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/WordPress

settings_fields( string $option_group )

Output nonce, action, and option_page fields for a settings page.

Parameters

$option_group

(string) (Required) A settings group name. This should match the group name used in register_setting().

Source

File: wp-admin/includes/plugin.php 

function settings_fields( $option_group ) {
	echo "<input type='hidden' name='option_page' value='" . esc_attr( $option_group ) . "' />";
	echo '<input type="hidden" name="action" value="update" />';
	wp_nonce_field( "$option_group-options" );
}

Uses

Uses Description
wp-includes/formatting.php: esc_attr()

Escaping for HTML attributes.
wp-includes/functions.php: wp_nonce_field()

Retrieve or display nonce hidden field for forms.

Changelog

Version Description
2.7.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/settings_fields