_wp_admin_html_begin() │ WP 1.0

Prints out the beginning of the admin HTML header.

Internal function — this function is designed to be used by the kernel itself. It is not recommended to use this function in your code.

Hooks from the function

Return

null. Nothing (null).

Usage

_wp_admin_html_begin();

Notes

  • Global. true|false. $is_IE

_wp_admin_html_begin() code WP 6.5.2

wp-admin/includes/template.php 
<?php
function _wp_admin_html_begin() {
	global $is_IE;

	$admin_html_class = ( is_admin_bar_showing() ) ? 'wp-toolbar' : '';

	if ( $is_IE ) {
		header( 'X-UA-Compatible: IE=edge' );
	}

	?>
<!DOCTYPE html>
<html class="<?php echo $admin_html_class; ?>"
	<?php
	/**
	 * Fires inside the HTML tag in the admin header.
	 *
	 * @since 2.2.0
	 */
	do_action( 'admin_xml_ns' );

	language_attributes();
	?>
>
<head>
<meta http-equiv="Content-Type" content="<?php bloginfo( 'html_type' ); ?>; charset=<?php echo get_option( 'blog_charset' ); ?>" />
	<?php
}