WordPress at a glance
function is not described

allow_subdirectory_install() WP 3.0.0

Allow subdirectory installation.

  • Global. wpdb. $wpdb WordPress database abstraction object.
Hooks in function
Return

true/false. Whether subdirectory installation is allowed

Usage

allow_subdirectory_install();

Code of allow subdirectory install: wp-admin/includes/network.php VER 5.0.3

<?php
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 is 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;
}