wp_not_installed() │ WP 3.0.0

Redirects to the installer if WordPress is not installed.

Dies with an error message when Multisite is enabled.

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

No Hooks.

Returns

null. Nothing (null).

Usage

wp_not_installed();

Changelog

Since 3.0.0 Introduced.

wp_not_installed() code WP 7.0

wp-includes/load.php 
function wp_not_installed() {
	if ( is_blog_installed() || wp_installing() ) {
		return;
	}

	nocache_headers();

	if ( is_multisite() ) {
		wp_die( __( 'The site you have requested is not installed properly. Please contact the system administrator.' ) );
	}

	require ABSPATH . WPINC . '/kses.php';
	require ABSPATH . WPINC . '/pluggable.php';

	$link = wp_guess_url() . '/wp-admin/install.php';

	wp_redirect( $link );
	die();
}