php实现的美国50个州选择列表实例

<select name="state" id="state">
  <option value="al" <?php if($state=="al") echo "selected";?>>alabama</option>
  <option value="ak" <?php if($state=="ak") echo "selected";?>>alaska</option>
  <option value="az" <?php if($state=="az") echo "selected";?>>arizona</option>
  <option value="ar" <?php if($state=="ar") echo "selected";?>>arkansas</option>
  <option value="ca" <?php if($state=="ca") echo "selected";?>>california</option>
  <option value="co" <?php if($state=="co") echo "selected";?>>colorado</option>
  <option value="ct" <?php if($state=="ct") echo "selected";?>>connecticut</option>
  <option value="de" <?php if($state=="de") echo "selected";?>>delaware</option>
  <option value="dc" <?php if($state=="dc") echo "selected";?>>district of columbia</option>
  <option value="fl" <?php if($state=="fl") echo "selected";?>>florida</option>
  <option value="ga" <?php if($state=="ga") echo "selected";?>>georgia</option>
  <option value="hi" <?php if($state=="hi") echo "selected";?>>hawaii</option>
  <option value="id" <?php if($state=="id") echo "selected";?>>idaho</option>
  <option value="il" <?php if($state=="il") echo "selected";?>>illinois</option>
  <option value="in" <?php if($state=="in") echo "selected";?>>indiana</option>
  <option value="ia" <?php if($state=="ia") echo "selected";?>>iowa</option>
  <option value="ks" <?php if($state=="ks") echo "selected";?>>kansas</option>
  <option value="ky" <?php if($state=="ky") echo "selected";?>>kentucky</option>
  <option value="la" <?php if($state=="la") echo "selected";?>>louisiana</option>
  <option value="me" <?php if($state=="me") echo "selected";?>>maine</option>
  <option value="md" <?php if($state=="md") echo "selected";?>>maryland</option>
  <option value="ma" <?php if($state=="ma") echo "selected";?>>massachusetts</option>
  <option value="mi" <?php if($state=="mi") echo "selected";?>>michigan</option>
  <option value="mn" <?php if($state=="mn") echo "selected";?>>minnesota</option>
  <option value="ms" <?php if($state=="ms") echo "selected";?>>mississippi</option>
  <option value="mo" <?php if($state=="mo") echo "selected";?>>missouri</option>
  <option value="mt" <?php if($state=="mt") echo "selected";?>>montana</option>
  <option value="ne" <?php if($state=="ne") echo "selected";?>>nebraska</option>
  <option value="nv" <?php if($state=="nv") echo "selected";?>>nevada</option>
  <option value="nh" <?php if($state=="nh") echo "selected";?>>new hampshire</option>
  <option value="nj" <?php if($state=="nj") echo "selected";?>>new jersey</option>
  <option value="nm" <?php if($state=="nm") echo "selected";?>>new mexico</option>
  <option value="ny" <?php if($state=="ny") echo "selected";?>>new york</option>
  <option value="nc" <?php if($state=="nc") echo "selected";?>>north carolina</option>
  <option value="nd" <?php if($state=="nd") echo "selected";?>>north dakota</option>
  <option value="oh" <?php if($state=="oh") echo "selected";?>>ohio</option>
  <option value="ok" <?php if($state=="ok") echo "selected";?>>oklahoma</option>
  <option value="or" <?php if($state=="or") echo "selected";?>>oregon</option>
  <option value="pa" <?php if($state=="pa") echo "selected";?>>pennsylvania</option>
  <option value="ri" <?php if($state=="ri") echo "selected";?>>rhode island</option>
  <option value="sc" <?php if($state=="sc") echo "selected";?>>south carolina</option>
  <option value="sd" <?php if($state=="sd") echo "selected";?>>south dakota</option>
  <option value="tn" <?php if($state=="tn") echo "selected";?>>tennessee</option>
  <option value="tx" <?php if($state=="tx") echo "selected";?>>texas</option>
  <option value="ut" <?php if($state=="ut") echo "selected";?>>utah</option>
  <option value="vt" <?php if($state=="vt") echo "selected";?>>vermont</option>
  <option value="va" <?php if($state=="va") echo "selected";?>>virginia</option>
  <option value="wa" <?php if($state=="wa") echo "selected";?>>washington</option>
  <option value="wv" <?php if($state=="wv") echo "selected";?>>west virginia</option>
  <option value="wi" <?php if($state=="wi") echo "selected";?>>wisconsin</option>
  <option value="wy" <?php if($state=="wy") echo "selected";?>>wyoming</option>
</select>