Good day, Just to clarify, Perl will, in fact, complain if you have undefined variables (or variables that you use once) if you have warnings and/or strict mode in effect. Using at least one is strongly recommended.
In PHP, the method you're using for getting form data is deprecated. You should use $HTTP_POST_VARS or $_POST, depending on your version. Check the docco for more info on those. If you really have to check variables using this method, use isset() to see if the variables ... have been set. =) ============================ Darren Gamble Planner, Regional Services Shaw Cablesystems GP 630 - 3rd Avenue SW Calgary, Alberta, Canada T2P 4L4 (403) 781-4948 > -----Original Message----- > From: Crane, Christopher [mailto:[EMAIL PROTECTED]] > Sent: Thursday, May 30, 2002 3:07 PM > To: '[EMAIL PROTECTED]' > 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 -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
