Bug #68761 [NEW]: filter_var(null) returns false with FILTER_NULL_ON_FAILURE

From: tonyli dot lives at gmail dot com Operating system: Ubuntu 12.04 PHP version: 5.5.20 Package: Filter related Bug Type: Bug Bug description:filter_var(null) returns false with FILTER_NULL_ON_FAILURE Description: ------------ Even with the flag on, trying to filter null returns false when it should be still null (as null is not a boolean). As per the documentation: If FILTER_NULL_ON_FAILURE is set, FALSE is returned only for "0", "false", "off", "no", and "", and NULL is returned for all non-boolean values. Similar to: https://bugs.php.net/bug.php?id=67167 Test script: --------------- var_dump(filter_var(null, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); var_dump(filter_var(false, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); var_dump(filter_var(true, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); var_dump(filter_var('test', FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE)); Expected result: ---------------- bool(false) bool(false) bool(true) NULL Actual result: -------------- NULL bool(false) bool(true) NULL -- Edit bug report at https://bugs.php.net/bug.php?id=68761&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=68761&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=68761&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=68761&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=68761&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=68761&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=68761&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=68761&r=needscript Try newer version: https://bugs.php.net/fix.php?id=68761&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=68761&r=support Expected behavior: https://bugs.php.net/fix.php?id=68761&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=68761&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=68761&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=68761&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=68761&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=68761&r=dst IIS Stability: https://bugs.php.net/fix.php?id=68761&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=68761&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=68761&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=68761&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=68761&r=mysqlcfg