(PECL eio >= 0.0.1dev)
eio_truncate — Truncate a file
eio_truncate ( string $path [, int $offset = 0 [, int $pri = EIO_PRI_DEFAULT [, callable $callback = NULL [, mixed $data = NULL ]]]] ) : resource
eio_truncate() causes the regular file named by path
to be truncated to a size of precisely length
bytes
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
is custom data passed to the request.
result
request-specific result value; basically, the value returned by corresponding system call.
req
is optional request resource which can be used with functions like eio_get_last_error()
data
Arbitrary variable passed to callback
.
eio_busy() returns request resource on success or false
on error.
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.eio-truncate.php