note 75080 added to function.define

Take a look at the following code: <? define('SOME_FUNC', myfunc()); define('MAXVAL', 10); class Foo { private $test; function set() { $this->test( myfunc ); } } function myfunc() { return 'some text'; } function otherfunc() { echo rand(0, MAXVAL); } $c=new Foo(); $c->set(); otherfunc(); ?> This will break constants and cause weird, unpredictable behaviour. Foo::$test variable will be set properly with 'some text', but if you try to use numeric constants like MAXVAL outside the class, in this case in otherfunc() PHP won't find this constant. If you use defined('MAXVAL') in otherfunc() it will tell you it's defined, but it won't work if you use this constant within the function. So be warned, and avoid using functions as constant parameters, because it's probably PHP bug and can cause serious disruption in your program. It's interesting to notice that string type constants won't have this problem, it's related only to constants with numeric values. ---- Server IP: 195.136.184.34 Probable Submitter: 85.219.142.101 ---- Manual Page -- http://www.php.net/manual/en/function.define.php Edit -- https://master.php.net/note/edit/75080 Del: integrated -- https://master.php.net/note/delete/75080/integrated Del: useless -- https://master.php.net/note/delete/75080/useless Del: bad code -- https://master.php.net/note/delete/75080/bad+code Del: spam -- https://master.php.net/note/delete/75080/spam Del: non-english -- https://master.php.net/note/delete/75080/non-english Del: in docs -- https://master.php.net/note/delete/75080/in+docs Del: other reasons-- https://master.php.net/note/delete/75080 Reject -- https://master.php.net/note/reject/75080 Search -- https://master.php.net/manage/user-notes.php