LaTeX command to put a box in its own resized page in a pdf file

pdfpagebox.tex

\documentclass[11pt,a4paper]{article}
\usepackage[driver=xetex]{geometry}
\usepackage[utf8x]{inputenc}




\newsavebox{\mypagebox}
\newlength{\mypageboxheight}

\newcommand{\pdfpagebox}[1] {\savebox{\mypagebox}{\noindent \fbox{#1}}%
\newpage\newgeometry{margin=0pt}%
\settowidth{\pdfpagewidth}{\usebox{\mypagebox}}%
\mypageboxheight=\ht\mypagebox
\advance\mypageboxheight\dp\mypagebox
\setlength{\pdfpageheight}{\mypageboxheight}%
\noindent\usebox{\mypagebox}
\newpage\restoregeometry\setlength{\pdfpagewidth}{0pt}\setlength{\pdfpageheight}{0pt}}


\begin{document}
This is a standard page.  Some of the future pages demonstrate \LaTeX boxes that have been popped out to their own PDF pages.

%
\pdfpagebox{This box is in its own page}

Things are normal on this page.

\pdfpagebox{\begin{minipage}{0.50\textwidth}
\centering
\begin{tabular}{llllll}
abcabcabc & defdefdef & ghighighi & abcabcabc & defdefdef & ghighighi \\
abcabcabc & defdefdef & ghighighi & abcabcabc & defdefdef & ghighighi \\
abcabcabc & defdefdef & ghighighi & abcabcabc & defdefdef & ghighighi \\
abcabcabc & defdefdef & ghighighi & abcabcabc & defdefdef & ghighighi \\
abcabcabc & defdefdef & ghighighi & abcabcabc & defdefdef & ghighighi \\
abcabcabc & defdefdef & ghighighi & abcabcabc & defdefdef & ghighighi \\
abcabcabc & defdefdef & ghighighi & abcabcabc & defdefdef & ghighighi \\
abcabcabc & defdefdef & ghighighi & abcabcabc & defdefdef & ghighighi \\
abcabcabc & defdefdef & ghighighi & abcabcabc & defdefdef & ghighighi \\
abcabcabc & defdefdef & ghighighi & abcabcabc & defdefdef & ghighighi \\
abcabcabc & defdefdef & ghighighi & abcabcabc & defdefdef & ghighighi
\end{tabular}
\end{minipage}}%

%\end{document}



\end{document}