note 59936 added to language.constants

It is possible to define constants that have the same name as a built-in PHP keyword, although subsequent attempts to actually use these constants will cause a parse error. For example in PHP 5.1.1, this code <?php define("PUBLIC", "Hello, world!"); echo PUBLIC; ?> gives the error Parse error: syntax error, unexpected T_PUBLIC in test.php on line 3 This is a problem to be aware of when converting PHP4 applications to PHP5, since that release introduced several new keywords that used to be legal names for constants. ---- Manual Page -- http://www.php.net/manual/en/language.constants.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+59936 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+59936&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+59936&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+59936&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+59936&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+59936&report=yes&reason=non-english Delete: already in docs -- http://master.php.net/manage/user-notes.php?action=delete+59936&report=yes&reason=already+in+docs Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+59936&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+59936&report=yes Search -- http://master.php.net/manage/user-notes.php