Introduction: Your WordPress Swiss Army Knife
Let’s face it, plugins are fantastic, but having a clean, lean website means sometimes rolling up your sleeves and tweaking a few lines of code yourself. That’s where your theme’s functions.php file comes in. It’s like your Swiss army knife: compact, versatile, and incredibly powerful. Here are 10 essential functions.php snippets, ranked from helpful to absolutely game-changing, that’ll instantly enhance your WordPress site’s functionality.
Top 10 List Of functions.php Snippets
Here are the top WordPress functions.php snippets that’ll instantly upgrade your site’s performance and security.
Please note: Rocket Web Designer is not responsible for any damage caused to your website. Please make a copy of your current functions.php file before making changes.
10. Add Custom Dashboard Footer Text
Simplify your product pages for clarity.
// Customize admin footer text
function custom_admin_footer() {
echo 'Powered by YourCompanyName';
}
add_filter('admin_footer_text', 'custom_admin_footer');
9. Change WooCommerce “Add to Cart” Button Text
Tailor your WooCommerce button to your audience.
// Customize WooCommerce add-to-cart button text
function custom_woocommerce_button_text() {
return __('Buy Now!', 'woocommerce');
}
add_filter('woocommerce_product_single_add_to_cart_text', 'custom_woocommerce_button_text');
8. Remove WooCommerce Breadcrumbs
Simplify your product pages for clarity.
// Remove WooCommerce breadcrumbs
remove_action('woocommerce_before_main_content', 'woocommerce_breadcrumb', 20);
7. Redirect Users After Login
Customize where users land after logging in.
// Redirect users after login
function custom_login_redirect($redirect_to, $request, $user) {
return home_url('/custom-page/');
}
add_filter('login_redirect', 'custom_login_redirect', 10, 3);
6. Disable Emojis to Improve Performance
Cut unnecessary scripts for a performance boost.
// Disable emojis
remove_action('wp_head', 'print_emoji_detection_script', 7);
remove_action('admin_print_scripts', 'print_emoji_detection_script');
remove_action('wp_print_styles', 'print_emoji_styles');
remove_action('admin_print_styles', 'print_emoji_styles');
5. Protect Your Site by Blocking XML-RPC
Safeguard your site from potential security threats.
// Block XML-RPC method
add_filter('xmlrpc_enabled', '__return_false');
4. Remove Query Strings From Static Resources
Improve site performance and caching.
// Remove query strings from CSS and JS files
function remove_query_strings() {
if(!is_admin()) {
add_filter('script_loader_src', 'remove_query_strings_from_url', 9999);
add_filter('style_loader_src', 'remove_query_strings_from_url', 9999);
}
}
function remove_query_strings_from_url($src) {
$parts = explode('?', $src);
return $parts[0];
}
add_action('init', 'remove_query_strings');
3. Automatically Set Featured Image
Never worry about posts without featured images again.
// Auto-set featured image
function autoset_featured_image() {
global $post;
if (!has_post_thumbnail($post->ID)) {
$attached_image = get_children("post_parent=$post->ID&post_type=attachment&post_mime_type=image&numberposts=1");
if ($attached_image) {
foreach ($attached_image as $attachment_id => $attachment)
set_post_thumbnail($post->ID, $attachment_id);
}
}
}
add_action('the_post', 'autoset_featured_image');
2. Limit Post Revisions to Speed Up Database
Excessive post revisions can slow your site. Keep your database tidy.
// Limit post revisions
define('WP_POST_REVISIONS', 5);
Disable Gutenberg and Bring Back Classic Editor
Not a fan of Gutenberg? This snippet restores the beloved classic editor.
// Disable Gutenberg Editor
add_filter('use_block_editor_for_post', '__return_false');
Final Thoughts
Whether you’re optimizing speed, enhancing security, or just making WordPress easier to use, your functions.php file is a powerful tool that deserves more attention. Use it wisely, and your site will thank you, with better performance, a smoother user experience, and fewer headaches down the road. Implementing these WordPress functions.php snippets can significantly streamline your workflow. Need help or a custom snippet? Contact Rocket Web Designer today
Further Reading
Want to keep fine-tuning your WordPress skills with more info regarding functions.php snippets? Check out these resources:
Want to keep fine-tuning your WordPress skills with more info regarding functions.php snippets? Check out these resources:
WP Beginner – The Ultimate WordPress Snippet Collection
Kinsta – Top 30 Useful WordPress Snippets
WordPress Codex – Editing functions.php
Did You Know?
If you’re having trouble adding these functions.php snippets or customizing your site, our web design pros at Rocket Web Designer would love to help.
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