When "USES= php:ext" is set into the Makefile, there is a following
warning:"@exec is deprecated, please use @[pre|post][un]exec" [1][2]
After change exec and unexec to post* it works again correctly
[1] https://github.com/freebsd/freebsd-ports/blob/master/CHANGES#L407
[2] https://www.freebsd.org/doc/en/books/porters-handbook/book.html#plist-keywords-base-exec
Approved by: xxx (mentor)
#Differential Revision: https://reviews.freebsd.org/Dxxxxx