Bug #67167 [Csd]: Wrong return value from FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE

Edit report at https://bugs.php.net/bug.php?id=67167&edit=1 ID: 67167 Updated by: cmb@php.net Reported by: peter dot schultz at classmarkets dot com Summary: Wrong return value from FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE Status: Closed Type: Bug Package: Filter related Operating System: Fedora 20 PHP Version: 5.5.12 Assigned To: cmb Block user comment: N Private report: N New Comment: > is false, when it should be null according to the docs No. The filter_var() docs[1] state: | Note that scalar values are converted to string internally | before they are filtered. So basically you're calling: filter_var('', FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE) However, FILTER_VALIDATE_BOOLEAN is documented[2] to: | If FILTER_NULL_ON_FAILURE is set, FALSE is returned only for | "0", "false", "off", "no", and "" […] So the behavior complies to the documentation. [1] <http://php.net/manual/en/function.filter-var.php> [2] <http://de2.php.net/manual/en/filter.filters.validate.php> Previous Comments: ------------------------------------------------------------------------ [2019-03-18 09:59:33] lebadap at gmail dot com Hi guys, Either this problem persist or i am doing something wrong here.I have PHP version 7.3.1 and the output of this: filter_var(null, FILTER_VALIDATE_BOOLEAN, FILTER_NULL_ON_FAILURE) is false, when it should be null according to the docs Any ideas? ------------------------------------------------------------------------ [2016-10-17 10:08:29] bwoebi@php.net Automatic comment on behalf of levim Revision: http://git.php.net/?p=php-src.git;a=commit;h=cb91a51b0052d512c0110ec934a23e263258e461 Log: Partially fix bug #67167 - Wrong return value... ------------------------------------------------------------------------ [2016-09-09 10:58:53] cmb@php.net Automatic comment on behalf of levim Revision: http://git.php.net/?p=php-src.git;a=commit;h=cb91a51b0052d512c0110ec934a23e263258e461 Log: Partially fix bug #67167 - Wrong return value... ------------------------------------------------------------------------ [2016-09-09 10:26:55] cmb@php.net > Has this bugfix actually landed? If so, in which version, can't > find it in the changelog. The fix has only be applied to PHP 7.0.0+, and indeed, it's missing in the changelog. I'm going to backport to PHP 5.6. ------------------------------------------------------------------------ [2016-09-09 10:23:17] cmb@php.net Related To: Bug #73054 ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at https://bugs.php.net/bug.php?id=67167 -- Edit this bug report at https://bugs.php.net/bug.php?id=67167&edit=1