Bug #15171 Updated: popen not fully supported

ID: 15171 Updated by: wez@php.net Reported By: mlong@mlong.org Status: Closed Bug Type: Feature/Change Request Operating System: Tru64 UNIX 5.0a PHP Version: 4.0.6 Assigned To: hholzgra New Comment: proc_open is in CVS and will be in PHP 4.3 Previous Comments: ------------------------------------------------------------------------ [2002-04-28 20:08:24] jimw@php.net proc_open() does this. ------------------------------------------------------------------------ [2002-03-19 16:29:51] phpbug@mrdrew.com I too would be greatly appreciative for a bi-directional pipe. In my case I don't need a named pipe since each writer should be paired with only one reader. Therefore, I prefer to have call like the one you are talking about where the pipe is essentially a pair of unnamed pipes to a system command from my PHP script. ------------------------------------------------------------------------ [2002-01-22 16:20:19] mlong@mlong.org Anything you could come up with would be great. There are times when you want to spawn a program and both read and write to stdin/stdout. Without a bidirectional pipe its quite messy to do. None of the other PHP functions come close to addressing it (exec, system, etc.) ------------------------------------------------------------------------ [2002-01-22 15:10:02] hholzgra@php.net bidirectional popen() is not portable, but i'm working on a general pipe() function ... ------------------------------------------------------------------------ [2002-01-22 14:06:31] mlong@mlong.org With PHP running under Tru64 UNIX, popen only supports "r" or "w"...it will not support "r+", "w+", or "rw". Yet according to the Tru64 popen man page, Tru64 supports bidirectional pipes and can take rw (unless I am reading it wrong). Yet when I try it with PHP, it tells me it is an invalid argument. From the man page: The popen() function creates a pipe between the calling program and a shell command to be executed. It returns a pointer to a FILE structure for the stream. If the type parameter is the value r, the calling program can read from the standard output of the command by reading from the returned file stream. If the type parameter is the value w, the calling program can write to the standard input of the command by writing to the returned file stream. Because open files are shared, a type r command can be used as an input filter and a type w command as an output filter. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=15171&edit=1