post;
    if ( ! empty( trim( $excerpt ) ) || empty( $post ) ) {
        return $excerpt;
    }
    $scseed_word_limit = 30; // Adjust word count as needed

    $content = get_post_field( 'post_content', $post->ID );
    $content = strip_shortcodes( $content );
    $content = wp_strip_all_tags( $content );
    $content = preg_replace( '/s+/', ' ', trim( $content ) );

    $words = explode( ' ', $content );
    if ( count( $words ) <= $scseed_word_limit ) {
        return $content;
    }
    return implode( ' ', array_slice( $words, 0, $scseed_word_limit ) ) . '&hellip;';
}