Looking on the internet deeply has found these results:

please be advised is the most popular phrase on the web.

please advise 111,200,000 results on the web	please be advised 126,400,000 results on the web More popular!
Some examples and use cases from the internet:	Some examples and use cases from the internet:
She's shivering up a storm, please advise. ray, my elevator's jammed and my instruments are malfunctioning, I am climbing and have lost position in cloud, please advise. 97 and code 100, Highway 18, E.B. of interstate, please advise. Dispatch, unit 1 and unit 3, we are 10 Centre, Yankee Zulu X Please advise Mr. Ares that his son in law... First unit on scene, please advise. Please advise Captain Gregson we need detectives and additional units at Nemetz Oil Recycling in Port Morris.	It doesn't look like this phrase is very popular! The search could not find any examples on the internet.

please advise

111,200,000 results on the web

please be advised

126,400,000 results on the web

More popular!

She's shivering up a storm, please advise.
ray, my elevator's jammed and my instruments are malfunctioning, I am climbing and have lost position in cloud, please advise.
97 and code 100, Highway 18, E.B. of interstate, please advise.
Dispatch, unit 1 and unit 3, we are 10
Centre, Yankee Zulu X
Please advise Mr. Ares that his son in law...
First unit on scene, please advise.
Please advise Captain Gregson we need detectives and additional units at Nemetz Oil Recycling in Port Morris.

It doesn't look like this phrase is very popular! The search could not find any examples on the internet.