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PHP Manual

This manual is provided as a courtesy. It is not an official source. Please check php.net for updated information.

PHP Manual

PHP Manual
PHP Manual
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dio_truncate

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

dio_truncate --  Truncates file descriptor fd to offset bytes

Description

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.

Note: This function is not implemented on Windows platforms.

Parameters

fd

The file descriptor returned by dio_open().

offset

The offset in bytes.

Return Values

Returns TRUE on success or FALSE on failure.

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