#14231 [Opn->Csd]: c-function select() please

ID: 14231 Updated by: andrey@php.net Reported By: php at korelstar dot de -Status: Open +Status: Closed Bug Type: Feature/Change Request Operating System: Linux 2.4 PHP Version: 4.0.6 New Comment: proc_open & stream_select Previous Comments: ------------------------------------------------------------------------ [2001-11-26 09:14:36] derick@php.net popen is unidirectional on Linux, PHP can't fix that: (from "man popen"): The popen() function opens a process by creating a pipe, forking, and invoking the shell. Since a pipe is by defi­ nition unidirectional, the type argument may specify only reading or writing, not both; the resulting stream is cor­ respondingly read-only or write-only. And the other problem can be fixed by using non-blocking IO, which PHP does not support now AFAIK. Derick ------------------------------------------------------------------------ [2001-11-26 09:00:01] php at korelstar dot de I'm not familiar with C, but I heard that the function "select" will help me with this problem: I have a fifo-pipe and want to read from it. But the scripts doesn't do anything until I write something to the pipe. But I want to open the pipe with PHP and on the next step, I want to write something to it. The Problem ist, that I have to know, if there is data on the pipe or not. feof does not help. On the other side, the PHP-function popen should be extended for read AND write on Linux. I heard, other plattforms can do it already. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=14231&edit=1