note 80254 added to language.types.boolean

Note that the symbolic constants TRUE and FALSE are treated differently. I was told that this is a feature, not a bug. echo false ; echo (false) ; echo false+false ; echo (false+false) ; echo intval(false) ; echo '"'.false.'"' ; echo true ; echo (true) ; echo true+true ; echo (true+true) ; echo intval(true) ; echo '"'.true.'"' ; should produce 00000"0"11221"1" but instead produces 000""11221"1" In other words, the only way to output the underlying zero or use it in a string is to use 'false+false' or pass it through intval(). No such tricks are required to get at the 1 that underlies true. The whole idea of symbolic constants is that the underlying value *always* replaces them during translation, and thus anywhere you would otherwise have to use some obscure "magic number" such as 191, you can use a symbolic constant that makes sense, such as TOTAL_NATIONS. Exactly what php gets out of breaking this rule was not explained to me. ---- Server IP: 209.41.74.194 Probable Submitter: 71.123.74.100 ---- Manual Page -- http://www.php.net/manual/en/language.types.boolean.php Edit -- https://master.php.net/note/edit/80254 Del: integrated -- https://master.php.net/note/delete/80254/integrated Del: useless -- https://master.php.net/note/delete/80254/useless Del: bad code -- https://master.php.net/note/delete/80254/bad+code Del: spam -- https://master.php.net/note/delete/80254/spam Del: non-english -- https://master.php.net/note/delete/80254/non-english Del: in docs -- https://master.php.net/note/delete/80254/in+docs Del: other reasons-- https://master.php.net/note/delete/80254 Reject -- https://master.php.net/note/reject/80254 Search -- https://master.php.net/manage/user-notes.php