Check text size in byte
<p>I have string </p>

<pre><code>$text = "this is my text";
</code></pre>

<p>and i want to know the size(byte), not text length.</p>

<p>so i tried to use </p>

<blockquote>
  <p>filesize();</p>
</blockquote>

<p>but i get Error</p>

<blockquote>
  <p>Warning: filesize(): stat failed for this is my text</p>
</blockquote>

<p>and if i tried to use </p>

<blockquote>
  <p>mb_strlen()</p>
</blockquote>

<p>it only count the text lenght, not the size.</p>

<p>How to know the text size ? i want the result something like "1024 bytes"</p>

<p>Thanks</p>
