I was looking for social website php script in internet for 150 years, and non of them is not working , all of them have errors

Question

php scripts in internet all are with wrong code, why?

Answer 1

Copying codes directly from the Internet is rarely an advisable course of action.

If you want help with a particular problem please provide samples of what you have tried and detail on what you are trying to achieve, preferably in a new question.

Answer 2

Probably outdated mysql API that won't work in php 7.

http://php.net/manual/en/mysql.php

You'll have to update them to mysqli or PDO