Description
void
clearstatcache ( void)
Invoking the stat or
lstat system call on most systems is
quite expensive. Therefore, the result of the last call to any of
the status functions (listed below) is stored for use on the next
such call using the same filename. If you wish to force a new
status check, for instance if the file is being checked many
times and may change or disappear, use this function to clear the
results of the last call from memory.
This value is only cached for the lifetime of a single request.
Affected functions include stat(),
lstat(),
file_exists(),
is_writable(),
is_readable(),
is_executable(),
is_file(),
is_dir(),
is_link(),
filectime(),
fileatime(),
filemtime(),
fileinode(),
filegroup(),
fileowner(),
filesize(),
filetype(), and
fileperms().
