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Determine if a file descriptor is an interactive terminal

PHP Manual
POSIX Functions
Determine if a file descriptor is an interactive terminal

posix_isatty

(PHP 4, PHP 5)

posix_isatty — Determine if a file descriptor is an interactive terminal

Description

bool posix_isatty ( int $fd )

Determines if the file descriptor fd refers to a valid terminal type device.

Parameters

fd: The file descriptor.

Return Values

Returns TRUE if fd is an open descriptor connected to a terminal and FALSE otherwise.

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