WP_CLI\Utils

wp_not_installed() │ WP-CLI 1.0

No Hooks.

Return

null. Nothing (null).

Usage

wp_not_installed();

wp_not_installed() code WP-CLI 2.8.0-alpha

wp-cli/php/utils-wp.php 
function wp_not_installed() {
	global $wpdb, $table_prefix;
	if ( ! is_blog_installed() && ! defined( 'WP_INSTALLING' ) ) {
		$tables         = $wpdb->get_col( "SHOW TABLES LIKE '%_options'" );
		$found_prefixes = [];
		if ( count( $tables ) ) {
			foreach ( $tables as $table ) {
				$maybe_prefix = substr( $table, 0, - strlen( 'options' ) );
				if ( $maybe_prefix !== $table_prefix ) {
					$found_prefixes[] = $maybe_prefix;
				}
			}
		}
		if ( count( $found_prefixes ) ) {
			$prefix_list   = implode( ', ', $found_prefixes );
			$install_label = count( $found_prefixes ) > 1 ? 'installations' : 'installation';
			WP_CLI::error(
				"The site you have requested is not installed.\n" .
				"Your table prefix is '{$table_prefix}'. Found {$install_label} with table prefix: {$prefix_list}.\n" .
				'Or, run `wp core install` to create database tables.'
			);
		} else {
			WP_CLI::error(
				"The site you have requested is not installed.\n" .
				'Run `wp core install` to create database tables.'
			);
		}
	}
}