[ars]

> It'll be safe to say that if your code runs fine under 5.6 with error_reporting set to -1, then you'll probably run under 7 without too much trouble.

Not completely, ext/mysql does not output E_DEPRECATED. Although I guess installing a compatibility library is probably not all that much trouble.

[McGlockenshire]

Calling mysql_connect will cause an E_DEPRECATED. Same with mysql_pconnect.

Source: the manual page. http://php.net/mysql_connect

None of the other ext/mysql functions do so.