Problem for calling gnuplot via PHP using xampp server

[catq]

Hello,
I am trying to create a data plot with gnuplot and view the image via website.
so I created a simple test.php file
<?php
$file= `perl createpng.pl 2>&1`;
echo "$file<br>";
echo "<img src=$file alt=test /><br>\n";
?>
it calls a local perl file 'createpng.pl' which create a png file.

This perl script works well when I run it in the shell terimal.

However, when I load the test.php file, the following error message prompt.

/usr/bin/gnuplot: /opt/lampp/lib/libjpeg.so.62: no version information available (required by /usr/lib/libwx_gtk2u_core-2.8.so.0)
/usr/bin/gnuplot: /opt/lampp/lib/libgcc_s.so.1: version `GCC_4.2.0' not found (required by /usr/lib/i386-linux-gnu/libstdc++.so.6)
/usr/bin/gnuplot: /opt/lampp/lib/libz.so.1: no version information available (required by /usr/lib/i386-linux-gnu/libgio-2.0.so.0)
/usr/bin/gnuplot: /opt/lampp/lib/libjpeg.so.62: no version information available (required by /usr/lib/i386-linux-gnu/libtiff.so.4) exit value = 1 signal number = 0 dumped core = 0 at /usr/local/share/perl/5.10.1/Chart/Graph/Gnuplot.pm line 766 test.png

I checked every libs, it seems ok. there's no missing libs: Anyone can help me. Thank you.

==========================================================
bio3@bio3-G41MT-S2:/opt/lampp/htdocs/test$ locate libjpeg
/opt/lampp/lib/libjpeg.so
/opt/lampp/lib/libjpeg.so.62
/opt/lampp/lib/libjpeg.so.62.0.0
/usr/lib/i386-linux-gnu/libjpeg.so.62
/usr/lib/i386-linux-gnu/libjpeg.so.62.0.0
/usr/share/doc/libjpeg62
/usr/share/doc/libjpeg62/README.gz
/usr/share/doc/libjpeg62/changelog.Debian.gz
/usr/share/doc/libjpeg62/copyright
/var/lib/dpkg/info/libjpeg62:i386.list
/var/lib/dpkg/info/libjpeg62:i386.md5sums
/var/lib/dpkg/info/libjpeg62:i386.postinst
/var/lib/dpkg/info/libjpeg62:i386.shlibs
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