(PECL eio >= 0.0.1dev)
Truncate a file
resource eio_truncate ( string $path [, int $offset = 0 [, int $pri = EIO_PRI_DEFAULT [, callable $callback = NULL [, mixed $data = NULL ]]]] )
eio_truncate() causes the regular file named by path to be truncated to a size of precisely length bytes
Parameters:
path
File path
offset
Offset from beginning of the file.
pri
The request priority: EIO_PRI_DEFAULT, EIO_PRI_MIN, EIO_PRI_MAX, or NULL. If NULL passed, pri internally is set to EIO_PRI_DEFAULT.
callback
callback function is called when the request is done. It should match the following prototype:
void callback(mixed $data, int $result[, resource $req]);
data
Arbitrary variable passed to callback.
Returns:
eio_busy() returns request resource on success or FALSE on error.
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