Create A Settings Field - mdhemalakhand1999/WordPressPluginDevelopment GitHub Wiki

1. Create A Settings Field
   

   Let’s create a settings field in our general page ( settings→general )

we will use ‘admin_init’ hook for create our custom settings field.

ok.

So! for create a settings field We will use add_settings_field(id, title, callback, page) method.

After create settings field, then we need register these settings. So we will use register_setting(option_group, option_name, args)

Now we will display our form using callback ( which we was initialized on add_settings_field.

function ptc_admin_init() {
    add_settings_field('pqrc_height', __("Height"), 'pqrc_display_height', 'general');
    add_settings_field('pqrc_width', __("Width"), 'pqrc_display_width', 'general');
register_setting(‘general’, ‘pqrc_height’, array(‘sanitize_callback’ => ‘esc_attr’));
register_setting(‘general’, ‘pqrc_width’, array(‘sanitize_callback’ => ‘esc_attr’));
}
function pqrc_display_height() {

    $height = get_option(“pqrc_height”);

    printf(“”, $height, ‘pqrc_height’, ‘pqrc_height’);

}

function pqrc_display_width() {

    $width = get_option(“pqrc_width”);

    printf(“”, $width, ‘pqrc_width’, ‘pqrc_width’);

}

add_action(“admin_init”, “ptc_admin_init”);

1. Retrieve data from settings field.
   

   Now, to retrieve our data we will use get_option() method.

   
   

   here is code:

   
   

   
   $height = get_option('pqrc_height');
   $width = get_option('pqrc_width');
   $height = $height ? $height: 150;
   $width = $width ? $width: 150;
   $qr_code_dimension = apply_filters("atc_qr_code_dimension", "{$height}x{$width}");
   </pre>

1. Congratulation
   

   Thats it. Congratulation for create your first settings field!

   
   Happy Coading