note 69732 added to language.references.pass

There is actually a not-so-clean way to have default values for reference arguments <?php function hello( &$arg ) { if( ! isset( $arg ) ) $arg = "A default value\n"; print $arg; } @hello(); hello( $var = "some value\n" ); ?> This would normally issue a Missing argument Warning, but if you disable warnings or use @, it doesn't bother. Unlike one could expect, isset( $arg ) doesn't really check if the argument is set, but it checks if the calling variable in the caller scope is set. The code will output: A default value some value ---- Server IP: 201.216.232.3 Probable Submitter: 200.114.166.165 ---- Manual Page -- http://www.php.net/manual/en/language.references.pass.php Edit -- https://master.php.net/note/edit/69732 Del: integrated -- https://master.php.net/note/delete/69732/integrated Del: useless -- https://master.php.net/note/delete/69732/useless Del: bad code -- https://master.php.net/note/delete/69732/bad+code Del: spam -- https://master.php.net/note/delete/69732/spam Del: non-english -- https://master.php.net/note/delete/69732/non-english Del: in docs -- https://master.php.net/note/delete/69732/in+docs Del: other reasons-- https://master.php.net/note/delete/69732 Reject -- https://master.php.net/note/reject/69732 Search -- https://master.php.net/manage/user-notes.php