Some statements (return
, break
, continue
, goto
, switch
) and throw
expressions move control flow out of the current code block. So any unlabeled statements that come after such a jump are unreachable, and either this
dead code should be removed, or the logic should be corrected.
Noncompliant code example
function fun($a) {
$i = 10;
return $i + $a;
$i++; // dead code
}
Compliant solution
function fun($a) {
$i = 10;
return $i + $a;
}