Php/docs/function.stream-isatty
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stream_isatty
(PHP 7 >= 7.2.0)
stream_isatty — Check if a stream is a TTY
说明
stream_isatty
( resource $stream
) : bool
Determines if stream stream
refers to a valid terminal type device.
This is a more portable version of posix_isatty(), since it works on Windows systems too.
参数
stream
返回值
成功时返回 true
, 或者在失败时返回 false
。
范例
Example #1 stream_isatty() example
This command can be used to determine if a standard output / standard error stream is redirected to a file.
php -r "var_export(stream_isatty(STDERR));"
以上例程的输出类似于:
true
php -r "var_export(stream_isatty(STDERR));" 2>output.txt
以上例程的输出类似于:
false