RE: [PHP] Undefined variables

You could try using isset first. I'm not sure where your log is, but if you check to see if task is set, then maybe that will eliminate the problem :-) -Natalie http://www.php.net/manual/en/function.isset.php -----Original Message----- From: Crane, Christopher [mailto:CCrane@IKON.com] Sent: Thursday, May 30, 2002 5:07 PM To: 'php-general@lists.php.net' Subject: [PHP] Undefined variables I have an annoying problem, that I know is my own ignorance to PHP. I came from PERL and this was not a problem there but is with PHP. Here's the issue. I have a number of scripts that use a "index.php?Task='some sort of task name'", for example, http://www.foo.com/index.php?Task=ShowVersion <http://www.foo.com/index.php?Task=ShowVersion> . Then I use an if/else statement to tell the script what to do if it sees the ShowVersion variable. In the ShowVersion example, I would call a function that displays the version information I defined in the script. As a back up, I always provide an else statement to catch variables I have no functions for. If I have a ShowVersion function, GetData function and a CreateImage function and the Task variable is empty or a variable that does not exists comes in like http://www.foo.com/index.php?Task=SomethingDumb <http://www.foo.com/index.php?Task=SomethingDumb> it would go to the default function of something by using the ELSE part of the if/else statements. I hope I am describing this correctly.....now here is the problem. If I have warnings turned on, or if I have a log written for warnings, the log fills up if someone goes to http://www.foo.com/index.php <http://www.foo.com/index.php> or http://www.foo.com <http://www.foo.com> will error messages like undefine variable TASK on line 255. I understand the reason, that PHP was expecting the variable Task when it got to the if/else statements. So I put in something like if(!($Task)) { function Something(); } but it still is looking for the variable so it still errors. In Perl, it would simply be ignored. What do I do here. Here is a simple example of the code. if ($Task == "ShowVersion") { function ShowVersion(); } elseif ($Task == "GetData") { function GetData(); print "$DataOutput"; } elseif ($Task == "CreateImage") { function CreateImage(); } else { print "Incorrect Variable or no Variable Supplies<br>"; } Christopher J. Crane Network Operations Manager IKON Office Solutions 860.659.6464