why you bolded the ELSE, i dunno... there are more issues than that...
there is a semicolon after the condition after the ELSE IF, ELSE IF was spelled ESLE IF
this should fix it
<?php
$age = 17;
if (($age >= 18) && ($age <= 35))
{
echo "Youth message";
}
else if (($age >= 1) && ($age <= 17))
{
echo "You are a Young Person";
}
else
{
echo "You are on \"OLD PERSON\"";
}
?>