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posix_isatty

Description

The posix_isatty of POSIX for PHP determines if a file descriptor is an interactive terminal.

Syntax

posix_isatty(
    resource|int $file_descriptor
): bool

Parameters

file_descriptor

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.

Return

Returns true if file_descriptor is an open descriptor connected to a terminal and false otherwise.

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