note 69500 added to ref.bc

BEWARE ! The bcmath functions do not abide by the normal rounding rules, but 'cut off' your string at the digit specified by precision. <?php $x = '0.00016132'; print bcadd( $x, 0, 4 ); // add 0 to try and round off the number at 4 digits printf( '%01.4f', round( $x, 4 ) ); // this does work printf( '%01.4f', $x ); // this works too - round() is not needed as (s)printf will round automatically ?> results in: 0.0001 // incorrect 0.0002 // correct 0.0002 // correct ---- Server IP: 83.137.20.120 Probable Submitter: 62.234.167.227 ---- Manual Page -- http://www.php.net/manual/en/ref.bc.php Edit -- https://master.php.net/note/edit/69500 Del: integrated -- https://master.php.net/note/delete/69500/integrated Del: useless -- https://master.php.net/note/delete/69500/useless Del: bad code -- https://master.php.net/note/delete/69500/bad+code Del: spam -- https://master.php.net/note/delete/69500/spam Del: non-english -- https://master.php.net/note/delete/69500/non-english Del: in docs -- https://master.php.net/note/delete/69500/in+docs Del: other reasons-- https://master.php.net/note/delete/69500 Reject -- https://master.php.net/note/reject/69500 Search -- https://master.php.net/manage/user-notes.php