note 59936 deleted from language.constants by cmb

Note Submitter: anj at aps dot anl dot gov ---- 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.