February 11, 2011 
Definition:
function add_settings_field($id, $title, $callback, $page, $section = 'default', $args = array() {}
Add a new field to a section of a settings page
Part of the Settings API. Use this to define a settings field that will show as part of a settings section inside a settings page. The fields are shown using do_settings_fields() in do_settings-sections()
Parameters
- string $id: Slug-name to identify the field. Used in the ‘id’ attribute of tags.
- string $title: Formatted title of the field. Shown as the label for the field during output.
- string $callback: Function that fills the field with the desired form inputs. The function should echo its output.
- string $page: The slug-name of the settings page on which to show the section (general, reading, writing, …).
- string $section: The slug-name of the section of the settings page in which to show the box (default, …).
- array $args: Additional arguments
Source code
function add_settings_field($id, $title, $callback, $page, $section = 'default', $args = array()) {
global $wp_settings_fields;
if ( 'misc' == $page ) {
_deprecated_argument( __FUNCTION__, '3.0', __( 'The miscellaneous options group has been removed. Use another settings group.' ) );
$page = 'general';
}
if ( !isset($wp_settings_fields) )
$wp_settings_fields = array();
if ( !isset($wp_settings_fields[$page]) )
$wp_settings_fields[$page] = array();
if ( !isset($wp_settings_fields[$page][$section]) )
$wp_settings_fields[$page][$section] = array();
$wp_settings_fields[$page][$section][$id] = array('id' => $id, 'title' => $title, 'callback' => $callback, 'args' => $args);
}
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