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<? # http://..../intro03.php # http://..../intro03.php?v1=5&v2=10 # http://..../intro03.php?v1=8 if (empty($v1) or $v1 < 1) { $v1 = 2; } if (empty($v2) or $v2 < 1) { $v2 = 3; } if ($v1 == 5) { echo "v1 equal five"; } else { echo "v1 not equal five"; } echo "<hr>"; # ===== if ($v1 == 8) { echo "v1 equal eight"; } else { if ($v1 == 2) { echo "v1 equal two"; } else { echo "v1 not equal eight and two"; } } echo "<hr>"; # ===== if ($v2 == 3) { echo "v2 equal three"; } elseif ($v2 == 10) { echo "v2 equal ten"; } elseif ($v2 == 6) { echo "v2 equal six"; } else { echo "v2 not equal three and ten and six"; } ?> |