Those functions provide means to execute commands on the system itself, and means to secure such commands.
Ingen eksterne libraries er nødvendige for at kompilere denne udvidelse.
Der er ingen installation nødvendig for at kunne bruge disse funktioner; de er en del af PHP kernen.
Denne udvidelse har intet konfigurations-direktiv defineret i php.ini.
This extension defines a process resource, returned by proc_open().
Denne udvidelse har ingen konstanter.
These functions are also closely related to the backtick operator. Also, while in safe mode you must consider the safe_mode_exec_dir directive.