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Chapter 11. Control Structures |
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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";
}
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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).
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