How to Hide Meta Elements in WordPress Posts Easily

Code

<?php
// Function to remove post meta data from WordPress posts
function wp_dudecom_remove_post_meta() {
    // Remove meta data from the post content
    add_filter('the_content', 'wp_dudecom_filter_post_meta', 20);
}

// Callback function to filter out meta data
function wp_dudecom_filter_post_meta($content) {
    // Use regular expressions to remove meta data
    $content = preg_replace('/<div class="post-meta">.*?<\/div>/s', '', $content);
    return $content;
}

// Hook the function to WordPress
add_action('init', 'wp_dudecom_remove_post_meta');

// Function to hide custom meta boxes in the WordPress admin
function wp_dudecom_hide_custom_meta_boxes() {
    // Remove specific meta boxes from the post editing screen
    remove_meta_box('postcustom', 'post', 'normal'); // Custom Fields
    remove_meta_box('commentstatusdiv', 'post', 'normal'); // Comments Status
    remove_meta_box('commentsdiv', 'post', 'normal'); // Comments
    remove_meta_box('authordiv', 'post', 'normal'); // Author
}

// Hook the function to the admin menu
add_action('admin_menu', 'wp_dudecom_hide_custom_meta_boxes');
?>