Differences in UTF-8 html form

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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
...
    $hexget = unpack('H*', $textget);
    $hexpost = unpack('H*', $textpost);
</%init>

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26233931363b26233936393b26233934383b26233934393b26233935343b2623393435
+3b26233935373b26233934323b26233936333b26233936393b26233935373b

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26233931363b26233936393b26233934383b26233934393b26233935343b2623393435
+3b26233935373b26233934323b26233936333b26233936393b26233935373b

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