where is the security in PHP 5.4 by removing safe_mode

Question

I've got a sticky question in my mind: safe_mode has removed in PHP 5.4, so what is the security in this removal?

Does it mean that any application can execute any program?

What technique is used for this purpose to prevent such violent actions?

Answer 1

This article Will explain you why safe_mode has never made a single bit of sense and only provides you a false sense of security.