continue

while (list($key,$value) = each($arr)) {
     if ($key % 2) { // salta los miembros impares
         continue;
     }
     do_something_odd ($value);
 }
$i = 0;
while ($i++ < 5) {
    echo "Outer<br>\n";
    while (1) {
        echo "  Middle<br>\n";
        while (1) {
            echo "  Inner<br>\n";
            continue 3;
        }
        echo "This never gets output.<br>\n";
    }
    echo "Neither does this.<br>\n";
}