note 92666 added to language.types.null

As the documentation does not mention it and just in case you were wondering: <?php $a = null; $b = NULL; if(is_null($a)) echo 'is_null() is true where $a=null<br/>'; if($a===null) echo '$a IS EXACTLY null <br/>'; if($a===NULL) echo '$a IS EXACTLY NULL <br/>'; if(null === NULL) echo 'null === NULL<br/>'; if(null == NULL) echo 'null == NULL<br/>'; if($a === $b) echo '$a === $b<br/>'; if($a == $b) echo '$a == $b<br/>'; ?> as expected produces the following in 5.2.9. is_null() is true where $a=null IS EXACTLY null IS EXACTLY NULL null === NULL null == NULL $a === $b $a == $b Obvious really, but worth checking when you consider the potential issues. Also by the same type of test: true === TRUE and false === FALSE. ---- Server IP: 209.41.74.194 Probable Submitter: 80.3.156.124 ---- Manual Page -- http://www.php.net/manual/en/language.types.null.php Edit -- https://master.php.net/note/edit/92666 Del: integrated -- https://master.php.net/note/delete/92666/integrated Del: useless -- https://master.php.net/note/delete/92666/useless Del: bad code -- https://master.php.net/note/delete/92666/bad+code Del: spam -- https://master.php.net/note/delete/92666/spam Del: non-english -- https://master.php.net/note/delete/92666/non-english Del: in docs -- https://master.php.net/note/delete/92666/in+docs Del: other reasons-- https://master.php.net/note/delete/92666 Reject -- https://master.php.net/note/reject/92666 Search -- https://master.php.net/manage/user-notes.php