ELSE

Often you'd want to execute a statement if a certain condition is met, and a different statement if the condition is not met. This is what ELSE is for. ELSE extends an IF statement to execute a statement in case the expression in the IF statement evaluates to FALSE. For example, the following code would display 'a is bigger than b' if $a is bigger than $b, and 'a is NOT bigger than b' otherwise:

if ($a>$b) {
    print "a is bigger than b";
} else {
    print "a is NOT bigger than b";
}