To add custom fields under WordPress general settings without hacking core code, use the below example. Here’s how to add custom field under WordPress general settings page.

add_filter('admin_init', 'register_my_general_settings_fields');
function register_my_general_settings_fields()
{
register_setting('general', 'custom_field', 'esc_attr');
add_settings_field('custom_field', '<label for="custom_field">'.__('Custom Field' , 'custom_field' ).'</label>' , 'general_settings_custom_fields_html', 'general');
}

function general_settings_custom_fields_html()
{
$value = get_option( 'custom_field', '' );
echo '<input type="text" id="custom_field" name="custom_field" value="' . $value . '" />';
}

Please let me know, If you have any queries or feedback.

Sidebars allow you display widgets inside your theme. In this post, we will teach you the way to create sidebar and display that sidebar in your theme.

First thing you need to do is register the sidebar or widget area. So copy the below code and paste in your functions.php file. Once you registered the sidebar, It will be displayed in your Appearance => Widget screen in the backend.(WP admin).

function register_sidebar_widget() {
     register_sidebar( array(
        'name' =>__( 'Sidebar', 'wpb'),
        'id' => 'sidebar',
        'description' => __( 'Appears on the static front page template', 'wpb' ),
        'before_widget' => '<aside id="%1$s" class="widget %2$s">',
        'after_widget' => '</aside>',
        'before_title' => '<h3 class="widget-title">',
        'after_title' => '</h3>',
) );
}
add_action( 'widgets_init', 'register_sidebar_widget' );

Now You need to copy and paste the below code in your template files to display the sidebar.

<?php if ( is_active_sidebar( 'sidebar' ) ) : ?>
<div id="secondary" class="widget-area" role="complementary">
<?php dynamic_sidebar( 'sidebar' ); ?>
</div>
<?php endif; ?>

In this example codes, we have registered and displayed the widget are in template files.

Please let me know, If you have any queries or feedback.

There are 11 table in WordPress, they are

• wp_options
• wp_users
• wp_links
• wp_commentmeta
• wp_term_relationships
• wp_postmeta
• wp_posts
• wp_term_taxonomy
• wp_usermeta
• wp_terms
• wp_comments

There are 3 ways to install WordPress Plugins. They are listed below.

1. Search and install
2. Upload and install
3. FTP

By default, wp-login.php file having all the codes to generate login page. There are 5 steps to hide/change WordPress login URL without plugin.

1. Create a new file.
2. Copy the code from your wp-login.php, then paste it into your new file.
3. Replace each instance of wp-login.php with the new file name. Find and replace is your friend.
4. Delete the wp-login.php file.
5. Login through your new URL.

Please let me know, If you have any queries or feedback.

By default WordPress having an function called count_users() to get count of users having each role, as well as the count of all users.
Check below example code for your reference.

$result = count_users();
echo 'There are ', $result['total_users'], ' total users';
foreach($result['avail_roles'] as $role => $count)
    echo ', ', $count, ' are ', $role, 's';
echo '.';

Please feel free to contact me if you need any further information.

To disable email notification after password change, Add the following code in your theme file or plugin files.

/* To disable email notification after password change */
add_filter( 'send_password_change_email', '__return_false' );

Please feel free to contact me if you need any further information.

By default WordPress having an function called get_cat_ID() to retrieve get category ID from category name. Please check the below sample code for how to get category ID from category name in WordPress. Replace ‘Category Name’ with your category name.

$categoryID = get_cat_ID('Category Name');

If you have any doubt, Please comment here.

We can retrieve list of all sites in WordPress Multisite Network by using get_sites() function.
This function will return the data in array format. Please check the sample code below.

$sites = get_sites();
var_dump($sites);

If you have any doubt, Please comment here.