wp_normalize_path( string $path ): string

2186function wp_normalize_path( $path ) {2187	$wrapper = '';2188 2189	if ( wp_is_stream( $path ) ) {2190		list( $wrapper, $path ) = explode( '://', $path, 2 );2191 2192		$wrapper .= '://';2193	}2194 2195	// Standardize all paths to use '/'.2196	$path = str_replace( '\\', '/', $path );2197 2198	// Replace multiple slashes down to a singular, allowing for network shares having two slashes.2199	$path = preg_replace( '|(?<=.)/+|', '/', $path );2200 2201	// Windows paths should uppercase the drive letter.2202	if ( ':' === substr( $path, 1, 1 ) ) {2203		$path = ucfirst( $path );2204	}2205 2206	return $wrapper . $path;2207}