From:             [EMAIL PROTECTED]
Operating system: linux
PHP version:      4.3.0RC3
PHP Bug Type:     Output Control
Bug description:  notice leaks output when display_errors is off

If a script generates a php notice (which is logged, not displayed to the
screen) something gets output anyway; this output can prevent setting
cookies. 
<?
         if (!$undefinedVariable) {
                 if (setcookie ("code","123456")) {
                         print "Cookie set";
                 } else {
                         print "Could not set cookie";
                 }
         }
?>

We get the following in the server log:

PHP Notice:  Undefined variable:  undefinedVariable in
/home/www/dev/pLogin.php on line 2
PHP Warning:  Cannot modify header information - headers already sent in
/home/www/dev/pLogin.php on line 3

However, if you add the line

   $undefinedVariable = false;

so that the notice goes away, PHP will happily set the cookie.
display_errors = off, error_reporting = E_ALL, log_errors = On.

Note: This happens on 4.3.0RC2; unfortunately, I could not test on RC3.
-- 
Edit bug report at http://bugs.php.net/?id=21046&edit=1
-- 
Try a CVS snapshot:         http://bugs.php.net/fix.php?id=21046&r=trysnapshot
Fixed in CVS:               http://bugs.php.net/fix.php?id=21046&r=fixedcvs
Fixed in release:           http://bugs.php.net/fix.php?id=21046&r=alreadyfixed
Need backtrace:             http://bugs.php.net/fix.php?id=21046&r=needtrace
Try newer version:          http://bugs.php.net/fix.php?id=21046&r=oldversion
Not developer issue:        http://bugs.php.net/fix.php?id=21046&r=support
Expected behavior:          http://bugs.php.net/fix.php?id=21046&r=notwrong
Not enough info:            http://bugs.php.net/fix.php?id=21046&r=notenoughinfo
Submitted twice:            http://bugs.php.net/fix.php?id=21046&r=submittedtwice
register_globals:           http://bugs.php.net/fix.php?id=21046&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=21046&r=php3
Daylight Savings:           http://bugs.php.net/fix.php?id=21046&r=dst
IIS Stability:              http://bugs.php.net/fix.php?id=21046&r=isapi

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