title: What is data serialization?
body: <p>First of all, I couldn't get clear definition of it from <a href="http://en.wikipedia.org/wiki/Serialization" rel="noreferrer">WikiPedia</a> or even from <a href="http://php.net/manual/en/function.serialize.php" rel="noreferrer">serialize</a> function in the <code>PHP</code> manual. I need to know some cases where we need the term serialization and how things are going without it? In other words, Where you need serialization and without it your code will be missing some important feature.</p>