note 42643 added to ref.session

This drove me crazy for a long time trying to figure out why my $_SESSION vars were changing (seemingly by themselves). I finally realized that assigning a value to a regular variable with the same name as a session variable will overwrite the session variable. $_SESSION['testing'] = "test@foo.com"; $testing = "test@bar.com"; echo $_SESSION['testing']; // will output test@bar.com another example: $_SESSION['email_address'] = "test@foobar.com"; // mysql query here... while($row = mysql_fetch_assoc($result)) { stripslashes(extract($row)); } /* If there is a column named email_address in the mysql result, $_SESSION['email_address'] will change with every iteration of the while loop. */ I had mistakenly thought that _SESSION variables did not interfere/conflict with regular variables. ---- Manual Page -- http://www.php.net/manual/en/ref.session.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+42643 Delete -- http://master.php.net/manage/user-notes.php?action=delete+42643&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+42643&report=yes Search -- http://master.php.net/manage/user-notes.php