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:
The
else statement is only executed if the
if expression evaluated to
FALSE, and if there were any
elseif expressions - only if they evaluated to
FALSE as well (see
elseif).