Will I suffer if I learn PHP4 compared to PHP5?
<p>I'm a little interested into delving into PHP, and picked up a book from my library to learn more about it. </p>

<p>However, the book covers PHP4 (Library doesn't keep up with the times...), and I know PHP5 is the current standard.</p>

<p>Will a PHP4 book teach me things that are depreciated, useless, or just plain wrong? Or could I learn sufficiently enough to be able to jump into PHP5 with no problems?</p>
