dio_truncate

dio_truncate

Truncates file descriptor fd to offset bytes

bool **dio_truncate** resource $fd int $offset

truncates a file to at most 
bytes in size.

dio_truncate``offset

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.

fd The file descriptor returned by . dio_open

offsetThe offset in bytes.

return.success