note 64060 added to function.error-reporting

The example of E_ALL ^ E_NOTICE is a 'bit' confusing for those of us not wholly conversant with bitwise operators. If you wish to remove notices from the current level, whatever that unknown level might be, use & ~ instead: <?php //.... $errorlevel=error_reporting(); error_reporting($errorlevel & ~E_NOTICE); //...code that generates notices error_reporting($errorlevel); //... ?> ^ is the xor (bit flipping) operator and would actually turn notices *on* if they were previously off (in the error level on its left). It works in the example because E_ALL is guaranteed to have the bit for E_NOTICE set, so when ^ flips that bit, it is in fact turned off. & ~ (and not) will always turn off the bits specified by the right-hand parameter, whether or not they were on or off. ---- Server IP: 66.163.161.117 Probable Submitter: 68.9.252.218 ---- X-Spam-Status: No, hits=3.1 required=5.0 tests=DATE_MISSING,FROM_NO_LOWER autolearn=no version=2.64 ---- Manual Page -- http://www.php.net/manual/en/function.error-reporting.php Edit -- http://master.php.net/note/edit/64060 Del: integrated -- http://master.php.net/note/delete/64060/integrated Del: useless -- http://master.php.net/note/delete/64060/useless Del: bad code -- http://master.php.net/note/delete/64060/bad+code Del: spam -- http://master.php.net/note/delete/64060/spam Del: non-english -- http://master.php.net/note/delete/64060/non-english Del: in docs -- http://master.php.net/note/delete/64060/in+docs Del: other reasons-- http://master.php.net/note/delete/64060 Reject -- http://master.php.net/note/reject/64060 Search -- http://master.php.net/manage/user-notes.php