WP_CLI

Runner::check_wp_version │ private │ WP-CLI 1.0

Method of the class: Runner{}

No Hooks.

Returns

null. Nothing (null).

Usage

// private - for code of main (parent) class only
$result = $this->check_wp_version();

Runner::check_wp_version() code WP-CLI 2.13.0-alpha

wp-cli/php/WP_CLI/Runner.php 
private function check_wp_version() {
	$wp_exists      = $this->wp_exists();
	$wp_is_readable = $this->wp_is_readable();
	if ( ! $wp_exists || ! $wp_is_readable ) {
		$this->show_synopsis_if_composite_command();
		// If the command doesn't exist use as error.
		$args                   = $this->cmd_starts_with( [ 'help' ] ) ? array_slice( $this->arguments, 1 ) : $this->arguments;
		$suggestion_or_disabled = $this->find_command_to_run( $args );
		if ( is_string( $suggestion_or_disabled ) ) {
			if ( ! preg_match( '/disabled from the config file.$/', $suggestion_or_disabled ) ) {
				WP_CLI::warning( "No WordPress installation found. If the command '" . implode( ' ', $args ) . "' is in a plugin or theme, pass --path=`path/to/wordpress`." );
			}
			WP_CLI::error( $suggestion_or_disabled );
		}

		if ( $wp_exists && ! $wp_is_readable ) {
			WP_CLI::error(
				'It seems, the WordPress core files do not have the proper file permissions.'
			);
		}
		WP_CLI::error(
			"This does not seem to be a WordPress installation.\n" .
			'The used path is: ' . ABSPATH . "\n" .
			'Pass --path=`path/to/wordpress` or run `wp core download`.'
		);
	}

	global $wp_version;
	include ABSPATH . 'wp-includes/version.php';

	$minimum_version = '3.7';

	if ( version_compare( $wp_version, $minimum_version, '<' ) ) {
		WP_CLI::error(
			"WP-CLI needs WordPress $minimum_version or later to work properly. " .
			"The version currently installed is $wp_version.\n" .
			'Try running `wp core download --force`.'
		);
	}
}