command - How to use pipe (" | ") in PHP exec?

Question

I can use CMD to execute two commands at the same time using:

command1 | command2

In PHP, I assumed it should work, but it doesn't:

Shell_exec("command1 | command2 ");

How do I fix it?

Answer 1

Try to add braces:

shell_exec("(command1 | command2)");

There is a comment in the PHP documentation that does some I/O-redirection with popen.