Php/docs/function.posix-ttyname

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posix_ttyname

(PHP 4, PHP 5, PHP 7)

posix_ttynameDetermine terminal device name


说明

posix_ttyname ( mixed $fd ) : string

Returns a string for the absolute path to the current terminal device that is open on the file descriptor fd.


参数

fd

The file descriptor, which is expected to be either a file resource or an int. An int will be assumed to be a file descriptor that can be passed directly to the underlying system call.

In almost all cases, you will want to provide a file resource.


返回值

On success, returns a string of the absolute path of the fd. On failure, returns false