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function is not described

allow_subdirectory_install() WP 3.0.0

Allow subdirectory installation.

Hooks from the function

Return

true|false. Whether subdirectory installation is allowed

Usage

allow_subdirectory_install();

Notes

  • Global. wpdb. $wpdb WordPress database abstraction object.

Changelog

Since 3.0.0 Introduced.

Code of allow_subdirectory_install() WP 5.8.2

function allow_subdirectory_install() {
	global $wpdb;

	/**
	 * Filters whether to enable the subdirectory installation feature in Multisite.
	 *
	 * @since 3.0.0
	 *
	 * @param bool $allow Whether to enable the subdirectory installation feature in Multisite.
	 *                    Default false.
	 */
	if ( apply_filters( 'allow_subdirectory_install', false ) ) {
		return true;
	}

	if ( defined( 'ALLOW_SUBDIRECTORY_INSTALL' ) && ALLOW_SUBDIRECTORY_INSTALL ) {
		return true;
	}

	$post = $wpdb->get_row( "SELECT ID FROM $wpdb->posts WHERE post_date < DATE_SUB(NOW(), INTERVAL 1 MONTH) AND post_status = 'publish'" );
	if ( empty( $post ) ) {
		return true;
	}

	return false;
}