Multiple input with proc_open()

Question

I\'m currently working on an online program. I\'m writing a php script that executes a command in the command line with proc_open() (under Linux Ubuntu). This is my code so far:

Answer 1

You forgot to write a newline to the pipe, so your program will think that it got only 45 as input. Try this:

fwrite($pipes[0], "4");
fwrite($pipes[0], "\n");
fwrite($pipes[0], "5");
fclose($pipes[0]);

Or shorter:

fwrite($pipes[0], "4\n5");
fclose($pipes[0]);