a:4:{s:15:"microtime_start";d:1440760515.129396;s:6:"client";s:7:"soleane";s:4:"name";s:7:"Soleane";s:4:"mail";s:19:"moi.xuzia@gmail.com";}* function handle_usermod_after
 --- BEFORE --- | --- AFTER ---
soleane <= ? => soleane
Soleane <= ? => Soleane
moi.xuzia@gmail.com <= ? => moi.xuzia@gmail.com


NO diff in mail => do nothing