note 85773 added to control-structures.foreach

If you use foreach with references, don't forget to unset the reference if you are not sure that a later piece of code doesn't use the same variable name. Example: $latest_tutorials = $db->queryAll("select * from tutorials"...); foreach ($latest_tutorials as &$tut) $tut["comments"] = $db->queryOne("select count(*) ..."); // ... $tut = $db->queryRow("..."); print_tutorials($latest_tutorials); print_tutorial($tut); Here the last entry of latest_tutorials will be replaced by the row that is fetched by the $tut = $db->queryRow("..."); line because $tut is still referencing the last array entry. Solution: foreach ($latest_tutorials as &$tut) $tut["comments"] = $db->queryOne("select count(*) ..."); unset($tut); // ... $tut = $db->queryRow("..."); ---- Server IP: 212.124.37.9 Probable Submitter: 85.127.212.165 ---- Manual Page -- http://www.php.net/manual/en/control-structures.foreach.php Edit -- https://master.php.net/note/edit/85773 Del: integrated -- https://master.php.net/note/delete/85773/integrated Del: useless -- https://master.php.net/note/delete/85773/useless Del: bad code -- https://master.php.net/note/delete/85773/bad+code Del: spam -- https://master.php.net/note/delete/85773/spam Del: non-english -- https://master.php.net/note/delete/85773/non-english Del: in docs -- https://master.php.net/note/delete/85773/in+docs Del: other reasons-- https://master.php.net/note/delete/85773 Reject -- https://master.php.net/note/reject/85773 Search -- https://master.php.net/manage/user-notes.php