note 82951 added to function.proc-open

@joachimb: The descriptorspec describes the i/o from the perspective of the process you are opening. That is why stdin is read: you are writing, the process is reading. So you want to open descriptor 2 (stderr) in write mode so that the process can write to it and you can read it. In your case where you want all descriptors to be pipes you should always use: <?php $descriptorspec = array( 0 => array('pipe', 'r'), // stdin 1 => array('pipe', 'w'), // stdout 2 => array('pipe', 'w') // stderr ); ?> The examples below where stderr is opened as 'r' is a mistake. I would like to see examples of using higher descriptor numbers than 2. Specifically GPG as mentioned in the documentation. ---- Server IP: 209.41.74.194 Probable Submitter: 69.254.0.26 ---- Manual Page -- http://www.php.net/manual/en/function.proc-open.php Edit -- https://master.php.net/note/edit/82951 Del: integrated -- https://master.php.net/note/delete/82951/integrated Del: useless -- https://master.php.net/note/delete/82951/useless Del: bad code -- https://master.php.net/note/delete/82951/bad+code Del: spam -- https://master.php.net/note/delete/82951/spam Del: non-english -- https://master.php.net/note/delete/82951/non-english Del: in docs -- https://master.php.net/note/delete/82951/in+docs Del: other reasons-- https://master.php.net/note/delete/82951 Reject -- https://master.php.net/note/reject/82951 Search -- https://master.php.net/manage/user-notes.php