First, learn how to ask questions on Support Forum. Mention your OS Version and your Server Specs.
Second, Learn to search the forums before asking such a generic question.
Third, Quote the procedure/guide you followed, the commands you issued to install your PHP7.
nickcraig wrote: I have tried a few different things and nothing seems to work
What did you try ? how do we know ? what failed ?
nickcraig wrote:I run "php -v" I see that but phpinfo still shows php 5
Please state how you installed PHP7 to let us know where the problem can be.