PHP Datetime转换负ISO8601日期失败

将负日期转换为DateTime get me false

测试代码

var_dump('DateTime::createFromFormat('DateTime::ISO8601, '-0001-11-30T00:00:00+0100'));

结果

boolean false

预期的结果

object(DateTime)[5]
  public 'date' => string '-0001-11-30 00:00:00' (length=20)
  public 'timezone_type' => int 1
  public 'timezone' => string '+01:00' (length=6)

(或类似)

注:使用$d->format('DateTime::ISO8601);

创建负日期字符串PHP版本PHP 5.4.28

 public string DateTime::format ( string $format )

$format
Format accepted by date().

$d->format('DateTime::ISO8601);

$d->format("c")

$d->format("c");