
	downloads \| documentation \| faq \| getting help \| mailing lists \| reporting bugs \| php.net sites \| links \| my php.net

search for in the

dio_tcsetattr	dio_write

	Last updated: Mon, 16 Jul 2012

dio_truncate

(PHP 4 >= 4.2.0, PECL)

dio_truncate -- Truncates file descriptor fd to offset bytes

说明

bool dio_truncate ( resource fd, int offset )

dio_truncate() truncates a file to at most offset bytes in size.

If the file previously was larger than this size, the extra data is lost. If the file previously was shorter, it is unspecified whether the file is left unchanged or is extended. In the latter case the extended part reads as zero bytes.

注: 本函数不适用于 Windows 平台。

参数

fd: The file descriptor returned by dio_open().
offset: The offset in bytes.

返回值

如果成功则返回 TRUE，失败则返回 FALSE。

dio_tcsetattr	dio_write

	Last updated: Mon, 16 Jul 2012

This unofficial mirror is operated at: http://manual.phpv.net/
Last updated: Thu Jul 7 19:13:47 2005 CST