note 121101 added to language.operators

Hi, guys! Does anyone can explain to me what does this line does? $id == NULL || $this->data['user'] = $this->user_m->get($id); ---- Server IP: 72.52.91.14 Probable Submitter: 168.227.9.64 ---- Manual Page -- http://php.net/manual/en/language.operators.php Edit -- https://master.php.net/note/edit/121101 Del: integrated -- https://master.php.net/note/delete/121101/integrated Del: useless -- https://master.php.net/note/delete/121101/useless Del: bad code -- https://master.php.net/note/delete/121101/bad+code Del: spam -- https://master.php.net/note/delete/121101/spam Del: non-english -- https://master.php.net/note/delete/121101/non-english Del: in docs -- https://master.php.net/note/delete/121101/in+docs Del: other reasons-- https://master.php.net/note/delete/121101 Reject -- https://master.php.net/note/reject/121101 Search -- https://master.php.net/manage/user-notes.php