Category: PHP

How to add custom field under WordPress general settings

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.

How to add Custom Sidebars or Widget Area in WordPress

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.

What is Constructors and Destructors?

CONSTRUCTOR : PHP allows developers to declare constructor methods for classes. Classes which have a constructor method call this method on each newly-created object, so it is suitable for any initialization that the object may need before it is used.
DESTRUCTORS : PHP 5 introduces a destructor concept similar to that of other object-oriented languages, such as C++. The destructor method will be called as soon as all references to a particular object are removed or when the object is explicitly destroyed or in any order in shutdown sequence.

How to hide/change WordPress login URL without plugin?

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.

How to get count of users having each role, as well as the count of all users?

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.