#50372 [Asn->Csd]: Ternary statements are not identical

ID: 50372 Updated by: rquadling@php.net Reported By: jakeophobia at gmail dot com -Status: Assigned +Status: Closed Bug Type: Documentation problem PHP Version: Irrelevant Assigned To: rquadling New Comment: This bug has been fixed in the documentation's XML sources. Since the online and downloadable versions of the documentation need some time to get updated, we would like to ask you to be a bit patient. Thank you for the report, and for helping us make our documentation better. Previous Comments: ------------------------------------------------------------------------ [2009-12-04 09:19:37] svn@php.net Automatic comment from SVN on behalf of rquadling Revision: http://svn.php.net/viewvc/?view=revision&revision=291695 Log: Make examples consistent. Fix #50372 ------------------------------------------------------------------------ [2009-12-04 09:18:41] rquadling@php.net Aha! I see. Actually, false / 'false' could be anything. echo (true?'true':99?'t':'f'); echo (true?'true':foo?'t':'f'); echo (true?'true':null?'t':'f'); echo (true?'true':false?'t':'f'); echo (true?'true':'false'?'t':'f'); all output 't' as the result do to the left-to-right evaluation. ------------------------------------------------------------------------ [2009-12-03 21:25:25] jakeophobia at gmail dot com Oops, I meant single quotes. Take a look at false vs. 'false' ------------------------------------------------------------------------ [2009-12-03 12:52:42] rquadling@php.net The () in the second version are redundant and are only there to emphasize the left-to-right expression evaluation. The output of both versions is the same, 't'. ------------------------------------------------------------------------ [2009-12-03 12:13:15] jakeophobia at gmail dot com Description: ------------ On page: http://www.php.net/manual/en/language.operators.comparison.php In 'Example #3 Non-obvious Ternary Behaviour' The two statements are not 'identical'. The second ternary statment has parenthesis on 'false' Expected result: ---------------- ... echo (true?'true':false?'t':'f'); ...the following is a more obvious version of the same code as above... echo ((true ? 'true' : false) ? 't' : 'f'); ... Actual result: -------------- ... echo (true?'true':false?'t':'f'); ...the following is a more obvious version of the same code as above... echo ((true ? 'true' : 'false') ? 't' : 'f'); ... ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=50372&edit=1