#49694 [NEW]: proc_open, stream_select function hangs on return

From: compconsultant at yahoo dot com Operating system: Centos 5.3 PHP version: 5.2.11 PHP Bug Type: Streams related Bug description: proc_open, stream_select function hangs on return Description: ------------ Using proc_open to open a pipe to a command, and, putting stream_select into a function, hangs upon return from that function. Reproduce code: --------------- <?php function SelectStream($StreamsArray) { $Null = array(); $timeout = NULL; stream_select($StreamsArray, $Null, $Null, $timeout); echo "After select\n"; return FALSE; } $ProcDescriptor = array(1 => array("pipe", "w")); $Resource = proc_open("tail -F /var/log/mail.log", $ProcDescriptor, $Pipes, NULL, NULL, array("binary_pipes" => TRUE)); if ($Resource === FALSE) die("proc_open failed\n"); $ProgResource = $Pipes[1]; /* $ProgResource = popen("tail -F /var/log/mail.log", "r"); if ($ProgResource === FALSE) die("Could not open the PIPE\n"); */ $Streams[] = $ProgResource; $Resource = SelectStream($Streams); echo "ok\n"; ?> Expected result: ---------------- I expect ok to be displayed. If you replace proc_open with popen (uncomment the lines), the same function returns fine (ok displayed). If you remove the stream_select, it also returns fine. Actual result: -------------- The string ok is not displayed, the statement is never reached. After select is displayed. So, it is hanging on the return statement. -- Edit bug report at http://bugs.php.net/?id=49694&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=49694&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=49694&r=trysnapshot53 Try a snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=49694&r=trysnapshot60 Fixed in SVN: http://bugs.php.net/fix.php?id=49694&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=49694&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=49694&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=49694&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=49694&r=needscript Try newer version: http://bugs.php.net/fix.php?id=49694&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=49694&r=support Expected behavior: http://bugs.php.net/fix.php?id=49694&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=49694&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=49694&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=49694&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=49694&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=49694&r=dst IIS Stability: http://bugs.php.net/fix.php?id=49694&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=49694&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=49694&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=49694&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=49694&r=mysqlcfg