note 59477 added to function.mysql-errno

Watch out! Although mysql_errno() supposedly returns the error number from the last MySQL function, if you don't specify a link identifier, it assumes the last link *opened*, NOT the last link *used*. That means you can actually have mysql_errno() blindly ignore the error caused by the last MySQL function if it didn't use the last opened link. Here's an example: $link1 = mysql_connect('localhost', 'user1', 'password1'); $link2 = mysql_connect('localhost', 'user2', 'password2'); // do something wrong using the first link mysql_select_db('nonexistentdb', $link1); // if you don't specify the link identifier ... if (mysql_errno()) { // the error from the last MySQL function is not reported echo mysql_errno() . ': ' . mysql_error() . "\n"; } ---- Manual Page -- http://www.php.net/manual/en/function.mysql-errno.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+59477 Delete: added to the manual -- http://master.php.net/manage/user-notes.php?action=delete+59477&report=yes&reason=added+to+the+manual Delete: bad code -- http://master.php.net/manage/user-notes.php?action=delete+59477&report=yes&reason=bad+code Delete: spam -- http://master.php.net/manage/user-notes.php?action=delete+59477&report=yes&reason=spam Delete: useless -- http://master.php.net/manage/user-notes.php?action=delete+59477&report=yes&reason=useless Delete: non-english -- http://master.php.net/manage/user-notes.php?action=delete+59477&report=yes&reason=non-english Delete: already in docs -- http://master.php.net/manage/user-notes.php?action=delete+59477&report=yes&reason=already+in+docs Delete: other reasons -- http://master.php.net/manage/user-notes.php?action=delete+59477&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+59477&report=yes Search -- http://master.php.net/manage/user-notes.php