ID: 48968 Updated by: j...@php.net Reported By: salsi at icosaedro dot it -Status: Open +Status: Bogus Bug Type: *General Issues PHP Version: 5.3.0 New Comment:
Those are strings. There's no such magic available that can guess you're not passing string but a number there.. Previous Comments: ------------------------------------------------------------------------ [2009-07-18 08:28:42] salsi at icosaedro dot it Description: ------------ The (float) typecast operator applied to a string is expected to return the floating point number represented by the string, instead the special values "NAN", "INF" and "-INF" are not handled properly and give 0.0, 0.0 and -0.0 respectively. To make the (float) operator applied to a string symmetrical versus the (string) operator applied to a float, the special strings "NAN", "INF" and "-INF" case sensitive should be translated into NAN, INF and -INF respectively: $f = NAN; $s = (string) $f; # ==> "NAN" $g = (float) $s; # ==> NAN again Apparently the serialize/unserialize process works properly as it was fixed in bug #27646: var_dump( unserialize(serialize(NAN)) ) ==> float(NAN) Reproduce code: --------------- var_dump( (float) "INF" ); # expected float(INF) var_dump( (float) "-INF" ); # expected float(-INF) var_dump( (float) "NAN" ); # expected float(NAN) Expected result: ---------------- float(INF) float(-INF) float(NAN) Actual result: -------------- float(0) float(-0) float(0) ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=48968&edit=1
