How to get the size of the content of a variable in PHP
<p>If I have the following variable in PHP:</p>

<pre><code>$Message='Hello, this is just test message';
</code></pre>

<p>How can I get the size of its content in bytes? For instance, to print something like:</p>

<pre><code>&lt;p&gt;Message size is 20KB&lt;/p&gt;
</code></pre>
