<h2>This illustrates reading a line from /etc/passwd</h2>The line: <i>vcsa:x:69:69:virtual console memory owner:/dev:/sbin/nologin
</i><br />A print_r() of the LineReader object:<pre>LineReader Object
(
    [filename:private] => /etc/passwd
    [fp:private] => Resource id #5
    [cache:private] => Array
        (
            [18] => vcsa:x:69:69:virtual console memory owner:/dev:/sbin/nologin

        )

    [useCache:private] => 1
)
</pre>
<p>
    Caching is normally used unless turned off specifically by passing FALSE as the second argument to the constructor.
    This means you get a small speed increase when reading from larger files (if you re-read the same line).
</p>