Problem with PHP Forms

[!const]

I have a concern for PHP. I'm trying to code a test system, or survey, but it does not work. It returns me directly to the result, knowing that $result is $ q2 ... I do not understand this.. Could you enlighten me on this? Here is the code:

<? php 
if (isset ($ _POST [ 'q1'])){ 
$ q1 = $ _POST [ 'q1']; 
}
if (isset ($ _POST [ 'q2'])){ 
$ q2 = $ _POST [ 'q2']; 
}
if (isset ($ _POST [ 'q3'])){ 
$ q3 = $ _POST [ 'q3']; 
}
if (isset ($ _POST [ 'q4'])){ 
$ q4 = $ _POST [ 'q4']; 
}
if (isset ($ _POST [ 'q5'])){ 
$ q5 = $ _POST [ 'q5']; 
}
if ($ q1 == "" & & $ q2 == "" & & $ q3 == "" & & $ q4 == "" & & $ q5 == "") {
echo ' 
<form action="tests.php" method="post"> 
<input type="radio" name="q1" value="1"> Yes <br/> 
<input type="radio" name="q1" value="3"> No <br/> 
<input type="radio" name="q1" value="5"> No opinion <br/> 
<input type="submit" value="Valid"> 
</form> '; 
} 
else if ($ q1! = "") {
echo ' 
<form action="tests.php" method="post"> 
<input type="radio" name="q2" value="1"> Yes <br/> 
<input type="radio" name="q2" value="3"> No <br/> 
<input type="radio" name="q2" value="5"> No opinion <br/> 
<input type="submit" value="Valid"> 
</form> '; 
}
else if ($ q1! = "" & & $ q2! = "") {
echo ' 
<form action="tests.php" method="post"> 
<input type="radio" name="q3" value="1"> Yes <br/> 
<input type="radio" name="q3" value="3"> No <br/> 
<input type="radio" name="q3" value="5"> No opinion <br/> 
<input type="submit" value="Valid"> 
</form> '; 
}
else if ($ q1! = "" & & $ q2! = "" & & $ q3! = "") {
echo ' 
<form action="tests.php" method="post"> 
<input type="radio" name="q4" value="1"> Yes <br/> 
<input type="radio" name="q4" value="3"> No <br/> 
<input type="radio" name="q4" value="5"> No opinion <br/> 
<input type="submit" value="Valid"> 
</form> '; 
} 
else if ($ q1! = "" & & $ q2! = "" & & $ q3! = "" & & $ q4! = "") {
echo ' 
<form action="tests.php" method="post"> 
<input type="radio" name="q5" value="1"> Yes <br/> 
<input type="radio" name="q5" value="3"> No <br/> 
<input type="radio" name="q5" value="5"> No opinion <br/> 
<input type="submit" value="Valid"> 
</form> '; 
}
else {
$result = $q1 + $q2 + $q3 + $q4 + $q5; 
echo $result; 
}
>

[XSI]

1. a more explicit please
2. You Do not initialized your variables. A small error_reporting = E_ALL | E_STRICT in php.ini you do the most good.

[switchblade327]

On one page to another you do not retransmit the responses of old forms. $q1 and $q2, therefore can not exist simultaneously.

$ q1! = "" & & $ q2! = ""

and other kinds of tests are always equal to 'false'.

[!const]

Thank you I'm not good on this one. Wow it works!