ID: 28711 Comment by: imprestavel at gameguru dot com dot br Reported By: sikachu at beezone dot net Status: Open Bug Type: Unknown/Other Function Operating System: Windows 2000 PHP Version: 5.0.0RC3 New Comment:
Tested with both (4.3.7 and 5RC3) with register_globals On and Off (on both) and they all had the same behavior Maybe its some weird thing between php and the server... Your 4.3.7 server is running IIS5, right? Maybe it only passes query string to cgi if its not empty... In that case, the only reason why your script works(while it shouldnt), is because IIS works how it shouldnt hehe Anyway, i think you should change isset to empty for cases like the one you described But lets wait for someone from the staff to reply... Previous Comments: ------------------------------------------------------------------------ [2004-06-10 17:48:52] sikachu at beezone dot net Well ... I used isset() with $QUERY_STRING to check the query all the time. Also, my server still PHP 4.3.7 and it's at http://ragnarok.beezone.net . On there, If you type in 'http://ragnarok.beezone.net', it will load itself because the isset($QUERY_STRING) is false! And if I type something like 'http://ragnarok.beezone.net/?board' That will trigger the code and redirect to the page we provide ! Can somebody test and confirm that just because my server use cgi (php.exe) instead of isapi module (php5isapi.dll)? Thanks anyway, imprestavel. I think if I change the script whole site to use empty(), it may works. But I sill confuse with this behavior. ------------------------------------------------------------------------ [2004-06-10 09:18:43] imprestavel at gameguru dot com dot br I think php4 does that too (just tested, but register_globals is off) Maybe you are confusing isset with empty "isset -- Determine whether a variable is set ... Returns TRUE if var exists; FALSE otherwise." "empty -- Determine whether a variable is empty ... empty() returns FALSE if var has a non-empty and non-zero value. In otherwords, "", 0, "0", NULL, FALSE, array(), var $var;, and objects with empty properties, are all considered empty. TRUE is returned if var is empty." You may find that information here: http://www.php.net/isset http://www.php.net/empty Hope it helps ------------------------------------------------------------------------ [2004-06-09 16:46:18] sikachu at beezone dot net Clearify the bug summary ... ------------------------------------------------------------------------ [2004-06-09 16:44:18] sikachu at beezone dot net Change the version number in topic from RC2 to RC3 ... ------------------------------------------------------------------------ [2004-06-09 16:42:41] sikachu at beezone dot net Description: ------------ I upgraded from PHP 4.3.4 to PHP 5.0 RC3 yesterday. When I tried to run the script that check for the query string and then refresh to the page, the query string return the invalid value. This behavior I found only in PHP 5.0 RC3 I'll show you the result with these thing: echo $QUERY_STRING; isset($QUERY_STRING); $QUERY_STRING == ""; For example, assume that the script URL is http://somewhere.com/index.php If I call it like this: http://somewhere.com/index.php?foo echo $QUERY_STRING; // show foo isset($QUERY_STRING); // return true $QUERY_STRING == ""; // return false But, here is the problem. If I call it like this: http://somewhere.com/index.php echo $QUERY_STRING; // show ""(nothing) isset($QUERY_STRING); // return true << unexpected $QUERY_STRING == ""; // return true The code that I use for test will be in the next section. My PHP configuration based on php.ini-dist. I changed register_global to be On, and then add php_mysql & php_mysqli extension to it. Reproduce code: --------------- if(isset($QUERY_STRING)) { echo "Your query string is defined\n"; } if($QUERY_STRING == "") { echo "Your query string is null\n"; } if($QUERY_STRING == " ") { echo "Your query string contain just a space\n"; } echo "Here is your query string: '".$QUERY_STRING."'"; Expected result: ---------------- Your query string is null Here is your query string: '' Actual result: -------------- Your query string is defined Your query string is null Here is your query string: '' ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=28711&edit=1
