stream_isatty()

(PHP 7 >= 7.2.0)

Check if a stream is a TTY

说明

stream_isatty(resource $stream): bool

Determines if stream$streamrefers to a valid terminal type device. This is a more portable version ofposix_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 #1stream_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：

php -r "var_export(stream_isatty(STDERR));" 2>output.txt

以上例程的输出类似于：