Using if(isset()) with $_GET and switch and default

Hi, I'm still new to PHP and everyday I learn something new. Today I was trying to make some script using the switch statement but I have some issue that I don't know how to get around it. It's a simple test script that contain only one file, it has some questions that I want only one question appear per time then go to the next question when clicking on the submit button, I used switch for that, but when I get the first page, I got a notice which says: Notice: Undefined index: question in path\test.php on line 56 So I used if(isset($_GET[''])) but then the default value of the switch does not show up in the first page and I get the first page blank. 1- Is there anyway that I can use the default value of the switch without getting the note? Or 2- Is there anyway that I can use the default value of the switch with the if(isset()) and show the first page? Here is the content of the script that I hope you can help me with: (please note that it's not finished yet and it's so simple) (The if(isset()) is commented) ================================================ <?php // List of test questions and their answers in variables $question1 = '1- What is PHP?<br /> <input type="radio" name="q1a" value="a" /> A- Software <br /> <input type="radio" name="q1a" value="b" /> B- Hypertext Preprocessor, Scripting Server side programming language <br /> <input type="radio" name="q1a" value="c" /> C- Client side programming language <br /><br /> <input type="submit" name="sumbit" value="Question 2" />'; $answer1 = 'b'; $question2 = '2- What is PHP used for?<br /> <input type="radio" name="q2a" value="a" /> A- For web <br /> <input type="radio" name="q2a" value="b" /> B- For Computers <br /> <input type="radio" name="q2a" value="c" /> C- For Designing <br /><br /> <input type="submit" name="sumbit" value="Question 3" />'; $answer2 = 'a'; $question3 = '3- What is good about PHP?<br /> <input type="checkbox" name="q3a[a]" value="a" /> A- It\'s Designed and created for the web <br /> <input type="checkbox" name="q3a[b]" value="b" /> B- It\'s Free <br /> <input type="checkbox" name="q3a[c]" value="c" /> C- It supports different Databases <br /> <input type="checkbox" name="q3a[d]" value="d" /> D- It\'s not an Oriented Programming language <br /><br /> <input type="submit" name="sumbit" value="Question 4" />'; $answer3_1 = 'a'; $answer3_2 = 'b'; $answer3_3 = 'c'; $question4 = '4- What does PHP stands for?<br /> <input type="radio" name="q4a" value="a" /> A- Perl Hypertext Programming <br /> <input type="radio" name="q4a" value="b" /> B- Personal Home Page <br /><br /> <input type="submit" name="sumbit" value="Question 5" />'; $answer4 = 'b'; $question5 = '5- Who created PHP?<br /> <input type="radio" name="q5a" value="a" /> A- Andi Gutmans <br /> <input type="radio" name="q5a" value="b" /> B- Zeev Suraski <br /> <input type="radio" name="q5a" value="c" /> C- Rasmus Lerdorf <br /><br /> <input type="submit" name="sumbit" value="Results" />'; $answer5 = 'c'; ?> <html> <head> <title> <?php if(isset($_GET['question'])) { echo "Question " . $_GET['question']; } else { echo 'Instroctions'; } ?> </title> </head> <body> <?php //if(isset($_GET['question'])) { switch($_GET['question']) { case '1': echo '<form action="test.php?question=2" method="post">' . $question1 .'</form>'; break; case '2': echo '<form action="test.php?question=3" method="post">' . $question2 .'</form>'; break; case '3': echo '<form action="test.php?question=4" method="post">' . $question3 .'</form>'; break; case '4': echo '<form action="test.php?question=5" method="post">' . $question4 .'</form>'; break; case '5': echo '<form action="test.php?question=Results" method="post">' . $question5 .'</form>'; break; case 'Results': echo 'You results are: <br /><br /><a href="test.php">Go to the home page and do the test again!</a>'; break; default: echo 'Welcome to PHP simple test, Please click on Start button to begin you test. <br /> <a href="test.php?question=1">Click Here to Begin!</a>'; break; } //} ?> </body> </html> ================================================ Thanks for your help guys! ^^ MuFei