Many times php developers want to encode there php or important HTML,CSS or Javascript code. In this article I will show you the very simple encoding with using base64_encode method.
php encode and decode string with key

Here is working example.
<!--?<span class="hiddenSpellError" pre="" data-mce-bogus="1"-->php
$str = 'This is an encoded string';
echo base64_encode($str);
echo base64_decode("VGhpcyBpcyBhbiBlbmNvZGVkIHN0cmluZw==");
?></pre>
<pre>
you can create your own antilogarithm for encoding. For more information you can check the following URL

Check this http://carlsonorozco.com/blog/view/3/Encode-and-Decode-using-PHP.. thanks