_wp_check_alternate_file_names() WordPress Function

The wp_check_alternate_file_names() function is used to check if a given file name is available for use on the current WordPress installation. This function is useful when you want to ensure that a file name is unique before using it for a new attachment or other file.

_wp_check_alternate_file_names( string[] $filenames, string $dir, array $files ) #

function _wp_check_alternate_file_names( $filenames, $dir, $files ) {
	foreach ( $filenames as $filename ) {
		if ( file_exists( $dir . $filename ) ) {
			return true;
		}

		if ( ! empty( $files ) && _wp_check_existing_file_names( $filename, $files ) ) {
			return true;
		}
	}

	return false;
}