posix_isatty(PHP 4, PHP 5) posix_isatty — Determine if a file descriptor is an interactive terminal Описание
   bool posix_isatty
    ( int $fd
   ) 
   Determines if the file descriptor fd refers to a valid terminal type device. Список параметров
 
 Возвращаемые значенияReturns TRUE if fd is an open descriptor connected to a terminal and FALSE otherwise.  | 
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