#21569 [Com]: PHP can't set cookies after a test with an unset variable

ID: 21569 Comment by: ElfQrin@ElfQrin.com Reported By: ElfQrin@ElfQrin.com Status: Bogus Bug Type: Unknown/Other Function Operating System: Windows 2000 only PHP Version: 4.3.0 New Comment: Why does it affect only Windows 2000, while the very same PHP version with the same php.ini file works fine on Windows 98 ? And it works fine on Linux too? To make it clearer, the "workarounds" are needed only if the scripts run under Windows 2000, so that the example script returns "1" on Windows 2000 and "3" on Windows 98 or Linux. Previous Comments: ------------------------------------------------------------------------ [2003-01-13 16:37:48] sniper@php.net There's really no bug here. You're getting a notice about unitialized variable which causes the rest of the headers not to get send. Try adding 'error_reporting(0);' in the beginning of your script.. ------------------------------------------------------------------------ [2003-01-13 10:48:18] ElfQrin@ElfQrin.com Workaround #2: At the beginning og your script, "declare" any possibly unset variable that will be invoked: if (!isset($test)) {$test="";} ------------------------------------------------------------------------ [2003-01-13 10:07:12] ElfQrin@ElfQrin.com Workaround (which doesn't mean this bug shouldn't be fixed): To perform tests: if (!isset($test) || $test=="") { echo ""; } To set a variable: $a=""; if (isset($test)) { $a=$test; } ------------------------------------------------------------------------ [2003-01-13 10:05:53] ElfQrin@ElfQrin.com I've found out that the problem is not limited to tests. It happens every time you invoke an unset variable before than setting a cookie. In the previous example, try $a = $test; instead of if ($test=="") { echo ""; } and the setcookie won't work as well. ------------------------------------------------------------------------ [2003-01-13 10:03:29] ElfQrin@ElfQrin.com This is a shortest example: <? # $test=""; setcookie("debug","1",0,"",""); if ($test=="") { echo ""; } setcookie("debug","3",0,"",""); echo "Cookie: [".$_COOKIE["debug"]."] (HIT RELOAD)<BR>"; ?> ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/21569 -- Edit this bug report at http://bugs.php.net/?id=21569&edit=1