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posix_ttyname
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posix_ttyname

Name

posix_ttyname — Determine terminal device name for a file descriptor (POSIX.1, 4.7.2).

Synopsis

string posix_ttyname(fd); int fd: File descriptor to examine

Returns

The pathname of the controlling terminal for a given file descriptor, or FALSE on error.

Description

This function examines the file descriptor given by fd and returns the pathname of the terminal which is open on that descriptor, if there is one. FALSE will be returned on error; for instance, if the given descriptor has no terminal open on it.

Version

PHP 3.0.13+, PHP 4.0b4+

Example

Example 1091. Finding the terminal for a file descriptor

if (FALSE === ($ttyname = posix_ttyname($fd))) {
    echo "Could not get terminal name.\n";
} else {
    echo "The terminal connected to the descriptor is: '$ttyname'.\n";
}

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