The script duplicates three chars at the end

[elvisef]

Let's say we have something like this:

a:1:{s:5:"content";s:97:"<h2>A little testing there</h2>
<ul>
<li>śm„ć”ń</li>
<li>am 7:00 - 4:00 pm</li>
</ul>";}

As per bytes it's 92 long for UTF-8.

The script indeed fixes the string but...

Why does the script will turn "97" into "92" but... everytime it fixes the script, it adds ";) part at the end of the whole string, so it looks like this:

a:1:{s:5:"content";s:92:"<h2>A little testing there</h2>
<ul>
<li>śm„ć”ń</li>
<li>am 7:00 - 4:00 pm</li>
</ul>";}";}

So it duplicates ";}.

How to fix this problem ?