I wrote a php script. I want it show help message when called with standard input connected to a tty device (terminal) before reading and executing interactively, but dont show when called with a file or stream from pipe as standard input.
我写了一个PHP脚本。我希望它在使用连接到tty设备(终端)的标准输入调用之前显示帮助消息,然后以交互方式读取和执行,但是在使用文件或来自管道的流作为标准输入调用时不显示。
Is there a way to detect this from PHP?
有没有办法从PHP中检测到这个?
2 个解决方案
#1
12
Use posix_isatty
.
使用posix_isatty。
This function accepts both a file descriptor (an integer) and a PHP stream. If it receives a PHP stream, it automatically attempts to cast it in order to obtain a file descriptor and use it instead.
此函数接受文件描述符(整数)和PHP流。如果它收到PHP流,它会自动尝试转换它以获取文件描述符并使用它。
#2
0
Since PHP 7.2 you can use stream_isatty
, which works on Windows too.
从PHP 7.2开始,您可以使用stream_isatty,它也适用于Windows。
For example:
例如:
php -r "var_dump(stream_isatty(STDERR));"
Results in
结果是
bool(true)
But
但
php -r "var_dump(stream_isatty(STDERR));" 2>output.txt
Results in
结果是
bool(false)
(this of course works on STDOUT too).
(这当然也适用于STDOUT)。
#1
12
Use posix_isatty
.
使用posix_isatty。
This function accepts both a file descriptor (an integer) and a PHP stream. If it receives a PHP stream, it automatically attempts to cast it in order to obtain a file descriptor and use it instead.
此函数接受文件描述符(整数)和PHP流。如果它收到PHP流,它会自动尝试转换它以获取文件描述符并使用它。
#2
0
Since PHP 7.2 you can use stream_isatty
, which works on Windows too.
从PHP 7.2开始,您可以使用stream_isatty,它也适用于Windows。
For example:
例如:
php -r "var_dump(stream_isatty(STDERR));"
Results in
结果是
bool(true)
But
但
php -r "var_dump(stream_isatty(STDERR));" 2>output.txt
Results in
结果是
bool(false)
(this of course works on STDOUT too).
(这当然也适用于STDOUT)。