/usr/share/man/man1/pecl.1.gz is in php-pear 1:1.10.1+submodules+notgz-9+deb9u1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/man/man1/pear.1.gz
/usr/share/man/man1/pear.1.gz