There are quite a few posts on this site that deal with the problem of abbreviating names in the bibliography to two letters, for instance Charles to Ch. The suggested solutions include using the \relax command, either manual or automated using source maps, or by defining a new commands such as \newcommand{\Ch}{Ch}.
However, when I try to implement the first solution myself I do not get the desired results. Also the option with the new command does not work and keeps giving me nesting errors for some reason.
MWE
\documentclass{article}
\usepackage{filecontents}
\begin{filecontents}{\jobname.bib}
@book{Book1,
author = {Doe, {\relax Ph}ilippe},
title = {An Important Book},
publisher = {Publisher},
date = {2012},
}
\end{filecontents}
\usepackage[style=verbose,giveninits=true, backend=biber]{biblatex}
\addbibresource{\jobname.bib}
\begin{document}
\nocite{*}
\printbibliography
\end{document}

biblatex(and Biber) is the extended name format. Usage of the extended name format for this job is shown in the MWE of the question in https://tex.stackexchange.com/q/422938/35864 my answer there contains a kludge to automate this that I do not recommend. – moewe Jan 15 '20 at 16:51