Как на этом люди пишут?

$a = 1;
print ($a == "" ? "yes" : "no") . "\n";
print ($a == "1" ? "yes" : "no") . "\n";
print ($a == "01" ? "yes" : "no") . "\n";
$a = 0;
print ($a == "" ? "yes" : "no") . "\n";
print ($a == "0" ? "yes" : "no") . "\n";

———

no
yes
yes
yes
yes


Originally published at U.F.M's Homepage. You can comment here or there.