然而，出于兼容性考虑，如果编码没有被指定，那么默认平台所使用的编码。
However, for compatibility reasons, if an encoding is not specified, then the default encoding of the platform is used.
在目前版本中，该方法始终返回一个空枚举，保留该方法仅出于兼容性考虑。
In this version, this method always returns an empty Enumeration and remains only to preserve binary compatibility.
这个设置是在PHPv5中引入的(考虑到向后兼容性)，但出于性能考虑，php团队建议关闭它。
This setting was introduced in PHP V5 - presumably for backward-compatibility - and the PHP folks recommend turning it off for performance reasons.
出于兼容性的考虑，文件按读写方式打开文件会引发一条警告而非一条错误。
For compatibility reasons, a file opened for both reading and writing will result in a warning but not an error.
出于兼容性的考虑，文件按读写方式打开文件会引发一条警告而非一条错误。
For compatibility reasons, a file opened for both reading and writing will result in a warning but not an error.
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