ID: 39651 Updated by: [EMAIL PROTECTED] Reported By: rherror404 at gmail dot com Status: Open Bug Type: Program Execution Operating System: Windows PHP Version: 5.2.0 New Comment:
Not reproducible on Linux. Previous Comments: ------------------------------------------------------------------------ [2006-11-27 22:49:38] rherror404 at gmail dot com Description: ------------ Defining the descriptor spec for STDOUT for a call to proc_open() to append to a file instead starts writing from beginning (not at the end as one would expect). C:\WINDOWS\Temp>php launch1.php Reproduce code: --------------- C:\WINDOWS\Temp>type launch1.php <? $dspec = array(0 => array("pipe", "r") , 1 => array("file", 'C:\WINDOWS\TEMP\launch_stdout.txt', "a") , 2 => array("file", 'C:\WINDOWS\TEMP\launch_stderr.txt', "a") ); $i = 5; $inputpackage = serialize($i); $proc = proc_open('php C:\WINDOWS\TEMP\launch2.php', $dspec, $pipes); if ( is_resource($proc) ) {fwrite($pipes[0], $inputpackage); fclose($pipes[0]); proc_close($proc);} $i = 2; $inputpackage = serialize($i); $proc = proc_open('php C:\WINDOWS\TEMP\launch2.php', $dspec, $pipes); if ( is_resource($proc) ) {fwrite($pipes[0], $inputpackage); fclose($pipes[0]); proc_close($proc);} exit(); ?> C:\WINDOWS\Temp>type launch2.php <? function tostdout( $x ) {echo date('[Y-m-d H:i:s (T P)]') . " <PID " . getmypid( ) . "> $x\r\n";} $inbuffer = fgets(STDIN, 8192); $i = unserialize($inbuffer); for ( $j = 0; $j < $i; $j++ ) {tostdout("$j : $i"); sleep(1);} exit(); ?> C:\WINDOWS\Temp> Expected result: ---------------- C:\WINDOWS\Temp>type launch_stdout.txt [2006-11-27 16:33:53 (CST -06:00)] <PID 4492> 0 : 5 [2006-11-27 16:33:54 (CST -06:00)] <PID 4492> 1 : 5 [2006-11-27 16:33:55 (CST -06:00)] <PID 4492> 2 : 5 [2006-11-27 16:33:56 (CST -06:00)] <PID 4492> 3 : 5 [2006-11-27 16:33:57 (CST -06:00)] <PID 4492> 4 : 5 [2006-11-27 16:33:58 (CST -06:00)] <PID 6808> 0 : 2 [2006-11-27 16:33:59 (CST -06:00)] <PID 6808> 1 : 2 /* I would expect the second process to append its output to (the end of) the output of the first process. */ Actual result: -------------- C:\WINDOWS\Temp>type launch_stdout.txt [2006-11-27 16:33:58 (CST -06:00)] <PID 6808> 0 : 2 [2006-11-27 16:33:59 (CST -06:00)] <PID 6808> 1 : 2 [2006-11-27 16:33:55 (CST -06:00)] <PID 4492> 2 : 5 [2006-11-27 16:33:56 (CST -06:00)] <PID 4492> 3 : 5 [2006-11-27 16:33:57 (CST -06:00)] <PID 4492> 4 : 5 /* The second process has over-written lines one and two of the output of the first process. */ ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=39651&edit=1