(バージョン情報なし。おそらく SVN 版にしか存在しないでしょう)
Error::__construct — Construct the error object
$message = ""
   [, int $code = 0
   [, Throwable $previous = NULL
  ]]] )Constructs the Error.
messageThe error message.
codeThe error code.
previousThe previous throwable used for the exception chaining.
注意:
The
messageis NOT binary safe.