dio_truncate

(PHP 4 >= 4.2.0, PHP 5 < 5.1.0)

dio_truncate — Truncates file descriptor fd to offset bytes

说锟斤拷

dio_truncate ( resource $fd , int $offset ) : bool

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.

锟斤拷锟斤拷

fd

The file descriptor returned by dio_open().

offset

The offset in bytes.

锟斤拷锟斤拷值

锟缴癸拷时锟斤拷锟斤拷 TRUE锟斤拷 锟斤拷锟斤拷锟斤拷失锟斤拷时锟斤拷锟斤拷 FALSE锟斤拷

注锟斤拷

Note: 锟剿猴拷锟斤拷未锟斤拷 Windows 平台锟斤拷实锟街★拷