// Interesting example about if-elseif-else statement
$test = "STRING, NOT INTEGER OR FLOAT";
if ($test < 12) {
echo "child";
} else if ($test > 12 && $test < 18 ) {
echo "teen";
} else {
echo "adult";
}
// what do you think, what will be output, error or ?
// make that example on your PC if you are a begginer :)