Bug #54129 [NEW]: using LOCK_NB whilst aquiring a lock with flock() does work on windows

From: Operating system: Windows Server 2008 (x64) PHP version: 5.3.5 Package: Documentation problem Bug Type: Bug Bug description:using LOCK_NB whilst aquiring a lock with flock() does work on windows Description: ------------ The online documentation states that LOCK_NB to achieve a non-blocking lock-attempt is not supported on windows. The given test script, if started twice, just returns stating that the lock can not be aquired. Therefor, since it does not block, using LOCK_NB seems to work on windows and the documentation should be updated accordingly. If this is not the expected behaviour, the documentation should reflect the possible situations, where using LOCK_NB does indeed not work. Furthermore the statement "The automatic unlocking when the file's resource handle is closed was removed. Unlocking now always has to be done manually." should be checked. My test show that closing the file pointer with fclose() does release the lock. Test script: --------------- <?php $lockfile = 'dummy.lock'; $fp = fopen( $lockfile, 'w+' ); if ( !$fp ) { echo "unable to open lockfile\n"; exit; } if ( !flock( $fp, LOCK_EX | LOCK_NB ) ) { echo "unable to aquire lock\n"; exit; } sleep( 10 ); Expected result: ---------------- According to documentation, script should block (since LOCK_NB is not supported) Actual result: -------------- flock does not block -- Edit bug report at http://bugs.php.net/bug.php?id=54129&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=54129&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=54129&r=trysnapshot53 Try a snapshot (trunk): http://bugs.php.net/fix.php?id=54129&r=trysnapshottrunk Fixed in SVN: http://bugs.php.net/fix.php?id=54129&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=54129&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=54129&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=54129&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=54129&r=needscript Try newer version: http://bugs.php.net/fix.php?id=54129&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=54129&r=support Expected behavior: http://bugs.php.net/fix.php?id=54129&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=54129&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=54129&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=54129&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=54129&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=54129&r=dst IIS Stability: http://bugs.php.net/fix.php?id=54129&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=54129&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=54129&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=54129&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=54129&r=mysqlcfg