: Use PDO (PHP Data Objects) to prevent SQL injection. This separates the query command from the user data, making it impossible for a malicious user to "break" the query.
Why "id=1" is common The value "1" is frequently used in examples, default records, or initial database entries, so many pages are reachable at id=1. Additionally, using id=1 in a search broadens hits because many sites expose that default or first-record URL. inurl php id 1 2021