p=1
export p

export p=4
declare -p p

r=(1)
export r

f() { export r=(4) ; }
f
declare -p r

f() { export r='(5)' ; }
f
declare -p r

f() { export -a r=(6) ; }
f
declare -p r

f() { export -a r='(7)' ; }
f
declare -p r