PHP bug fixing - condition not working properly

Question

In the PHP code when put $result variable more than 100. Then output should be "Your result is invalid". But it's showing "You have passed". Why? Can anybody help me please?

Check code here - https://pasteboard.co/HZkC73C.png

Answer 1

Cause your variable has value greater than 33 and greater than 100 in the same time, and it goes only into first IF statement block. If you need second statement to be valid - switch IF and ELSE IF blocks.

Answer 2

<?php  
$result=130;  
if($result >=30 && $result <=100){
echo "You have  passed";
}
elseif ($result < 0 || $result >100) {
echo "Your result is invalid";
}
else {
echo "fail";
}
?>