完成后，不关闭与数据库的连接有什么安全隐患？

Question

What security issues can arise from not closing the database connection after using it? Doesn't PHP automatically close it once a new page loads?

Answer 1

As the mysql_close() documentation says:

Using mysql_close() isn't usually necessary, as non-persistent open links are automatically closed at the end of the script's execution. See also freeing resources.

Since the connections are managed by PHP there shouldn't be a security risk.