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(PHP 4 >= 4.2.0, PHP 5 <= 5.0.4)

dio_truncate --  Truncates file descriptor fd to offset bytes


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.

Poznámka: Tato funkce není implementována na platformách Windows.

Seznam parametrů


The file descriptor returned by dio_open().


The offset in bytes.

Návratové hodnoty

Vrací TRUE při úspěchu, FALSE při selhání.