Those functions provide means to execute commands on the system itself, and means to secure such commands.
建立這個延伸不需要任何外部程式庫。
這些函數是PHP核心的一部分,不需要安裝就可使用。
php.ini中沒有定義此延伸的組態指令。
This extension defines a process resource, returned by proc_open().
這個延伸沒有定義任何常數。
Open files with lock (especially open sessions) should be closed before executing a program in the background.
These functions are also closely related to the backtick operator. Also, while in 安全模式 you must consider the safe_mode_exec_dir directive.