note 123372 added to language.operators.string

Use of .= without first instantiating $var can cause issues in environments where WP_DEBUG is set to true and the $var is ultimately echoed into the page. Doing so results in a PHP Notice that gets included in the echo, potentially disrupting content flow. ---- Server IP: 208.43.231.9 Probable Submitter: 2601:241:8500:4333:75af:7a05:f61c:5dcc ---- Manual Page -- http://php.net/manual/en/language.operators.string.php Edit -- https://master.php.net/note/edit/123372 Del: integrated -- https://master.php.net/note/delete/123372/integrated Del: useless -- https://master.php.net/note/delete/123372/useless Del: bad code -- https://master.php.net/note/delete/123372/bad+code Del: spam -- https://master.php.net/note/delete/123372/spam Del: non-english -- https://master.php.net/note/delete/123372/non-english Del: in docs -- https://master.php.net/note/delete/123372/in+docs Del: other reasons-- https://master.php.net/note/delete/123372 Reject -- https://master.php.net/note/reject/123372 Search -- https://master.php.net/manage/user-notes.php