Finding files with in date range

Here is the command for find files that was modifed between 1st July 2018 to 20th July 2018 with it's details,

find . -type f -name "*.php" -newermt 2018-07-01 ! -newermt 2018-07-21 -exec ls -l {} \;

Please note, you have to mention next date of till date.